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HomeMy WebLinkAboutPDS-054-21Clarington
Staff Report
If this information is required in an alternate accessible format, please contact the Accessibility
Coordinator at 905-623-3379 ext. 2131.
Report To: Joint Committees
Date of Meeting: October 25, 2021 Report Number: PDS-054-21
Submitted By: Ryan Windle, Director of Planning and Development Services Andrew
Reviewed By: C. Allison, CAO By-law Number: PLN15.18
File Number: Resolution#: JC-054-21
Report Subject: Lake Ontario Shoreline Management Plan Update
Recommendation:
1. That Report PDS-054-21 be received for information.
Municipality of Clarington
Report PDS-054-21
Report Overview
Page 2
The purpose of this report is to inform Council of the completion of an update to the Lake
Ontario Shoreline Management Plan for the Lower Trent Region, Ganaraska Region and
Central Lake Ontario Conservation Authority shoreline areas, review the findings and
recommendations for Clarington, and outline proposed next steps for implementation of the
Plan.
1. Background
1.1 In 1990, the Central Lake Ontario (CLOCA), Lower Trent Region (LTRCA) and
Ganaraska Region (GRCA) Conservation Authorities completed a shoreline
management plan for the Lake Ontario shoreline within their respective jurisdictions.
The Lake Ontario Shoreline Management Plan (Sandwell Swan Wooster Inc.,
December 1990) provided shoreline management direction, including defining flood and
erosion limits, identifying concentrations of natural hazards in conflict with existing
development ("Damage Centres"), and identifying land use considerations.
1.2 In 2017, an update of this Plan was jointly initiated by the three Conservation
Authorities, with funding support from the National Disaster Mitigation Program and the
affected municipalities (locally from Durham Region), with the Municipality providing in -
kind support. The update provided an opportunity to account for physical shoreline
changes that have occurred since completion of the original Plan, changing lake
conditions as a result of new water level planning, climate change forecasting, and
technological advances that contribute to improved data collection and modelling.
1.3 The objective of the renewed Lake Ontario Shoreline Management Plan (Zuzek Inc.,
Nov. 2020) (Plan) is to provide updated information and mapping of coastal hazards and
to increase the resilience of coastal communities by providing information and direction
for mitigating risk. The conceptual management approaches recommended in the Plan
include a hierarchy of four approaches: Avoid, Accommodate, Protect and Retreat.
1.4 The Plan area covers a shoreline length of approximately 135 kilometers from Ajax to
Carrying Place (Quinte West), including the entirety of Clarington's Lake Ontario
shoreline area (approximately 35 kilometers). It further sub -divides the Plan area into
12 reaches, delineated based on sediment transport, sediment deposition and physical
barrier (e.g. headlands and jetties) information and observations.
1.5 A Notice of Study commencement was released for the project in October 2018. Staff
from Planning & Development Services and Public Works participated in a Steering
Committee of municipal, provincial, federal, and Conservation Authority staff, receiving
information and presentations throughout the project and providing input. Staff attended
Municipality of Clarington Page 3
Report PDS-054-21
Council and Public Information Sessions held in November 2019 and provided
comments on the Draft Plan released in June 2020.
1.6 The Plan contains information to assist the Conservation Authorities, municipalities, and
shoreline property owners within the Plan area, including:
• Shoreline photo inventories (2018 and 2019);
• A breakdown of shoreline structure types presents along the shoreline and their
current condition;
• Updated flood, erosion and dynamic beach hazard limits and hazard maps; and
• A reach -by -reach summary of conditions, threats, and recommendations.
1.7 The Plan defines hazards for the purposes of managing development along the
shoreline to minimize / avoid future property damage and risk to life. It does not
comment on or provide direction regarding the management of Lake Ontario outflows,
as this is within the jurisdiction of the International Joint Commission.
1.8 The completed Plan and hazard mapping is available to the public on both the CLOCA
website (https://www.cloca.com/lake-ontario-shoreline-hazard-manag) and GRCA
website (https://www.grca.on.ca/programs-management/). An overall summary of the
Plan is provided in CLOCA Board report SR5723-21. The Plan was endorsed by the
CLOCA and GRCA Boards earlier this year.
2. Planning Policy Framework
2.1 The Provincial Policy Statement, 2020 (PPS) sets out the policy foundation for
regulating the development and use of land in Ontario. Section 3.1 deals with the
protection of public health and safety relating to natural hazards and requires that
development be directed to areas outside of hazardous shoreline lands which are
impacted by flooding, erosion and/or dynamic beach hazards. Section 3.1.2 of the PPS
sets out specific prohibitions for development and site alteration in the dynamic beach
hazard and areas where safe access cannot be maintained as a result of present
natural hazards. In addition, Section 3.1.3 of the PPS requires that "Planning
Authorities shall prepare for the impacts of a changing climate that may increase the risk
associated with natural hazards."
2.2 A Place to Grow: Growth Plan for the Greater Golden Horseshoe, 2020 (Growth Plan)
provides a framework for implementation of the PPS in the region. In implementing the
PPS, the Growth Plan requires that growth management planning direct development
away from hazardous lands (Policy 2.2.1 e)).
Municipality of Clarington Page 4
Report PDS-054-21
2.3 The Durham Region Official Plan (DROP) designates the majority of Clarington's
shoreline as "Waterfront Areas." Lands in the "Waterfront Areas" designation are to be
developed as people -places, except for significant natural areas, which are to be
protected in their natural states. The DROP recognizes development areas adjacent to
the shoreline in Newcastle, Wilmot Creek and Port Darlington east of Bowmanville
Creek as designated Living Areas. Notwithstanding, environment policies contained in
Section 2 conform with the policy direction set out by the PPS, prohibiting development
and site alteration within the dynamic beach hazard and areas that would not have safe
access appropriate for the nature of the development and the natural hazard.
2.4 The Clarington Official Plan generally designates Clarington's Lake Ontario shoreline
reach Environmental Protection Area and Waterfront Greenway. Similar to the DROP,
the Official Plan recognizes the development areas adjacent to the shoreline in
Newcastle, Wilmot Creek and Port Darlington east of Bowmanville Creek, designating
these areas Urban Residential. The predominant use of land in the Waterfront
Greenway designation is recreation, tourism uses, conservation and agricultural uses.
Within areas designated Environmental Protection, permitted development is limited to
low -intensity recreation and uses related to forest, fish and wildlife management or
erosion control and stormwater management.
2.5 Some properties along the edge of Lake Ontario are designated in the Official Plan as
being within the Regulatory Shoreline Area. Policies of the Regulatory Shoreline Area
do not permit the construction of new buildings or structures of any type. Further, if an
existing dwelling is destroyed or demolished, reconstruction must commence within a 24
month period, after which reconstruction is not permitted
2.6 Implementation of the policies set out in the Official Plan is achieved through zoning by-
laws. A comprehensive review of Clarington's zoning by-laws to implement the Official
Plan is underway and includes the updating of regulations for development along
Clarington's shoreline to be consistent with provincial natural hazard policies. It is
important to note, however, that an existing building or structure which is lawfully in
existence prior to the passing of the relevant zoning by-law and which does not conform
to the Official Plan, but continues to be used for such purposes, shall be deemed legal
non -conforming.
I Summary of Findings for Clarington Shoreline Reaches
3.1 The Plan includes 21 hazard maps for the Clarington shoreline, which identify updated
erosion, flood and dynamic beach hazard limits across the entirety of Clarington's
shoreline area. The hazard maps applicable to Clarington are provided in
Attachment 1.
Municipality of Clarington
Report PDS-054-21
Page 5
3.2 In general, the updated hazard mapping reflects a higher 100-year flood elevation of
+76.01 m (IGLD85). In addition, the 100-year erosion rates for non -dynamic beach
areas range from 0.17 to 0.59 m/year. For dynamic beaches, the 100-year erosion
rates range from 0.11 to 0.25 m/year.
3.3 Existing buildings and structures are present within shoreline hazard limits in older
development areas across Clarington, including in the Port Darlington, Wilmot Creek,
and Bond Head areas, as well as along Lakeshore Road between Newcastle and Port
Granby. The setback of new development from shoreline hazards can be seen in both
the Lakebreeze and Port of Newcastle communities. The updated hazard mapping will
change development limits across Clarington, generally increasing setbacks.
3.4 The Plan sub -divides Clarington's shoreline area amongst four reaches, as follows:
• Reach 3 — Oshawa Harbour to St. Marys;
• Reach 4 — St. Marys to Bowmanville Harbour;
• Reach 5 — Port Darlington to Port of Newcastle; and
• Reach 6 — Bond Head to Port Hope West Beach.
3.5 The summary of conditions and recommendations for each of these reaches is provided
in Attachment 2.
3.6 Infrastructure (engineered and natural) threats identified along Clarington's shoreline
include the following:
• Inland migration of the barrier beach in Darlington Provincial Park;
• Unprotected shoreline area at the end of the Darlington Nuclear Generating
Station;
• Poor structural condition of the west jetty at Bowmanville Creek;
• Sediment transmission into the navigation channels at Bowmanville Creek and
Graham Creek;
• Flooding and/or erosion threat for existing development areas within hazard limits;
and
• Erosion threat, compounded by sediment deficit, for Port Darlington East Beach
Park and Bond Head Park.
3.7 The Plan provides management recommendations for each reach, which will require
both public and private landowner action to implement. The management
recommendations for the reaches that capture Clarington's shoreline have been divided
into four categories and are summarized in Table 1. Reach -specific recommendations
are provided in Attachment 2.
