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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 Figure 15b: Municipal Drains-East 86

LAKE ERIE NORTH SHORE WATERSHED PLAN In the Lake Erie North Shore watershed, over 61 percent of the watercourses have been classified as municipal drains. The drainage classifications range from Class B to Class F; the majority have a Class F designation (Table 6). Table 6: Municipal Drains Class Drain Name Subwatershed B Point Abino Drain-main channel Point Abino Drain B Wignell Drain Wignell Drain C Bearss Drain Bearss Drain C Casey Drain-main branch Casey Drain C Beaverdam Drain-south portion Beaverdam Drain P.C C Silver Bay Drain Bearss Drain D Furry Drain Lowbanks Drain E Bay Beach Area Drain Bay Beach Area Drain E Little Marsh Drain Lowbanks Drain E Boulton Ditch Drain Lowbanks Drain E Eagle Marsh Drain-main branch Eagle Marsh Drain F Point Abino Drain-northern branch Point Abino Drain F William-Michael Drain Bearss Drain F Neff Drain Bearss Drain F Oil Mill Creek Drain Oil Mill Creek Drain F Beaverdam Drain-northern portion Beaverdam Drain P.C F Michener Drain Wignell Marsh Drain F Central Park Drain Welland Canal South F Bessey Branch Drain Eagle Marsh Drain F Casey Drain: East, West and North Branches Casey Drain F Hoover Creek Drain Hoover Drain F H.E. Dickout Drain Lowbanks Drain F Chalmers Dickout Drain Lowbanks Drain In general, Municipal Drains are designed to facilitate in land drainage, prevent flooding and move water quickly through the watercourse (they are dredged and straightened, and there is no connection between the floodplain and the channel), therefore it would imply that the watercourses would be classified as flashy (VanRiezen 2010). Some factors that influence the shape of the hydrograph for the watercourses in the Lake Erie North Shore watershed suggest that the majority of the watercourses actually are not flashy. Physical characteristics found during the NPCA Lake Erie North Shore Geomorphology Study (2009b) would suggest that most of the watercourses have some degree of being sluggish. 1. Eight of the eleven designated Municipal Drain subwatersheds have wetlands within their boundaries which results in the storage of water. 2. The surrounding topography is flat which will affect the time it takes for the water to get to the watercourse by direct runoff. 3. Vegetation type, impervious area, as well as soil type within the subwatershed will influence the shape of the hydrograph. If the water cannot infiltrate into the ground then it will increase the direct runoff and produce a flashy hydrograph. The major land uses within the subwatersheds include monoculture, rural landuse, wooded areas, mixed agriculture, and built-up areas (impervious). The majority of field sites visited had some degree of vegetation in the riparian corridor. 4. Municipal Drain maintenance will control the longitudinal profile of the watercourse (the way in which the stream‟s elevation changes over distance). If 87

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