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Home My WebLink AboutPD-236-86 TOWN OF NEWCASTLE r �( REPORT File # #�aRes. • , - By-Law # MEETING: General Purpose and Administration Committee DATE: Monday, October 6, 1586 REPORT #: PD-236-86 FILE #: PLN 16.6.1 SUBJECT: PROVINCIAL GOVERNMENT FLOODPLAIN CRITERIA SPECIAL POLICY AREAS RECOMMENDATIONS: It is respectfully recommended that the General Purpose and Administration Committee recommend to Council the following: 1. THAT Report PD-236-86 be received; and 2. THAT Council resolves to request the Central Lake Ontario Conservation Authority to adopt a "Special Policy Area Statement" for the watersheds of the creeks identified by Staff Report PD-236-86 so that the regulatory flood is reduced to reflect the 1: 100 year storm; and 3. THAT Council further resolves that any necessary studies to establish the flood line for such reduced regulatory flood should be at the expense of the development proponents except where funding may be available from senior levels of government; and 4. THAT a copy of Staff Report PD-236-86 and Council 's resolution be forwarded to the Central Lake Ontario Conservation Authority. . . .2 REPORT NO. : PD-236-86 Page 2 BACKGROUND: The Provincial Government's Policy Statement on Floodplain Criteria, which was released jointly by the Ministries of Natural Resources and Municipal Affairs and Housing in September, 1982, outlines a number of floodplain criteria and policies to be used as the basis for implementing floodplain management in the Province. Policy Number 1 in the Policy Statement defines the greater of the Regional Storm Flood or the One Hundred Year Storm Flood as the Regulatory Flood. The Regulatory Flood is the flood against which protection is to be provided and upon which floodplain delineations are to be based. Policy Number 3 in the Policy Statement notes that in certain circumstances, however, the strict application of Floodplain Regulations may not be feasible. Such a situation would occur where a substantial proportion of the commercial , retail , industrial or residential development in a community it located in the floodplain. and the rehabilitation, redevelopment or replacement of structures within the floodplain is considered essential to the continued viability of the community. In exceptional circumstances such as this, a Municipality may request the designation of the built-up area in the floodplain as a Special Policy Area. Within a Special Policy Area, a higher than normal degree of flood risk is accepted, and the Conservation Authority uses a lower standard of protection when considering applications for construction or the placing of fill . In February, 1983, the Central Lake Ontario Conservation Authority requested the Town of Newcastle to define any areas within our boundaries which we consider would warrant special recognition under Policy Number 3. Within its watershed, C.L.O.C.A. generally uses the Regional Storm Flood as the Regulatory Flood. . . .3 REPORT NO.: PD-236-86 Page 3 Staff reviewed the floodplain mapping for all of the urban areas and hamlets within the Town and, in Staff Report PD-77-83 which was considered by Committee at its meeting of May 16, 1983, noted that there is very little urban type development within floodplain lands, and none which warrants special attention. Staff recommended that C.L.O.C.A. be advised that no areas within the Town of Newcastle would, in the Town's opinion, qualify for Special Policy Area Status. Committee adopted the recommendation in the Staff Report, which was subsequently endorsed by Council . COMMENT: As the result of increasing development pressures on lands located within the Regional Storm floodplain in the vicinity of Highway 401 in and around the Bowmanville Urban Area, Staff have recently reviewed the possibility of designating the watersheds of a number of creeks as Special Policy Areas where the regulatory flood would reflect the 100 year storm. The creeks * examined by Staff, as shown by Attachment No. 1, are as follows: - Darlington Creek and Westside Creek watersheds north of the Canadian National Railway to Baseline Road. This would include lands to the north and south of Highway No. 401 which are designated "Industrial" in the Official Plan. - Bowmanville Creek watershed north of Highway No. 401 to a point some 375 metres north of Baseline Road. This would increase the area available for development for lands designated "Commercial " and "Residential " in the Official Plan. - Soper Creek watershed north of Highway No. 401 to a point some 175 metres north of Baseline Road. This would include lands adjacent to Industrially-designated lands south of Baseline Road, and an existing apartment building located north of Baseline Road. . . .4 REPORT NO.: PD-236-86 Page 4 Given the Official Plan designations for these areas and the unique constraints created by man-made structures which greatly increase the extent of floodplains, Staff feel that special consideration should be given to reducing the regulatory flood to reflect the 1: 100 year storm. C.L.O.C.A. Staff have advised that development permitted by the reduced Regulatory Flood will be required to incorporate special flood-proofing measures and will still be subject to the Authority' s Fill and Construction Regulations. Staff recognize that studies will be required to establish the flood line for such reduced regulatory flood, and suggest that such studies should be at the expense of development proponents except where funding may be available from senior levels of government. It is therefore recommended that Council resolve to request the Central Lake Ontario Conservation Authority to adopt a "Special Policy Area Statement" for the indicated watersheds to reduce the Regulatory Flood to reflect the 1: 100 year storm, and that any necessary studies to establish the reduced regulatory flood line should be at the expense of development proponents except where funding from senior levels of government may be available. Respect fulytaismi tied, T.T. Edwards, NI.C.I .P. Director of Planning JAS*TTE*j ip *Attach. September 25, 1986 LOT 16 LOT 15 LOT 14 LOT 13 LC T 12 LOT I I LOT 10 LOT 9 �R Z 0 R-3 M2-1 0 tn Ld Lli R2 L 21 10 z . ........ Z A 0 Rl R2 SOPER 0 (H R4. CREEK Ep M1-4 HIR. BASELINE ROAD .. ... .. WEST SIDE C7-1 ............... M2 (H)C5 CREEK ....... (H)MI . 401 I HwAY N° A M2 tL EP z P ILJ BOWMAHVILL E Z : C7-2 I REEK M2 MI C z 0 A o M2 U A z E z �M 3 0 z C5-2 p A A LL- z W M2-2 A y m A m M3-1 EP M3-1 k PROPOSED SPECIAL POLICY AREAS: REGULATORY FLOOD ADDENDUM TO STAFF REPORT PD-236-86 LOT 22 LOT 21 LOT 20 LOT 19 LOT 18 LOT 17 J I A•19 a Q J I 0 O l W 401 _O 1 z Al i s 00 I I � I z cc,NR � � I 1 z w Y m ( I I I .N I LAKE E ONTAR/O RROPOSED SPECIAL POLICY AREAS: REGULATORY FLOOD