Municipality of Clarington
Report PDS-054-21
Page 6
Table 1. Summary of Lake Ontario Shoreline Management Plan (Zuzek Inc., Nov. 2020)
Recommendations for Clarington's Shoreline Reaches
Category
Summary of Recommendations
Ecosystem
- Maintain natural bluff environments and buffers
- Continue dune restoration at Port Darlington West Beach
Park
Monitoring
- Conduct routine monitoring of the existing shore protection
at Darlington Nuclear Generating Station, St. Marys Cement
and Wilmot Creek Retirement Community
- Monitor the waterfront trail location relative to the eroding
bluffs at the Port of Newcastle
- Monitor bluff crest regression and slope stability along the
Bond Head Bluffs and implement frequent hazard map
updating
Infrastructure
- Structural upgrades to the west jetty at Bowmanville Creek
and the jetties at Graham Creek
- Development of sediment by-passing programs at
Bowmanville Creek and Graham Creek to nourish eroding
park areas to the east of these locations
- Implementation of flood proofing measures for development
on low lying lands within the hazard limit
Land Use Planning
- Avoid further development on hazardous lands
- Consideration of community scale solutions for hazard
protection or retreat for land subject to acute hazard risk
3.8 Climate change impacts are also assessed in the Plan and it is noted that warmer
winters will cause a reduction in ice cover on Lake Ontario, with ice -free winters
predicted by late century. Winter ice cover and shoreline ice accumulations in spring
protect shoreline areas from wave impacts. Without ice protection, winter and spring
wind events will drive waves into the shoreline and cause greater shoreline erosion.
4. Implementation
4.1 A collaboration of municipal, Conservation Authority, provincial and federal agencies,
and shoreline property owners will be needed to meet the objectives of the Plan and
implement strategies to mitigate risks.
Municipality of Clarington
Report PDS-054-21
4.2 Initiatives already completed or underway include:
Page 7
• Adoption of the Clarington Flood Response Plan by Council in December 2017
and its incorporation into the Municipality of Clarington Emergency Plan;
• Updating of natural hazard mapping by CLOCA and GRCA to reflect shoreline
flood hazard, erosion hazard, and dynamic beach hazards as mapping in the Plan;
• An Erosion Analysis and Report for the jetty at Bond Head Park to identify
solutions to identify long-term strategies for beach nourishment and erosion
prevention and conceptual design alternatives for repair of the jetty and beach
area;
• A comprehensive review of Clarington's zoning by-laws, which will implement
shoreline natural hazard policies of the Clarington Official Plan, as amended by
Official Plan Amendment 107, and updated natural hazard mapping;
• Submission of correspondence by the Municipality to Fisheries and Oceans
Canada — Small Craft Harbours, the federal agency responsible for piers on the
east and west of the channel entrance at Bowmanville Creek, requesting they
carry out the work identified by the Lake Ontario Shoreline Management Plan
(Attachment 3);
• Initiation by CLOCA of a Lake Ontario Shoreline Hazard Summary, Risk
Assessment and Management Plan to better understand and quantify the risks
associated with the hazards where existing development has been identified within
the shoreline hazard limits and to identify potential mitigation solutions to eliminate
or reduce the risks;
• Integration of relevant shoreline hazard management recommendations into the
Clarington Corporate Climate Action Plan, supporting coordination of mitigation
and resiliency planning for areas of Municipal authority; and
• Development of flood risk assessment data and public communications strategy by
the Region of Durham, in consultation with local municipalities and community
stakeholders, to raise awareness across Durham Region about climate change
related flood risks, improve flood preparedness.
4.3 The potential cost implications to address management recommendations for existing
development within the shoreline hazard limits will be significant and requires support
from local Conservation Authorities and other levels of government. The Municipality
and the local Conservation Authorities continually explore funding options to contribute
to addressing shoreline changes in the community.
4.4 The frequency for future updating the plan to reflect notable changes in natural hazard
policy, Lake Ontario water level regulation, or physical changes to the shoreline will
need to be further explored with the Conservation Authorities. In addition,
Municipality of Clarington
Report PDS-054-21
Page 8
implementation will need to consider roles and responsibilities for shoreline erosion
monitoring.
4.5 To support the prioritization of actions that are the responsibility of the Municipality to
implement from the updated Plan, the Planning & Development Services Department
has budget allocated to undertake an update to the Municipality of Clarington Waterfront
Study completed in 1993. This Study outlined the need for land acquisition and
development of waterfront parks for the Courtice, Bowmanville and Newcastle urban
centres. In particular it emphasized public access to the waterfront and was the basis
for the Waterfront Trail linkages through Clarington. The recommendations of this Study
have been largely implemented. Compiling data and background information gathering
will continue through the fall, drafting and issuance of Terms of Reference for the
engagement of consulting services to undertake the update study is anticipated early in
2022.
5. Concurrence
This report has been reviewed by the Director of Public Works who concurs with the
recommendation.
6. Conclusion
6.1 The updated Lake Ontario Shoreline Management Plan (Zuzek Inc., November 2020)
provides updated hazard limits and management recommendations for the shoreline
reaches within the Municipality.
6.2 The information contained in the Plan provides the Municipality with important
information to address provincial land use planning policy requirements for shoreline
areas. Beyond implementing the updated shoreline hazard mapping, the Municipality,
the Region of Durham, GRCA and CLOCA have a number of initiatives underway or
planned that will contribute to reducing coastal risks and increasing community
resilience.
6.3 Implementation of the Plan will require resources and collaboration, both public and
private. Where shoreline hazards pose a significant risk to human safety and property,
collaboration with senior levels of government will be needed to implement strategies to
mitigate the risk. Staff will continue to seek funding opportunities to support Municipal
projects that will contribute to implementation of the Plan.
Municipality of Clarington
Report PDS-054-21
Page 9
Staff Contact: Amy Burke, Senior Planner, 905-623-3379 ext. 2423 or aburke@clarington.net.
Attachments:
Attachment 1 — Lake Ontario Shoreline Management Plan (2020) Hazard Maps — Clarington
Attachment 2 — Summary of Conditions and Recommendation, Reach 3 — 6 (Clarington)
Attachment 3 — Letter to Small Crafts and Harbours regarding West Jetty at Bowmanville
Interested Parties:
The following interested parties will be notified of Council's decision:
Central Lake Ontario Conservation Authority
Ganaraska Region Conservation Authority
Port Darlington Community Association
St. Marys Cement
Ontario Power Generation
Attachment 1 to Report PDS-054-21
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping`
100 Year Flood Level
o
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1% (i.e., probability, P=0.01). The 100 Year
v
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
(+75.55 m CGVD2013)
e"e.•'' Erosion Hazard Limit
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping_
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and waves
For embayments, the standardized 15 m setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
0
Stable Slope Allowance
0
0
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff.
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverme erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may o0
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a 00
barrier beach. Refer to the Lake Ontario Shoreline Mana ement Plan �
Conservation Authority for additional details on the regulatory limit g v
and implications for new development. report for additional details.
DATA SOURCES:
Datums:
Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres.
IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres
To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions
0.46 in.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario.
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
O 5� 1�0
additional details. N
2��
Statistics Canada Catalogue no. 92-500-X
W E
I
in
Inset Map: © OpenStreetMap contributors
S
PREPARED BY: •"` °°°
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aereae. zu m S.J.lAGa11
�� 100189144
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
tvwrek. sip 7A
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of e, proposed development on or adjacent arising from its use. This map is provided without warranty of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
1r
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676800 677000 677200 677400 677600 677800
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1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
.s
with support from Durham Region.
0 5
1 i i i i -1km
hf Central CLOCA
100 Whiting Avenue
Lake Ontario Oshawa, Ontario4113T3
PhonC O N S E R V A T I O N Web: ww5cloca.cow
Web: www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
21 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Ma
100 Year Flood Level
0
o
N
In
The 100 Year Combined Flood Level considers both static lake level and
10
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and waves
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope. o
0
0
Stable Slope Allowance oOo
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood c
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan v
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 m (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
Statistics Canada Catalogue no. 92-500-X w E
I Ira
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
v
rerEae. zu� m � S.J.IAGaa
�� 100189144
Zuzek inc. ° ° ENGINEERING oco�
ONE WORLD
tvwrdn sip Z�W
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
'\ 'r
2s ss 'r 135Y+r
4 % Oshawa zz ` i� !�� 3 34 3531
\.
f/f
z5raa39/Fz \..
Whitby ` �✓ � ✓� 18 19 r 29 30
oa✓�� 10 11 12 13 °
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4 5 8 Y
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raj
1 LAKE O N T A R I O
Reach
M
O
b
O\
h
00
V
677800 678000 678200 678400 678600 678800
b �'O
o` 9
�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1 km
off Central CLOCA
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
22 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Ma
100 Year Flood Level
0
o
N
In
The 100 Year Combined Flood Level considers both static lake level and
10
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and waves
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope. o
0
0
Stable Slope Allowance oOo
The Stable Slope Allowance is defined as a horizontal setback equivalent `r
to 3.0 times the height of the bank or bluff
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood c
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan v
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 m (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
Statistics Canada Catalogue no. 92-500-X w E
I Ira
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
v
rerEae. zu� m � S.J.IAGaa
�� 100189144
Zuzek inc. ° ° ENGINEERING oco�
ONE WORLD
tvwrdn sip Z�W
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1 km
off Central CLOCA
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
23 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Ma
100 Year Flood Level
0
o
N
In
The 100 Year Combined Flood Level considers both static lake level and
10
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and waves
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope. o
0
0
Stable Slope Allowance oOo
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood c
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan v
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 m (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. 0 50 1�0 20�
Statistics Canada Catalogue no. 92-500-X w E
I Ira
Inset Map: ©OpenStreetMap contributors
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PREPARED BY: •"` °°°
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�� 100189144
Zuzek inc. ° ° ENGINEERING oco�
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This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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00
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b �'O
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�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
.t
with support from Durham Region.
0 5
1 i i i i -1 km
off Central CLOCA
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
24 of 37
680800 681000 681200 681400 681600
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stone surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
0
0
v
DATA SOURCES:
Datums:
Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres.
IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres
To convert from IGLD85 to CGVD2013, subtract
O
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
ID
Note: There are local variations along the reaches
h
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
�
Contains information licensed under the Open Government Licence - Ontario.
additional details.
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X
O 50 100
N
2.��
W E
I
Ira
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
Oxf
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�� 100189144
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
tvWrck. ill 7A
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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20 30
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0
0
10
v
680800 681000 681200 681400 681600
b �O
n
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1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
�km
off Central 10Whi
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
0
0
0
v
0
0
v
CLOCA Map
25 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave o
effects are calculated based on localized nearshore conditions and waves. o
10
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff.
