Chapter A - Introduction - City of Pickering

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of a comprehensive wetland monitoring assessment and analyses as detailed in this MESPA report. 5.0 STUDY AREA SUBWATERSHEDS As previously noted, the following five subwatersheds drain the MESP Study Area: Brougham Creek, Urfe Creek, Ganatsekiagon Creek, West Duffins Creek and Whitevale Creek. Figure A2.2 illustrates the extent of each of these subwatersheds in the MESP Study Area. A brief description of each subwatershed is provided below. Further details are outlined in the MESP Phase 1 Report (August 2008). From east to west the MESP Study Area subwatersheds include: • Brougham Creek is a subwatershed located within the East Duffins Creek Subwatershed. A small portion of its drainage catchment is located in the northeast corner of the MESP Study Area, east of Brock Road and west of Sideline 16. Brougham Creek originates on the glacial till plain that overlies most of the MESP Study Area. Within the MESP Study Area, Brougham Creek is classified as small riverine warm water system. Further downstream, before its confluence with Spring Creek, it is classified as small riverine cold water system. Within the Brougham Creek subwatershed, the dominant existing land use is agricultural, with natural areas interspersed. Less than 5% of the land use is urbanized. The majority of the riparian cover along Brougham Creek within the MESP Study Area is forest, with some pockets of meadow and wetland. This subwatershed drains surface flows from approximately 80 hectares of the MESP Study Area. • Urfe Creek is a large tributary subwatershed of Duffins Creekof Ganatsekiagon Creek, which discharges into East Duffins Creek downstream of the MESP Study Area. A large portion of its drainage catchment is located within the MESP Study Area, west of Sideline 16 and east of Sideline 22. Urfe Creek originates on the glacial till plain that overlies most of the MESP Study Area below which it flows over the shoreline of an ancient lake (glacial Lake Iroquois) and on through the lake’s beach deposits. The valley of Urfe Creek is dominated by mature mixed and coniferous forest, interspersed with thicket, wetland and meadow. Several areas show evidence of past disturbance associated with agricultural land uses. This subwatershed drains surface flows from approximately 650 hectares of the MESP Study Area. • Ganatsekiagon Creek originates on the glacial till plain, that overlies most of the MESP Study Area, immediately before it flows over the shoreline of Lake Iroquois and on through the lake’s beach deposits. A large portion of its drainage catchment is located within the MESP Study Area, west of Sideline 22 and east of Sideline 26. The Sernas Group Inc., Stonybrook Consulting Inc. December 2011, Revised February 2013 Master Environmental Servicing Plan Amendment SPL Beatty, Bird and Hale Limited, Earthfx Inc. 07161 Seaton Community, City of Pickering AMEC Earth & Environmental, R.J. Burnside A-8 Amos Environment + Planning
Within the MESP Study Area, Ganatsekiagon Creek becomes a third order stream before its confluence with Urfe Creek. This subwatershed drains surface flows from approximately 950 hectares of the MESP Study Area. • Whitevale Creek originates on the glacial till plain that overlies most of the MESP Study Area, and discharges to West Duffins Creek at Taunton Road. Its entire drainage catchment is located within the MESP Study Area, west of Sideline 26 and east of North Road. This subwatershed drains surface flows from approximately 500 hectares of the MESP Study Area. • West Duffins Creek originates north of the MESP Study Area, on the Oak Ridges Moraine. As it flows downstream, it cuts deeply into the till plain. Near the southern boundary of the MESP Study Area, West Duffins has cut through the Lake Iroquois shoreline. Within the MESP Study Area, West Duffins Creek is a fifth order watercourse, picking up drainage from Whitevale Creek and a number of minor tributaries and drainage gullies. The main channel occurs in a large, well-defined forested valley, with small pockets of meadow and wetland. To the west of the main channel along the MESP Study Area boundary is an Agricultural Preserve. This subwatershed drains surface flows from approximately 800 hectares of the MESP Study Area. 6.0 MASTER ENVIRONMENTAL SERVICING PLAN (MESP) 6.1 PHASE 1 MESP REPORT, AUGUST 2008 In August 2008, the Phase 1, Existing Conditions MESP Report (Phase 1 Report), was submitted to the City and TRCA. The Phase 1 Report documents existing conditions and analyses including the review of background studies, discussions with agencies and fieldwork completed on geology, hydrogeology, hydrology, hydraulics, terrestrial resources at future road crossings, aquatic resources, fluvial geomorphology, municipal servicing, transportation and community facilities planning. Presentation of the Phase 1 Report findings were made to the public at the 2 nd Public Information Centre held on January 10, 2008. The report findings were also presented to the MESP Oversight Committee on August 13, 2008. Comments received from the TRCA on the Phase 1 Report were reviewed and addressed through subsequent discussions and during the preparation of this Phase 2 MESPA Report. The Sernas Group Inc., Stonybrook Consulting Inc. December 2011, Revised February 2013 Master Environmental Servicing Plan Amendment SPL Beatty, Bird and Hale Limited, Earthfx Inc. 07161 Seaton Community, City of Pickering AMEC Earth & Environmental, R.J. Burnside A-9 Amos Environment + Planning
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COMMENT Reg”, should be removed.
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Chapter A - Introduction - City of Pickering

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