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Lake Erie North Shore Watershed Plan - Niagara Peninsula ...

Lake Erie North Shore Watershed Plan - Niagara Peninsula ...

LAKE ERIE NORTH SHORE

LAKE ERIE NORTH SHORE WATERSHED PLAN Hoover Drain Restoration Strategy Over 50 percent of the main channel of Hoover Drain is designated as municipal drain; Hoover Creek Drain is a Class F Drain. The watercourses have not been evaluated in terms of importance for fish habitat and the NPCA does not conduct water quality or BioMAP sampling in this subwatershed. A geomorphic assessment was conducted at one site along the municipal drain in this subwatershed. A lack of any depositional features along the stream bed was noted which indicates little flow diversity within the channel (NPCA 2009b). Land use is primarily agriculture with a strip of residential along the lakeshore. The headwaters commence in Moulton Wetland East PSW and flow south through Bunz Bush and a wetland that is still awaiting evaluation by the MNR. The remaining watercourses in this subwatershed flow through agricultural fields with little to no riparian habitat. The challenge in this subwatershed is the establishment of a sufficient riparian buffer which is imperative in maintaining, protecting and enhancing water quality and fish habitat. Opportunity is present for infilling gaps of natural areas thus reducing the amount of forest edge while increasing interior size resulting in an increased ability to support a larger diversity of flora and fauna. In addition, opportunity exists for the establishment and enhancement of linkages to adjacent natural areas including a core area Moulton West Wetland Complex. These connections would facilitate in the movement of flora and fauna between natural areas. The Hoover Drain Subwatershed Restoration Strategy identifies one zone with specific stewardship and restoration recommendations (Table 11 and Figure 22). 138

LAKE ERIE NORTH SHORE WATERSHED PLAN Table 11: Hoover Drain Subwatershed Restoration Strategy Restoration Opportunities Recommended Restoration Strategies Riparian Wetland Upland and Ecological Linkages 1. headwaters receive cover from wetland therefore priority should be placed on establishing and enhancing riparian habitat south of the Gord Harry Conservation Trail. riparian buffers will help to reduce sediment and cool the water to enhance water quality and fish habitat as well create corridors that will connect fragmented natural areas providing cover for wildlife protect existing wetlands (e.g., create a buffer of trees and shrubs between the wetlands and the agricultural activities) enhance wetlands in areas where the wetness index and soil drainage permit; priority should be given to areas adjacent to existing wetlands(e.g. very high restoration suitability exists between Moulton Wetland West PSW complexes and north section of unevaluated wetland west of watercourse) restoration suitability mapping indicates very high suitability exists for creating a Critical Function Zone (CFZ) between Moulton Wetland West PSW complexes and the northern edge of the unevaluated wetland by means of infilling. This will provide for a variety of critical functions for wetland-associated fauna (e.g. nesting habitat) as well as increase interior size which would support a larger diversity of flora and fauna the main branch south of the Gord Harry Conservation Trail is managed as a municipal drain therefore establishment of riparian corridors(e.g. deep rooted grasses & shrubs) should consider future maintenance activities (refer to engineers report and drainage BMP practice recommendations ) All restoration measures should, where possible, benefit Species at Risk and provincially rare species Carolinian and native species should be used for all projects Project Opportunities NPCA Lake Erie North Shore Geomorphic Assessment Study (NPCA 2009b) Recommended Action for Public and Private Lands 1. Lakeshore Road (HvDMa): This section of watercourse is managed as a municipal drain; Hoover Creek Drain. It has been channelized and lacks any depositional features along the stream bed which indicate little flow diversity within the channel. Bank instability is present in the form of bare soil extending up the steep bank, and possibly slumping. Relatively deep unconsolidated sediment is deposited along the channel bed. Few to no pools exist along the bed but there is stagnant water present throughout the field site. The plant arrowhead, as well as aquatic vegetation in the form of a vine was identified along the bed of the channel throughout the field site. The presence of algae was also noted during a site visit in 2008. The riparian buffer along this reach is poor along the left bank and therefore will influence bank stability. A number of small tributaries and possibly rills/gullies exist along the watercourse. Measurements taken at channel cross sections would indicate that the watercourse at this field site has moderate to minor entrenchment which results in flood waters having limited to no access to the floodplain. Therefore, the energy within the flow is contained in the channel. Recommendations for this site include not grading the channel banks too steep during the dredging process so 139

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