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2.��
Statistics Canada Catalogue no. 92-500-X W E
I Ira
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
Oxf
rerEae. zu m S.J.IAGaa
�� 100189144
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
tvWrck. ill 7A
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
-_
'\ 28 ss r Y+rs ni5
S36\37
4 % Oshawa \ u ��� 3 3431
35 \
E �iSS�alb f/f
a� I Whitby ` ✓! 18 19 t 39yz5 29 30
6 14
3 7 10 11 12 13
N� 0 4 5 8 9 Pl
1 LAKE O N T A R I O
Reach
M
0
0
O
O
00
01
h
7
0
0
10
v
681800 682000 682200 682400 682600 682800
ra t'o
o� 9
�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1km
CLOCA
off Central W'00
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
26 of 37
O
0
0
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
Geographical Names
o Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 m interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave o
effects are calculated based on localized nearshore conditions and waves. o
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff.
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence - Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
Statistics Canada Catalogue no. 92-500-X W E
I Ira
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
Oxf
rerEae. zu m S.J.IAGaa
�� 100189144
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
tvWrck. ill 7A
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
-_
'\ 28 ss r Y+rs ni5
S36\37
4 % Oshawa \ u ��� 3 3431
35 \
E �iSS�alb f/f
a� I Whitby ` ✓! 18 19 t 39yz5 29 30
6 14
3 7 10 II 12 13 y\—
N� 0 4 5 8 9 Pl
1 LAKE O N T A R I O
Reach
M
0
0
O
O
00
01
h
7
0
0
v
682800 683000 683200 683400 683600 683800
ra t'o
o� 9
�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1km
off Central 10Whi
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
CLOCA Map
27 of 37
0
0
10
0
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES:
0
o0
2018 Orthophotography provided by © First Base Solutions
Datums: Datum Conversion:
Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
10
00
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
7
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario.
additional details.
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X
N
O 5� l�� 2��
W E
I Im
Inset Map: ©OpenStreetMap contributors
S
PREPARED BY: •"` °°°
Oxf
rerEae. zu m S.J.IAGatI
o �� 100189144
Zuzek inc.
2,
ENGINEERING ocofi °`
m
ONE WORLD
tve.r4l sip7A
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
<\yam ar
Whitby
1
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l
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1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
.t
with support from Durham Region.
0 5
�km
683800 684000 684200 684400 684600
off Central 10Whi
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
0
O
m
7
CLOCA Map
28 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
0
0
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stone surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
o
The Toe of Bluff is the transition from the gently sloping beach to the
C:1
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
0
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
o
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES:
Datums:
Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres.
IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres
To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario.
additional details.
N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
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(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied. 0
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605 Rossland Road East
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LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
o
Lake Ontario Shoreline Management Plan for additional details.
�
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
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CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized is by
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shoreline/riverine erosion may occur and subject to review
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the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES:
Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
C
Contains information licensed under the Open Government Licence - Ontario.
additional details.
N
10
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
0 50 100 200
Statistics Canada Catalogue no. 92-500-X
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Inset Map: ©OpenStreetMap contributors
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beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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off Central W'00
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
o
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized is byLo
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shoreline/riverine erosion may occur and subject to review
the Conservation Authority.
10
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
v
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES:
Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
C
Contains information licensed under the Open Government Licence - Ontario.
additional details.
N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
0 50 100 200
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Statistics Canada Catalogue no. 92-500-X
W
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Inset Map: ©OpenStreetMap contributors
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(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1--i i i i -1 km
CLOCA
off Central W'00
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
o
Lake Ontario Shoreline Management Plan for additional details.
10
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
c
localized shoreline/riverine erosion may occur and is subject to review by
N
the Conservation Authority.
10
v
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES:
Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions
Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions
0.46 m.
Note: There are local variations along the reaches
o
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry.
within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario.
additional details.
b
N
N
10
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
0 5� l�� 20� ` `
00
V
Statistics Canada Catalogue no. 92-500-X
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Inset Map: ©OpenStreetMap contributors
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Zuzek inc. ° ° ENGINEERING ocofi
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This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability o0
7
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1km
CLOCA
off Central W'00
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping_
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
Erosion Hazard Limit
(+75.55 in CGVD2013).
Flood Hazard Limit
Dynamic Beach Hazard Limit
Base Mapping;
11 Geographical Names
O Dynamic Beach (Start Pt)
• Dynamic Beach (End Pt)
— Road Network
Topographic Contours (2 in interval)
CLOCA Administrative Boundary
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
to 3.0 times the height of the bank or bluff.
Erosion Hazard Limit
0
v
The landward extent of the Erosion Hazard is the sum of the 100 year
C`1
erosion rate plus the Stable Slope Allowance, measured horizontally from
the toe of the bank or bluff.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS: Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development. report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 m (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence - Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� I�� 2��
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Inset Map: ©OpenStreetMap contributors
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(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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off Central 10Whi
100 Whiting Avenue
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C O N S E R V A T I O N phone: 905-
579-Web: www.cloca 11
loca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence - Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
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Inset Map: ©OpenStreetMap contributors
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beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or N
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0 5
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100 Whiting Avenue
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phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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34 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
stonn surge, having a combined probability of being equalled or exceeded
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence - Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
Statistics Canada Catalogue no. 92-500-X W ` ` E
I i i I I 1 i i Ira
Inset Map: © OpenSacctMap contributors
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(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
10
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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100 Whiting Avenue
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Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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CLOCA Map
35 of37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapping
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
c
stone surge, having a combined probability of being equalled or exceeded
r�
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
�`°...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
Geographical Names
Stable Slope Allowance
0
o
The Stable Slope Allowance is defined as a horizontal setback equivalent
10
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
v
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
O
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
o0
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
M
and implications for new development.
report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� l�� 2��
Statistics Canada Catalogue no. 92-500-X W E
I Ira
Inset Map: ©OpenStreetMap contributors
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(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
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CLOCA
off Central W'00
100 Whiting Avenue
Lake Ontario Oshawa,
Ontario3T3
phone:5411
CO N S E R V A T I O N Web:www.cloca.cow/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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CLOCA Map
36 of 37
Central Lake Ontario Conservation Authority (CLOCA)
LEGEND:
DEFINITIONS:
Hazard Mapin
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
CD
stone surge, having a combined probability of being equalled or exceeded
M
100 Year Flood Level
during any year of 1 % (i.e., probability, P=0.01). The 100 Year
Combined Flood Level elevation for CLOCA is +76.01 in IGLD85
e"•...•'' Erosion Hazard Limit
(+75.55 in CGVD2013).
. N❖` Flood Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and uprush. For the exposed shoreline, wave
Dynamic Beach Hazard Limit
effects are calculated based on localized nearshore conditions and waves.
For embayments, the standardized 15 in setback is applied. Refer to the
Lake Ontario Shoreline Management Plan for additional details.
Toe of Bluff
The Toe of Bluff is the transition from the gently sloping beach to the
Base Mapping;
steep portion of the bank or bluff slope.
0
Geographical Names
Stable SlopeAllowance
The Stable Slope Allowance is defined as a horizontal setback equivalent
O Dynamic Beach (Start Pt)
to 3.0 times the height of the bank or bluff.
• Dynamic Beach (End Pt)
Erosion Hazard Limit
The landward extent of the Erosion Hazard is the sum of the 100 year
— Road Network
erosion rate plus the Stable Slope Allowance, measured horizontally from
Topographic Contours (2 m interval)
the toe of the bank or bluff.
r -
CLOCA Administrative BOUriClary
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review by
the Conservation Authority.
INTERPRETATION OF THE HAZARD MAPS:
Dynamic Beach Hazard Limit
The hazard maps were prepared to support the Lake Ontario
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Shoreline Management Plan. The hazard limits are not the official
Hazard plus 30 metres measured horizontally. Local conditions may
O
regulatory limits of the Conservation Authority. Please contact the
require a modified mapping approach if the beach is eroding and/or a
c
N
Conservation Authority for additional details on the regulatory limit
barrier beach. Refer to the Lake Ontario Shoreline Management Plan
and implications for new development.
report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2018 Orthophotography provided by © First Base Solutions Horizontal: UTM 17N NAD1983, metres. IGLD1985 - CGVD2013 = 0.46 to (average)
Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
2018 Digital Terrain Model provided by © First Base Solutions 0.46 m.
Note: There are local variations along the reaches
2016 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Forestry. within CLOCA. Refer to the Lake Ontario SMPfor
Contains information licensed under the Open Government Licence — Ontario. additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census. O 5� 1�� 2��
Statistics Canada Catalogue no. 92-500-X W E
I Ira
Inset Map: ©OpenStreetMap contributors
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PREPARED BY: •"`^°p°
rerrae. zu� m � S.J.lAGa11
�� 100189144
Zuzek inc. o ° ENGINEERING ocofi
ONE WORLD
tvwrdn sip Z�W
This map was published March 2020 for the Central Lake Ontario Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(CLOCA). The mapping of hazardous lands, including erosion, flooding, and dynamic CLOCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
beach areas, is subject to change. The proponent of a proposed development on or adjacent arising from its use. This map is provided without warranty, of any kind, either expressed or
to the hazardous lands should contact CLOCA to discuss permit requirements. implied.
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�1 Mapping prepared by Zuzek Inc. for the
Central Lake Ontario Conservation Authority,
with support from Durham Region.
0 5
1 i i i i -1km
off Central 10Wha
100 Whiting Avenue
Lake Ontario Oshawa, Ontario4113T3
C O N S E R V A T I O N phone: 905- loca., 11
Web: www.cloca.com/
Durham Region
605 Rossland Road East
Whitby, Ontario LIN 6A3
Telephone: 905-668-7711
Toll -Free: 1-800-372-1102
Web: www.durham.ca
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CLOCA Map
37 of 37
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
O
The 100 Year Combined Flood Level considers both static lake level and
C>
100 Year Flood Level
storm surge, having a combined probability of being equalled or
10
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
O
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood oc
Hazard plus 30 metres measured horizontally. If the dynamic beach is M
eroding, an additional erosion allowance is included and a separate 1 3
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline I a
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
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Ganaraska Region Conservation Authority.
691200 691400 691600 691800 692000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
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GRCA Map
1 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
o
The 100 Year Combined Flood Level considers both static lake level and
ov
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
c
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
c
O
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood o
Hazard plus 30 metres measured horizontally. If the dynamic beach is M
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline v
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
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34 35 36 37 38
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LAKE 0NTARI0
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Ganaraska Region Conservation Authority.
692200 692400 692600 692800 693000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
GRCA Map
2 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
O
The 100 Year Combined Flood Level considers both static lake level and
ov
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
v
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
c
o
Dynamic Beach (Start Pt)
O
M
`10
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood o
Hazard plus 30 metres measured horizontally. If the dynamic beach is c
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
\s"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING V`caocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
43
_-____ 38 39 40 4142
36
28 29 30 31 32 33
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
693200 693400 693600 693800 694000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
GRCA Map
3 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
O
The 100 Year Combined Flood Level considers both static lake level and
ov
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
v
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
c
o
Dynamic Beach (Start Pt)
M
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood o
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
-T � �rA��'i r_,..� i e as
ie\ sa.e� 39 40 41
34 35 36 37 38
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
694200 694400 694600 694800 695000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario L lA 3V8
t1r4J a Phone: (905) 885-8173
CONSERVATION Web: www.grca.on.ca
0
M
v
GRCA Map
4 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
o
The 100 Year Combined Flood Level considers both static lake level and
w
100 Year Flood Level
storm surge, having a combined probability of being equalled or
M
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and upmsh. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 In setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
g y p g
o
steep portion of the bank or bluff slope.
�
o
Dynamic Beach (Start Pt)
10
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood c
Hazard plus 30 metres measured horizontally. If the dynamic beach is M
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
Inset Map: C OpenStreetMap contributors M W E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2, JL:o
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
- �rs9% i ^ _,..� E as
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
695200 695400 695600 695800 696000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario L lA 3V8
t1r4J a Phone: (905) 885-8173
CONSERVATION Web: www.grca.on.ca
CD
M
O
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M
W
0
0
0
M
7
GRCA Map
5 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
O
The 100 Year Combined Flood Level considers both static lake level and
oho
100 Year Flood Level
storm surge, having a combined probability of being equalled or
10
00
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
O
steep portion of the bank or bluff slope.
CD
O
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood o0
Hazard plus 30 metres measured horizontally. If the dynamic beach is M
eroding, an additional erosion allowance is included and a separate 1 3
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline I v
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence - Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
-T I'sr A v`t `Yr-...� M tE- Bo
i�\ sa.e� 39 40 41
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9 10 11 12
2 3 4 5\ 6 7 8 _ d
LAKE 0NTARI0
O
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V
Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
696200 696400 696600 696800 697000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
0
M
7
GRCA Map
6 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
O
The 100 Year Combined Flood Level considers both static lake level and
°Oo
ov
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
tr
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 In setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
o
steep portion of the bank or bluff slope.
o
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood o0
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence - Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w $
At
WX
Is"
PEraad. zu m S.J.lAGM7
100189144
2,
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
aw.r4n sip ZdG
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
-T I" �rS,^;��—i �°, � ^ r_,..� "" t e �.as
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V
Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
697200 697400 697600 697800 698000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
co
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7
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v
O
O
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GRCA Map
7 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
0
c
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 m setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping:
o
Toe of Bluff
°O
n
GCOgYaphlCal Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
DATA SOURCES:
2019 Orthophotography and Digital Surface Model (DSM) provided by the Ministry of Natural
Resources and Forestry
2016-2017 LiDAR Digital Tannin Model obtained from the Ministry of Natural Resources and
Forestry. Contains information licensed under the Open Government Licence — Ontario.
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X
Inset Map: C OpenStreetMap contributors
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
0
0
Dynamic Beach Hazard Limit `M°
The Dynamic Beach Hazard Limit is defined as the sum of the Flood v
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details
Datum Conversion:
IGLD 1985 - CGVD2013 = 0.42 m (average)
To convert from IGLD85 to CGVD2013, subtract
0.42 m.
Note: There are local variations along the reaches
within GRCA. Refer to the Lake Ontario SMP for
additional details. N
0 50 100 200 0
I IM w E
M
S W
7
Datums:
Horizontal: UTM 17N NAD1983, metres.
Vertical: CGVD2013, metres
PREPARED BY: •"` °°°
At
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�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\10- do sip 7A
This map was published March 2020 for the Ganmaska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or o
hazardous lands should contact GRCA to discuss permit requirements. implied. o
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
698200 698400 698600 698800 699000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario L lA 3V8
t1r4J a Phone: (905) 885-8173
CONSERVATION web: www.grea.on.ca
0
0
tr
0
0
M
O
O
M
GRCA Map
8 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
w
100 Year Flood Level
storm surge, having a combined probability of being equalled or
c
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 In setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
o
Stable Slope Allowance
o
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate o0
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
At
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ONE WORLD
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This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
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699200 699400 699600 699800 700000
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2216 County Road 28
rr���� Port Hope, Ontario LlA3V8
CONSERVATION Phone: (905) 885-8173
Web: www.grca.on.ca
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9 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
ov
100 Year Flood Level
storm surge, having a combined probability of being equalled or
o
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 In setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
o
Stable Slope Allowance
e
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate c
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline r°O
Management Plan report for additional details. oOo
v
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
w
At
PEraad. ZU R o S.J.lAGM7
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)-A� sip 7A
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
43
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
700200 700400 700600 700800 701000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
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GRCA Map
10 of 43
Ganaraska Region Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*-V
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however, o
localized shoreline/riverine erosion may occur and is subject to review o00
by the Conservation Authority.
v
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotography and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence - Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
Inset Map: C OpenStreetMap contributors M W E
S
PREPARED BY: •"` °°°
w $
At
Is"
PEraad. zu m S.J.lAGM7
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)-A� sip 7A
M
9
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This map was published March 2020 for the Ganazaska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither o
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or °p
hazardous lands should contact GRCA to discuss permit requirements. implied.
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
701200 701400 701600 701800 702000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
b
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GRCA Map
11 of 43
Ganaraska Region Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*-V
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however, o
localized shoreline/riverine erosion may occur and is subject to review C:1
by the Conservation Authority.
v
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotography and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence - Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
Inset Map: C OpenStreetMap contributors M W E
S
PREPARED BY: •"` °°°
w $
At
Is"
PEraad. zu m S.J.lAGM7
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)-A� sip 7A
13
b
V
0
This map was published March 2020 for the Ganazaska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither o
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability M
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
t / _43
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
702200 702400 702600 702800 703000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
0
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12 of 43
Ganaraska Re
LEGEND:
Hazard Mapping;
100 Year Flood Level
»•°
Flood Hazard Limit
1*-V
Erosion Hazard Limit
F7
Dynamic Beach Setback
ion Conservation Authority (GRCA)
DEFINITIONS:
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
(+75.55 in to+75.60 in CGVD2013).
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
o
allowance for wave runup and upmsh. For the exposed shoreline, wave
a
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n Geographical Names The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o Dynamic Beach (Start Pt)
Stable Slope Allowance
• Dynamic Beach (End Pt) The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
— Road Network
Erosion Hazard Limit
GRCA Administrative Boundary The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES:
Datums:
Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural
Horizontal: UTM 17N NAD1983, metres.
IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry
Vertical: CGVD2013, metres
To convert from IGLD85 to CGVD2013, subtract
ID
O
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and
0.42 m.
Note: There are local variations along the reaches
O
I
Forestry. Contains information licensed under the Open Government Licence — Ontario.
within GRCA. Refer to the Lake Ontario SMP for
eo
V
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
additional details. N
Statistics Canada Catalogue no. 92-500-X
0 50 100
200
W E
Inset Map: C OpenStreetMap contributors
M
S
PREPARED BY: •"` °°°
w $
At
Is"
PEraad. zu m S.J.lAGM7
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)-A� sip 7A
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
t / _43
i�\ sa.e� 39 40 4142
34 35 36 37 38
30 31 32 33
�• / °` 28
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H2
723
22
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17
^•t
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11 12 13
2 3 4 'S \ 6 7 8 — d
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
703200 703400 703600 703800 704000
GRCA Main Office
2216 County Road 28
rr��J PortonHope, Ontario LlA3V8
i1 4a Phe:(905)885-8173
CONSERVATION Web: www.grca.on.ca
0
V
O
00
10
v
GRCA Map
13 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
o
Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
°O
v
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
F1
Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
o0
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
D
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural
Datums:
Horizontal: UTM 17N NAD1983, metres.
Datum Conversion:
IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry
Vertical: CGVD2013, metres
To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and
Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario.
within GRCA. Refer to the Lake Ontario SMP for
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
additional details. N
Statistics Canada Catalogue no. 92-500-X
0 50 100
200
W E
Inset Map: C OpenStreetMap contributors
M
S
PREPARED BY: •"` °°°
w $
At
Is"
PEraad. zu m S.J.lAGM7
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)-A� sip 7A
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
— S^l 9%'ir.Least
43
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a
Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
704200 704400 704600 704800 705000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION Web: www.grca.on.ca
0
0
h
0
v
O
N
v
GRCA Map
14 of 43
Ganaraska Region
Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
o
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
v
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo
Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7
Dynamic Beach Setback
allowance for wave runup and upmsh. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 in setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
o0
Geographical Names
The Toe of Bluff is the transition from the slo beach to the
gently ping g
v�
steep portion of the bank or bluff slope.
O
Dynamic Beach (Start Pt)
Stable Slope Allowance
•
Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
—
Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
DATA SOURCES:
2019 Orthophotography and Digital Surface Model (DSM) provided by the Ministry of Natural
Resources and Forestry
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and
Forestry. Contains information licensed under the Open Government Licence — Ontario.
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X
Inset Map: C OpenStreetMap contributors
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
0
Dynamic Beach Hazard Limit N
The Dynamic Beach Hazard Limit is defined as the sum of the.,
he Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
Datum Conversion:
IGLD 1985 - CGVD2013 = 0.42 m (average)
To convert from IGLD85 to CGVD2013, subtract
0.42 m.
Note: There are local variations along the reaches
within GRCA. Refer to the Lake Ontario SMP for
additional details. N
0 50 100 200
I Im W E c
S �
W
V
Datums:
Horizontal: UTM 17N NAD1983, metres.
Vertical: CGVD2013, metres
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This map was published March 2020 for the Ganmaska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied. o
00
GRCA
r E Boundar �
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7 �za 39 40
34 35 36 37
29 30 31 32 33
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24 25 26
20 21 22 23
19
17
-' LAKE 0NTARI0
Reach 5
0 5
Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
705200 705400 705600 705800 706000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION web: www.grea.on.ca
0
0
N
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GRCA Map
15 of 43
Ganaraska Region Conservation Authority (GRCA)
LEGEND:
DEFINITIONS:
Hazard Mapping;
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
o0
100 Year Flood Level
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Flood Hazard Limit
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
»•°
(+75.55 in to+75.60 in CGVD2013).
1*vo Erosion Hazard Limit
Flood Hazard Limit
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
F7 Dynamic Beach Setback
allowance for wave runup and uprush. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n Geographical Names
The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o
o Dynamic Beach (Start Pt)
Stable Slope Allowance
• Dynamic Beach (End Pt)
The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff.
— Road Network
Erosion Hazard Limit
GRCA Administrative Boundary
The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dvnamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
v
Management Plan report for additional details
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotography and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
Inset Map: C OpenStreetMap contributors M W E
S
O
O
N
h
PREPARED BY: •"` °°°
At
r+araae. zu m S.J.lAGa11
�� 100189144
Zuzek inc. ° ° ENGINEERING ocofi
ONE WORLD
tvw+^dn sip Z�W
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
t rrs'�i T
Reach 5
East
®®®®®®®® Reach 8
m 11—® Reach 7
706200 706400 706600 706800 707000
O
O
N
10
Mapping prepared by Zuzek Inc. for the
^.J oo Ganaraska Region Conservation Authority. IRNW GRCA Main Office GRCA Map
Port Hope, Ontario L lA 3 V 8
Ganaraska Phone: (905) 885-8173 16 of 43
0 5 CONSERVATION Web: www.grca.on.ca
MAP PITBLISHF,D MARCH 2O20
Ganaraska Re
LEGEND:
Hazard Mapping;
100 Year Flood Level
»•°
Flood Hazard Limit
1*-V
Erosion Hazard Limit
F7
Dynamic Beach Setback
ion Conservation Authority (GRCA)
DEFINITIONS:
100 Year Flood Level
The 100 Year Combined Flood Level considers both static lake level and
storm surge, having a combined probability of being equalled or
exceeded during any year of 1% (i.e., probability, P=0.01). The 100
Year Combined Flood Level elevation for GRCA is +76.01 in IGLD85
(+75.55 in to+75.60 in CGVD2013).
o
Flood Hazard Limit
°O
v
The Flood Hazard Limit is defined as the 100-Year Flood Level plus an
allowance for wave runup and upmsh. For the exposed shoreline, wave
effects are calculated based on localized nearshore conditions and
waves. For embayments, the standardized 15 to setback is applied.
Refer to the Lake Ontario Shoreline Management Plan for additional
details.
Base Mapping
Toe of Bluff
n Geographical Names The Toe of Bluff is the transition from the gently sloping beach to the
steep portion of the bank or bluff slope.
o Dynamic Beach (Start Pt)
Stable Slope Allowance
• Dynamic Beach (End Pt) The Stable Slope Allowance is defined as a horizontal setback
equivalent to 3.0 times the height of the bank or bluff. o0
— Road Network
Erosion Hazard Limit `O
GRCA Administrative Boundary The landward extent of the Erosion Hazard is the sum of the 100 year
erosion rate plus the Stable Slope Allowance, measured horizontally
from the toe of the bank or bluff.
INTERPRETATION OF THE HAZARD MAPS:
The hazard maps were prepared to support the Lake Ontario Shoreline
Management Plan. Wetland and riverine floodplains are not included on
these hazard maps. The Dynamic Beach Setback is the onshore limit of
the shaded pink polygon. The offshore limit in the lake highlights the
linkages between overall beach stability and health, nearshore sediment
resources, and longshore sediment transport. The hazard limit(s) are not
the official regulatory limits of the Conservation Authority. Please
contact the Conservation Authority for details on the regulatory limit
and implications for any proposed work.
The Erosion Hazard Limit is not mapped in sheltered waters, however,
localized shoreline/riverine erosion may occur and is subject to review
by the Conservation Authority.
Dynamic Beach Hazard Limit
The Dynamic Beach Hazard Limit is defined as the sum of the Flood
Hazard plus 30 metres measured horizontally. If the dynamic beach is
eroding, an additional erosion allowance is included and a separate
Erosion Hazard Limit is not shown. Refer to the Lake Ontario Shoreline
Management Plan report for additional details.
DATA SOURCES: Datums: Datum Conversion:
2019 Orthophotogaphy and Digital Surface Model (DSM) provided by the Ministry of Natural Horizontal: UTM 17N NAD1983, metres. IGLD 1985 - CGVD2013 = 0.42 on (average)
Resources and Forestry Vertical: CGVD2013, metres To convert from IGLD85 to CGVD2013, subtract
0.42 m.
2016-2017 LiDAR Digital Terrain Model obtained from the Ministry of Natural Resources and Note: There are local variations along the reaches
Forestry. Contains information licensed under the Open Government Licence — Ontario. within GRCA. Refer to the Lake Ontario SMP for
additional details. N
Geographical Names obtained from Natural Resources Canada Road Network File, 2016 Census.
Statistics Canada Catalogue no. 92-500-X 0 50 100 200
W
Inset Map: C OpenStreetMap contributors M E
S
PREPARED BY: •"` °°°
At
r+araae. zu m S.J.IAGaR
�� 100189144
2, VLEERINGZuzek inc. ° ° ocofi
ONE WORLD
TV\z)- do sip 7A
This map was published March 2020 for the Ganaraska Region Conservation Authority Every reasonable effort has been made to ensure the accuracy of this map. However, neither
(GRCA). The mapping of hazardous lands, including erosion, flooding, and dynamic beach GRCA, Zuzek Inc., SJL Engineering, or any other affiliated party assume any liability
areas, is subject to change. The proponent of a proposed development on or adjacent to the arising from its use. This map is provided without warranty of any kind, either expressed or
hazardous lands should contact GRCA to discuss permit requirements. implied.
l'�► - — --
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Mapping prepared by Zuzek Inc. for the
Ganaraska Region Conservation Authority.
707200 707400 707600 707800 708000
GRCA Main Office
2216 County Road 28
r�� Port Hope, Ontario LlA3V8
t1r4J a Phone:(905)885-8173
CONSERVATION web: www.grea.on.ca
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17 of 43
Attachment 2 to Report PDS-054-21
Reach 3 — Oshawa Harbour to St. Mary's
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Local Conditions
• Reach Length = approximately 11 km.
• The Port of Oshawa and St. Mary's loading facility represent the boundaries of a sub -
littoral cell.
• The McLaughlin Bay Wildlife Reserve, Second Marsh Wildlife Area, and Darlington
Provincial Park represent a significant natural heritage corridor in Reach 3.
• The three natural areas feature extensive coastal wetlands.
• The Darlington Nuclear Generating Station is also a significant development and covers
approximately two kilometres of shoreline in Reach 3.
• There is no residential development along the shoreline in Reach 3 and a small amount
of agricultural land.
Natural Beach & Embryo Dunes at Darlington
Shore Protection fronting Darlington Nuclear
Prov. Park.
Power Plant
. F T1-
1020.01 Lake Ontario p.l
Shoreline Management Plan
Shoreline Structures
• Reach 3 is 28% armoured, 72% natural.
• Armoured portions of shoreline are limited to shoreline immediately east of Oshawa
Harbour, and the shoreline fronting Darlington Nuclear Power Plant and St. Mary's
Cement Plant.
• Shoreline protection throughout the reach is generally well engineered armour stone
revetments in moderate to good condition.
• Shoreline protection fronting St. Mary's is ad -hoc in places and should be monitored and
maintained as required.
• Tolerance for additional shoreline armouring (low/medium/high):
000
• Sample statistics (for armoured portion of shoreline):
Structure Type (Reath 3) Structure Condition (Reach 3)
i�
49%
51%
■ Revetment
■ Seawall ■ Failed
❑ Jetty ❑ Poor
O Groyne ❑ Moderate —
0 Headland ❑ Good
■ Breakwater ■ Excellent
0 Other 0 Unknown
Sediment Supply and Longshore Sediment Transport
• Longshore sediment transport potential is very low (0 to 5,000 m3/year) west of
Darlington Provincial Park, with nearly equal eastward and westward components.
• Longshore sediment transport potential east of Darlington Provincial Park is very high,
with the net transport potential being upwards of 100,000 m3/year from west to east.
Actual transport is however likely less than 10% of the potential due to the limited
sediment supply, which is predominantly from eroding bluffs between the Provincial
Park and Nuclear Power Plant.
• A significant shoal offshore of Darlington Provincial Park likely creates a depositional
area in its lee (i.e. Darlington Beach).
• The Nuclear Power Plant and St. Mary's Cement Plant both present partial obstructions
to longshore transport, however this effect is likely secondary to the small amount of
1020.01 Lake Ontario p.2
Shoreline Management Plan
actual sediment availability and transport through the reach, as is evident by the lack of
significant fillet beaches on the west side of these landmarks.
y, c
•
• QQ 10M
■ West Transport Potential
❑ East Transport Potential
Q Wave Climate Output Location
111111 km
Summary of Natural Hazards
• 100-year Erosion Rate (Stable Slope not included):
Start End 100-year Erosion Rate Bluff Crest or
(lat, long) (lat, long) (m/year) Waterline
43.8649,-78.8209 43.8686,-78.8185 0.25 Bluff Crest
43.8691,-78.7793 43.87,-78.7376 0.25 Bluff Crest
43.8672,-78.7169 43.8738, -78.7 0.25 Bluff Crest
43.8749,-78.6951 43.8725,-78.6863 0.25 Bluff Crest
• 100-year Flood Level and Flood Hazard Limit (including wave uprush):
Start End 100-year Flood Level Flood Hazard
(lat, long) (lat, long) (m IGLD85') (m IGLD85')
43.8648,-78.8209 43.8684,-78.8187 +76.01 +77.88
43.8684,-78.8187 43.8684,-78.7762 +76.01 +77.64
43.8684,-78.7762 43.8749,-78.6952 +76.01 +77.74
43.8749,-78.6952 43.8782,-78.6843 +76.01 +77.83
• Dynamic Beach(es):
Start End 100-year Erosion Rate Dynamic Beach Name
(lat, long) (lat, long) (m/year) or Stable
43.8686,-78.8185 43.8696,-78.8131 0.25 Oshawa East Beach
43.8696,-78.8131 43.869,-78.8038 0.73 McLaughlin Bay Barrier Beach A
43.869,-78.8038 43.868,-78.7999 0.25 McLaughlin Bay Beach
43.868,-78.7999 43.8693,-78.7867 0.73 McLaughlin Bay Barrier Beach B
43.8693,-78.7867 43.8691,-78.7793 0.25 Port Darlington PP Beach
43.87,-78.7376 43.8694,-78.7318 0.25 Port Darlington Power Plant Fillet Beach
43.8738, -78.7 43.8749,-78.6951 Stable St. Mary's West Fillet Beach
1020.01 Lake Ontario p.3
Shoreline Management Plan
• Wave climate —1 km offshore (output location W3):
ARI (years) Depth (m) Hs (m) DIR (deg) Tp (s)
5 12.4 4.55 213 9.0
10 12.4 4.85 211 9.5
25 12.4 5.03 211 9.5
50 12.4 5.20 209 10.0
100 12.4 5.27 209 10.0
Infrastructure and Ecosystem Threats
• Barrier beach in Provincial Park (McLaughlin Bay) is actively migrating inland.
• Nuclear Plant: unprotected shoreline at east end of the plant will require shore
protection.
Shoreline Management Recommendations
• Maintain natural bluff environments and buffers.
• Monitor existing shoreline protection at the Nuclear Plant.
• Monitor shore protection at St. Mary's Plant.
Use Disclaimer
The information in this reach summary was prepared for the Central Lake Ontario Conservation Authority, the Ganaraska
Region Conservation Authority, and the Lower Trent Region Conservation Authority. If used by a third party, they agree that
the information is subject to change without notice. Zuzek Inc. and SJL Engineering Inc. assume no responsibility for the
consequences of such use or changes in the information. Under no circumstance will Zuzek Inc. or SJL Engineering Inc. be
liable for direct, indirect, special, or incidental damages resulting from, arising out of, or in connection with the use of the
information in this summary by a third party.
1020.01 Lake Ontario p.4
Shoreline Management Plan
Reach 4 — St. Mary's to Bowmanville Harbour
wit TZ , it
REACH 4
Local Conditions
• Reach Length = approximately 2.5 km.
• St. Mary's to Bowmanville Harbour is a small littoral sub -cell in the Central Lake
Ontario Conservation Authority jurisdiction.
• The Cedar Crest Beach Road community in the western half of the Reach features
lakefront properties constructed on the sand spit that separated the lake from the marsh.
The buildings are close to the lake and vulnerable to coastal flooding.
• The St. Mary's quarry is located inland of Cedar Crest Beach. St. Mary's Pier is located
at the west end of the sub -cell and features land reclamation and pier infrastructure
protruding approximately 600 m into Lake Ontario from the historical shoreline location.
• The eastern half of the reach features Port Darlington West Barrier Beach, with
Bowmanville Marsh in lee. The homes along the beach are setback approximately 50 m
from the lake and less vulnerable to coastal hazards than the western half of the reach.
The east end of the beach is public, accessible by boardwalks which were constructed to
protect the native dune grasses and beach material.
• Two armour stone jetties stabilize the navigation channel for the outlet of Bowmanville
Creek and have been trapping sand on the west side since at least the early 1950s.
Cedar Crest Beach Blvd. during Record High
Fillet Beach and Jetties at Port Darlington
Water Levels (May 2019)
(November 2018)
i►
=-
1020.01 Lake Ontario p.l
Shoreline Management Plan
Shoreline Structures
• Reach 4 is 57% armoured, 43% natural.
• The east facing shoreline of St. Mary's land is armoured with an ad -hoc rubble
revetment. This protection may require upgrades to prevent erosion and should be
monitored.
• The shoreline fronting Cedar Crest Beach Road is almost entirely armoured and features
a wide variety of structure types, levels of design and condition. All structures have a
very low crest due to the low land elevation and suffer from settlement during periods of
high lake levels due to ongoing vertical erosion of the lakebed.
• The west jetty at Bowmanville Creek is in extremely poor condition and requires
significant repairs and/or upgrades. The structure has limited ability to trap sand or to
dissipate wave energy due to its porosity and low crest. The structure roundhead which
features a navigation light is in good condition.
• Tolerance for additional shoreline armouring (low/medium/high):
000
• Sample statistics (for armoured portion of shoreline):
■ itevetmer
■ Seawall
❑ Jetty
❑ Groyne
0 Headland
■ Breakwater
❑ Other
Structure Type (Reach 4)
2%_ 1%
Waited
O Poor
❑ Moderate
M Good
■ Excellent
■ Unknown
Structure Condition (Reach 4)
2%
- Rl
Sediment Supply and Longshore Sediment Transport
• Longshore sediment transport potential is generally very low in Reach 4 with sediment
moving in both directions depending on wave conditions, away from the centre of the
reach.
• Deposition occurs at the west end of the reach against the St. Mary's lands, and at the
east end of the reach in the form of a fillet beach against the Bowmanville Creek west
jetty.
1020.01 Lake Ontario p.2
Shoreline Management Plan
• The majority of the reach is a barrier beach complex that protects a marsh in its lee. The
natural migration of the barrier has been altered through residential development and
shore protection.
DerlA
/ ■ West Transport Potential
❑ East Transport Potential
Q Wave Climate Output Location
Summary of Natural Hazards
• 100-year Erosion Rate (Stable Slope not included):
Start End 100-year Erosion Rate Bluff Crest or
(lat, long) (lat, long) (m/year) Waterline
43.8725,-78.6863 43.8781,-78.6843 0.25 Bluff Crest
43.8793,-78.6826 43.8805,-78.681 0.33 Bluff Crest
• 100-year Flood Level and Flood Hazard Limit (including wave uprush):
Start End 100-year Flood Level Flood Hazard
(lat, long) (lat, long) (m IGLD85') (m IGLD85')
43.8782,-78.6843 43.8857,-78.6750 +76.01 +77.74
43.8857,-78.6750 43.8878,-78.6648 +76.01 +77.64
• Dynamic Beach(es):
Start End 100-year Erosion Rate Dynamic Beach Name
(lat, long) (lat, long) (m/year) or Stable
43.8781,-78.6843 43.8793,-78.6826 Stable St. Mary's East Fillet Beach
43.8805,-78.681 43.8857,-78.6748 0.22 Cedar Crest Beach Rd.
43.8857,-78.6748 43.8873, -78.67 0.22 Cove Road
43.8873, -78.67 43.8877,-78.6648 Stable Port Darlington West Fillet
Beach
• Wave climate —1 km offshore (output location W4):
ARI (years) Depth (m) Hs (m) DIR (deg) Tp (s)
5 14.1 3.01 206 9.0
10 14.1 3.28 204 9.5
25 14.1 3.51 203 9.5
50 14.1 3.84 201 10.0
100 14.1 4.06 201 10.0
1020.01 Lake Ontario p.3
Shoreline Management Plan
Infrastructure and Ecosystem Threats
• Flooding and erosion threats for existing development along Cedar Crest Beach Road.
• West jetty at Bowmanville Creek requires a significant structural upgrade.
Shoreline Management Recommendations
Cedar Crest Beach Road and West Beach Road:
• Long-term incremental voluntary land disposition program required for the lands subject
to acute risks due to lack of safe access during the 100-year flood and the location of
development on a low-lying eroding dynamic barrier beach.
• Short- and medium -term management options include continuing to facilitate private
shore protection works by individual or, preferably, community scale beach nourishment
and shore protection; road reprofiling.
• West Jetty at Bowmanville Creek: structure requires upgrade to eliminate wave and
sediment transmission into the navigation channel. Dune restoration to eliminate aeolian
transport into the channel from the west fillet beach.
• Sediment dredged from the navigation channel and fillet beach could be hydraulically
bypassed to nourish the Port Darlington East Beach Park.
Use Disclaimer
The information in this reach summary was prepared for the Central Lake Ontario Conservation Authority, the Ganaraska
Region Conservation Authority, and the Lower Trent Region Conservation Authority. If used by a third party, they agree that
the information is subject to change without notice. Zuzek Inc. and SJL Engineering Inc. assume no responsibility for the
consequences of such use or changes in the information. Under no circumstance will Zuzek Inc. or SJL Engineering Inc. be
liable for direct, indirect, special, or incidental damages resulting from, arising out of, or in connection with the use of the
information in this summary by a third party.
1020.01 Lake Ontario pA
Shoreline Management Plan
Reach 5 — Port Darlington to Port of Newcastle
a.
kill
Local Conditions
• Reach Length = approximately 7.1 km.
• The jettied entrances to Port Darlington the Port of Newcastle define a littoral sub -cell
along the north shore of Lake Ontario.
• The boundary between the Central Lake Ontario Conservation Authority and the
Ganaraska Region Conservation Authority is in the centre of Reach 5.
• Significant sedimentation is ongoing in the navigation channel in Port Darlington.
• Two new residential developments are under construction along the eroding bluff
shoreline east and west of Lambs Road.
• The Wilmont Creek Community stretches along almost 3 km of the eroding bluffs.
• The Port of Newcastle community is located west of the jettied rivermouth.
Eroding Bluffs and Failed Shore Protection
Cobble Fillet Beach and Jetties at Port of
East ofPort Darlington
Newcastle
t
1020.01 Lake Ontario p.1
Shoreline Management Plan
Shoreline Structures
• Reach 5 is 25% armoured, 75% natural.
• The west end of the reach features well engineered and recently constructed shore
protection fronting Port Darlington East Beach. This structure is robust and in excellent
condition.
• Immediately east of Port Darlington East Beach there are a number of properties sitting
atop a high, rapidly eroding bluff. Some properties feature shore protection of varying
quality and condition, while others are unprotected and continue to erode. These
properties are at high risk due to their proximity to the bluff crust.
• The majority of shore protection within the reach is found in along the shores of Wilmot
Creek, a retirement community that spans the border between the Central Lake Ontario
Conservation Authority and the Ganaraska Region Conservation Authority. This
structure has been engineered and implemented in the last decade, however it is only an
interim, porous structure comprised of an armour stone berm resting directly on the
beach at the toe of the bluff. Some vertical beach erosion and horizontal recession of the
bluff is expected to continue behind the structure during periods of extreme lake levels.
• The jetties at Graham Creek (Port of Newcastle) are composite gravity structures and are
both in moderate condition. The root of both structures is comprised of native fill
material with a thin layer of minimal rock protection. These areas have suffered
significant damage during the high-water periods in 2017 and 2019 and have nearly
breached, particularly on the east side at Bond Head Parkette. These structures should
be repaired and upgraded to prevent the propagation of waves and sediment into Graham
Creek.
• Tolerance for additional shoreline armouring (low/medium/high):
000
• Sample statistics (for armoured portion of shoreline):
Structure Type (Reach 5) Structure Condition (Reach 5)
3%
■ Reve4
■ Seam
❑ Jetty
❑ Groyne
❑ Headland
* Breakwater
o Other
Z Good
• Excellent
• Unknown
1020.01 Lake Ontario p.2
Shoreline Management Plan
Sediment Supply and Longshore Sediment Transport
•
Net longshore sediment transport potential is from west to east through reach 5 with a
potential volume of 80,000 to 100,000 m3/year. The actual transport is likely less than
10,000 m3/year as the supply of sediment is predominantly limited to local bluff erosion
within the reach.
•
Deposition occurs primarily in the fillet beach to the west of the Graham Creek jetties, as
is evident by the significant offset in shoreline position from the west side to the east
(— 140 m).
•
Some deposition occurs at the west end of the cell at Port Darlington East Beach during
periods of wave action from the southeast quadrant.
•
The significant amount of hardened shoreline fronting the Wilmot Creek Retirement
Community reduces the sediment supply to the reach, however the structure is
reasonably low crested and porous and therefore does not completely mitigate the bluff
erosion that contributes sediment to the region.
•
Foitof
NewGastle
ro
is
■
West Transport Potential
■
East Transport Potential
Wave Climate Output Location 1
Summary of Natural Hazards
•
100-year Erosion Rate (Stable Slope not included):
Start End 100-year Erosion Rate Bluff Crest or
(lat, long) (lat, long) (m/year) Waterline
43.8891,-78.663 43.8976,-78.6203 0.24 Bluff Crest
43.8976,-78.6203 43.8959,-78.5975 0.24 Bluff Crest
43.8962,-78.5947 43.8953,-78.5815 0.24 Bluff Crest
•
100-year Flood Level and Flood Hazard Limit (including wave uprush):
Start End 100-year Flood Level Flood Hazard
(lat, long) (lat, long) (m IGLD85') (m IGLD85')
43.8885,-78.6624 43.8895,-78.6617 +76.01 +77.64
43.8895,-78.6617 43.8967,-78.6257 +76.01 +77.77
43.8967,-78.6257 43.8956,-78.5767 +76.01 +77.77
•
Dynamic Beach(es):
1020.01 Lake Ontario p.3
Shoreline Management Plan
Start End 100-year Erosion Rate Dynamic Beach Name
(lat, long) (lat, long) (m/year) or Stable
43.8885,-78.6641 43.8891,-78.663 Stable Port Darlington East Park
43.8959,-78.5975 43.8962,-78.5947 0.11 Wilmot Creek Barrier
Beach
43.8953,-78.5815 43.8955,-78.5764 Stable Newcastle Beach
• Wave climate —1 km offshore (output location W5):
ARI (years) Depth (m) Hs (m) DIR (deg) Tp (s)
5 13.1 4.72 211 9.5
10 13.1 4.82 211 9.5
25 13.1 5.02 208 10.0
50 13.1 5.08 208 10.0
100 13.1 5.13 208 10.0
Infrastructure and Ecosystem Threats
• West jetty at Bowmanville Creek requires a significant structural upgrade to mitigate
wave and sediment transmission into the navigation channel (reported in Reach 4).
• Port Darlington East Beach suffers from a sediment deficit.
• Residences atop bluff east of Port Darlington East Beach are threatened by erosion.
• Wilmot Creek: interim shore protection that only provides partial erosion mitigation.
• Jetties at Graham Creek require significant repairs/upgrades to their roots to mitigate
wave and sediment transmission into Graham Creek.
• Jetties at the Graham Creek trap longshore sediment transport and starve the downdrift
shoreline to the east (Bond Head).
Shoreline Management Recommendations
• Impacts of additional shoreline armouring: moderate impacts within Reach 5 but
significant negative impacts to Reach 6 to the east.
• West jetty at Bowmanville Creek requires significant structural upgrade to mitigate wave
and sediment transmission into the navigation channel.
• Implement a sediment bypassing program from the Port Darlington west fillet beach to
nourish Port Darlington East Beach Park.
• A long-term community scale solution is required for Port Darlington East Beach
community to reduce erosion and flood hazards, such as protection or retreat. For
example, a long-term voluntary land acquisition program for lands subject to acute
hazards could be implemented to return the shore lands to public open space.
• Maintain naturally eroding bluff environments.
• Wilmot Creek Development: monitor shore protection and upgrade structures as
required to provide the necessary protection.
• Monitor trail location at Newcastle and relocate inland when threatened by erosion.
• No further development in the floodplain west of Graham Creek (Port of Newcastle).
• Root of jetties at Graham Creek require significant repairs/upgrades.
• Implement a sediment bypassing program for the west fillet beach at Port of Newcastle
to nourish the eroding east beach (Bond Head Parkette, Boulton Street).
1020.01 Lake Ontario p.4
Shoreline Management Plan
Use Disclaimer
The information in this reach summary was prepared for the Central Lake Ontario Conservation Authority, the Ganaraska
Region Conservation Authority, and the Lower Trent Region Conservation Authority. If used by a third party, they agree that
the information is subject to change without notice. Zuzek Inc. and SJL Engineering Inc. assume no responsibility for the
consequences of such use or changes in the information. Under no circumstance will Zuzek Inc. or SJL Engineering Inc. be
liable for direct, indirect, special, or incidental damages resulting from, arising out of, or in connection with the use of the
information in this summary by a third party.
1020.01 Lake Ontario p.5
Shoreline Management Plan
Reach 6 — Bond Head to Port Hope West Beach
rid
H
1rn
• 1 `
kin
Local Conditions
• Reach Length = approximately 23.4 km.
• This long reach stretches from the Port of Newcastle to Port Hope West Beach.
• East of the Port of Newcastle, the Bond Head bluffs and gullies dominate the shoreline.
• The central portion of the reach features large tracks of agricultural land and small
shoreline communities, such as Port Granby and Port Britain.
• The Ontario Power Generation Wesleyville Storage is located 8 km west of Port Hope.
• Port Hope west beach is a large deposition sink for the sand and gravel transported west
to each in this reach.
• Immediately west of West Beach, the railway into Port Hope runs right along the bluff
crest and will soon require shoreline protection to stabilize the slope.
Eroding Bluffs at Bond Head
Port Hope West Beach and Jetties
Quc
•tom
_
1020.01 Lake Ontario p.1
Shoreline Management Plan
Shoreline Structures
• Reach 6 is 7% armoured, 93% natural.
• The jetties at Graham Creek at the west end of the reach are in poor condition at their
root, where the structures were close to breaching during record high lake levels in 2019.
• There is a significant offset in shoreline position from the west side of Graham Creek
(Reach 5) to the east side, where the Bond Head Parkette and properties along Boulton
street have suffered significant erosion due to a lack of sediment supply. The Parkette
and neighbouring properties have all been hardened to some degree to mitigate ongoing
erosion. These structures are mostly well engineered and in good condition, with a few
exceptions.
• Lakeshore Road is protected by an engineered armour stone revetment and is in
generally good condition.
• The high bluff shoreline from Bond Head to Port Britain, a distance of over 17 km, is
entirely natural and unprotected.
• Many private properties at Port Britain feature mostly ad -hoc shore protection. This
protection is generally in poor to moderate condition and may require upgrades.
• Tolerance for additional shoreline armouring (low/medium/high):
000
• Sample statistics (for armoured portion of shoreline):
2�
■ Revetmi
■ Seawall
❑Jetty
0 Groyne
■ Headland
■ Breakwater
■ Other
Structure Type (Reach 6)
Failed
* Poor
LIMode
bit Good
• Excellent
• Unknown
Structure Condition (Reach 6)
Sediment Supply and Longshore Sediment Transport
• Longshore sediment transport potential is very low in the embayment at the west end of
the reach (Boulton Street), with very little sediment entering this region from either
direction.
1020.01 Lake Ontario p.2
Shoreline Management Plan
• Net longshore sediment transport potential from Bond Head to Port Hope is from west to
east with net potential transport volumes in excess of 100,000 m3/year at several
locations.
• A significant percentage of this transport potential is likely realized, perhaps up to 50%
and particularly during high lake levels, due to the significant length of unprotected
eroding bluff that contributes sediment to the reach and the nearshore lakebed which is
comprised primarily of sand and cobble.
• Deposition occurs primarily at the Port Hope west fillet beach to the west of Port Hope
Harbour jetties, as is evident by the significant offset in shoreline position from the west
side of the harbour to the east (over 300 m).
VO
•e
w '
NenvcasOe
..
• ® West Transport Potential
❑ East Transport Potential
KUA aWage Climate Lemtput Location
kill
Summary of Natural Hazards
• 100-year Erosion Rate (Stable Slope not included):
Start End 100-year Erosion Rate Bluff Crest or
(lat, long) flat, long) (m/year) Waterline
43.8956,-78.5759 43.8965,-78.4836 0.59 Bluff Crest
43.8965,-78.4836 43.9033,-78.4591 0.17 Bluff Crest
43.9033,-78.4591 43.9134,-78.4132 0.41 Bluff Crest
43.9134,-78.4132 43.9166,-78.408 0.29 Waterline
43.9202,-78.3955 43.9229,-78.3889 0.29 Waterline
43.9229,-78.3889 43.9282,-78.3803 0.2 Bluff Crest
43.9308,-78.3605 43.936,-78.3355 0.2 Bluff Crest
43.936,-78.3355 43.9372,-78.3337 0.29 Waterline
43.9384,-78.3286 43.9409,-78.3019 0.2 Bluff Crest
• 100-year Flood Level and Flood Hazard Limit (including wave uprush):
Start End 100-year Flood Level Flood Hazard
(lat, long) (lat, long) (m IGLD85') (m IGLD85')
43.8965,-78.5766 43.8973,-78.5718 +76.01 +77.67
43.8973,-78.5718 43.8958,-78.5656 +76.01 +77.77
43.8958,-78.5656 43.8961,-78.5567 +76.01 +77.85
43.8961,-78.5567 43.9045,-78.4563 +76.01 +77.77
43.9045,-78.4563 43.9335,-78.3393 +76.01 +77.77
1020.01 Lake Ontario p.3
Shoreline Management Plan
43.9335,-78.3393 43.9406,-78.3032 +76.01 +77.86
43.9406,-78.3032 43.9408,-78.2913 +76.01 +77.77
• Dynamic Beach(es):
Start End 100-year Erosion Rate Dynamic Beach Name
(lat, long) (lat, long) (m/year) or Stable
43.9166,-78.408 43.918,-78.4046 0.2 Wesleyville Beach
43.918,-78.4046 43.9191,-78.4003 0.29 Wesleyville Beach
43.9191,-78.4003 43.9195,-78.3975 0.2 Wesleyville Beach
43.9195,-78.3975 43.9202,-78.3955 0.29 Wesleyville Beach
43.9282,-78.3803 43.9299,-78.3731 0.2 Willow Beach
43.9299,-78.3731 43.9302,-78.3681 0.29 Willow Beach
43.9302,-78.3681 43.9308,-78.3605 0.2 Port Britain Road
43.9372,-78.3337 43.9384,-78.3286 0.2 Unknown
43.9409,-78.3019 43.9409,-78.2926 Stable Port Hope West Beach
• Wave climate -1 km offshore, west portion (output location W6a):
ARI (years) Depth (m) Hs (m) DIR (deg) Tp (s)
5 12.5 4.03 207 9.5
10 12.5 4.20 207 9.5
25 12.5 4.59 205 10.0
50 12.5 4.77 205 10.0
100 12.5 4.94 205 10.0
• Wave climate
-1 km offshore, east portion (output location W6b):
ARI (years) Depth (m) Hs (m) DIR (deg) Tp (s)
5 12.2 4.34 210 9.5
10 12.2 4.51 210 9.5
25 12.2 4.90 208 10.0
50 12.2 5.06 208 10.0
100 12.2 5.22 208 10.0
Infrastructure and Ecosystem Threats
• Jetties at Graham Creek are at risk of breaching at their structure roots (north of
composite sections).
• Boulton Street and Bond Head Parkette threated by erosion due to sediment deficit.
• Bond Head Bluffs: high erosion rates and large gullies threaten homes close to the bluff
edge.
• West rail line (CN and CP) entering Port Hope is at the crest of an eroding bluff.
Shoreline Management Recommendations
• Sediment bypassing from west fillet beach at Graham Creek to sediment starved
shoreline fronting Bond Head Parkette and Boulton Street.
• Bond Head Bluffs: Avoid further development on hazardous lands. Monitor proximity
of bluff crest to existing development and slope stability. Relocate homes at risk.
• Conservation Authority should regularly update hazard mapping at Bond Head to
account for latest toe of slope, slope stability, and erosion. The 2020 hazard mapping
must be updated frequently.
1020.01 Lake Ontario p.4
Shoreline Management Plan
• Maintain naturally eroding bluff environments. Avoid rezoning agricultural land for
residential development along gully dominated shoreline.
• Relocated buildings along high bluff environments susceptible to erosion and slope
stability hazards.
• Implement floodproofing measures for development on low lying lands adjacent to the
lake (Port Granby, Port Britain).
• Monitor rail line west of Port Hope and upgrade shore protection as required.
• West Beach at Port Hope would benefit from dune and vegetation restoration to stabilize
the back beach and enhance local habitat.
• Mechanical bypassing of sediment from Port Hope West Beach to East Beach to avoid
sedimentation in the navigation channel.
Use Disclaimer
The information in this reach summary was prepared for the Central Lake Ontario Conservation Authority, the Ganaraska
Region Conservation Authority, and the Lower Trent Region Conservation Authority. If used by a third party, they agree that
the information is subject to change without notice. Zuzek Inc. and SJL Engineering Inc. assume no responsibility for the
consequences of such use or changes in the information. Under no circumstance will Zuzek Inc. or SJL Engineering Inc. be
liable for direct, indirect, special, or incidental damages resulting from, arising out of, or in connection with the use of the
information in this summary by a third party.
1020.01 Lake Ontario p.5
Shoreline Management Plan
Attachment 3 to Report PDS-054-21
ciffft"11
October 14, 2021
Small Craft Harbours - Regional Director
Fisheries and Oceans Canada
501 University Cres
Winnipeg MB R3T 21\16
Email: Jacqueline.blanchette(o)_dfo-mpo.gc.ca
Dear Ms. Blanchette,
Re: Maintenance and Repair of Federal Piers at Bowmanville Harbour
The piers (breakwater structures) at Bowmanville (Port Darlington) Harbour are
federally owned (see attached letter). Recently two studies have been completed in
partnership with the Central Lake Ontario Conservation Authority (CLOCA) regarding
shoreline erosion and disposition.
The two studies were being undertaken simultaneously. The Lake Ontario Shoreline
Management Plan spanned three conservation authority boundaries from Pickering to
Trenton on Lake Ontario and then a more specific study of the Cedar Crest Beach
Embayment Area to the west of the piers at Bowmanville. The consultant on the
projects made observations and comments on the condition of the west pier at
Bowmanville Harbour as it is lower, less substantial and starting to have breeches along
its length. The first study can be viewed at https://www.cloca.com/lake-ontario-
shoreline-hazard-manag and the second study is attached to the Clarington staff report
at httDs://weblink.clarinaton.net/weblink/0/edoc/340831/PDS-007-21.Ddf.
The first study noted on Appendix A, Page 110 under Reach 4
"The west jetty at Bowmanville Creek is in extremely poor condition and requires
significant repairs and/or upgrades. The structure has limited ability to trap sand
or to dissipate wave energy due to its porosity and low crest. The structure
roundhead which features a navigation light is in good condition."
We are bringing the condition of the west pier to your attention as it needs maintenance
and repair. The piers at Bowmanville are integral to the operation of Port Darlington
Harbour Company owned by Wiggers Custom Yachts, Bowmanville Marina and the
municipal boat launch with serves many recreational boaters and fishers. Clarington
Council has allocated funding for improvements to the municipal boat launch as
recreational fishing is an important economic development and tourism generator. The
trespass of sands from the littoral drift through the western pier affects navigation and
the increase in siltation build up has markedly increased overtime.
The Corporation of the Municipality of Clarington, 40 Temperance Street, Bowmanville, ON L1 C 3A6
1-800-563-1195 1 Local:905-623-3379 1 info@clarington.net I www.clarington.net
Page 2
Please let us know the schedule for when the repairs will be undertaken.
Yours sincerely,
Faye Langmaid
Manager of Special Projects
Planning and Development Services
FL*av
Attachment 1- Letter from Fisheries and Oceans Canada
Cc: Steve Brake, Director of Works
Ryan Windle, Director of Planning and Development Services
Lindsey Park, MPP
David Piccini, MPP
Erin O'Toole, MP
Chris Darling, CAO, CLOCA
Attachment 1
Fisheries and Nches at
oceans Canada Oc6ans Canada
Small Craft Harbours
Ports pour petits Warm
Contra and Arctic Reglan
R6gion du Cantle at de I'Arclpue
P-O- Sox 85120
C.P. 65120
3027 Harveater Road
3027. chemin Harvester
Suite 506
Bureau SW
Gurlingtor% 6rdarlo
Burlington. Ontario
UR 4K3
UR 4K3
TEL W5]889-4=
TEL t905)GX-4=
FAX (905) 639-5975
FAX [ap5] 639ZO75
04 January 2002
Corporation of the Municipality ofClarington
40 'reinperance Street
Bowmanville, Ontario
LIC 3A6
Attention: Ms. Cynthia Strike, Planner
Community Planning Branch
:Y14
Jr1s�i d 2002
NAIIAIL�fI';IIkY01-Cl-fdi11610N
k�l.r�i',•tifil• '-k'1d;Ilbl!:id!
111ld 15.2.1
Dar f k Ar frr rrferom
5882 "l3" &nvnianville
Dear Ms. Strike:
Ile: Sinn]] Craft Harbours Facility: Bowmanville, Ontario
Receipt of your letter, dated November 30, 2001, is hereby acknowledged with thanks.
In answer to your query, the following is confirmed:
■ The federal Crown has fee simple ownership of the breakwater structures; and
• Subject to a reversionary interest in favour of the Provincc of Ontario, title to the land
upon which the breakwater structures are located (Parts 1 and 2, Plan IOR-880), rests
with the federal Crown,
For further information regarding; the federal property at Bowmanville, please refer to the
following enclosures:
i , Letter: Shipley/Strike, dated October 23, 1995 (minus enclosures);
2. Letter: Blanchard/Stockwell, dated January 21, 1997 (minus enclosures)-,
1 Provincial Order -in -Council, O.C. 652179, date March 7, 1979;
4. Federal Order -in -Council, P.C. 1979-2974, dated November 1, 1979;
5, Plan 10R-880 (referred to in 3 and 4 above);
CanadIII
a
Ms. Cynthia Strike
5882 " D" Bowmanville
January 4, 2002
Page 2
b, Grant of Easement, Instrument No. 125392 (The Port Darlington Harbour Company to
the federal Crown), over Part 1, Plan IOR- 1484;
7. Quit Claim, Instrument No. 120097 (Town of Newcastle to the federal Crown), to Part
1, Plan l OR-1484, and
8. Plan IOR-1484 (referred to in 5 and 7 above),
If we can be of further assistance, please do not hesitate to contact this office,
urs sincerely
D.G. Blanchar�4
Director