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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 municipal drains therefore establishment of riparian corridors should consider future maintenance activities. (refer to engineers report and drainage BMP recommendations) Little Marsh Drain currently undergoing section 78 engineers report; good time to implement BMP recommendations 3. Boulton Ditch Drain measures to establish and enhance buffer should be considered to reduce sediment and contaminant loads from adjacent land use (road on west, agriculture on east) before outletting to Lake Erie. watercourses are managed as municipal drains therefore establishment of riparian corridors should consider future maintenance activities (refer to engineers report and drainage BMP recommendations) very high riparian-wetland restoration suitability along watercourse between fragmented natural areas high suitability for infilling and enhancement of unevaluated wetland east and west of Boulton Ditch Drain 130 restoration suitability mapping indicates high enhancement suitability of existing uplands, primarily in the northeast corner of subwatershed. This would connect existing natural areas to adjacent areas in adjoining subwatersheds creating larger contiguous natural areas that would support a wider diversity of flora and fauna 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 Recommended Action for Public and Private Lands NPCA Lake Erie North 1. Regional Road 3 (LBMb): This section of watercourse is managed as a municipal drain; Furry Drain. It Shore Geomorphic has been channelized and lacks any depositional features along the stream bed which indicate little flow Assessment Study (NPCA diversity within the channel. Bank instability is present in the form of bare soil extending up the steep bank, and 2009b) 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 that deep rooted vegetation can become established along the banks and stabilize the soil. The presence of bank slumping usually indicates that vegetative roots are too shallow to stabilize the bank. Water quality should

LAKE ERIE NORTH SHORE WATERSHED PLAN continue to be monitored within this watershed. Monitoring the accumulation of sediment along the channel bed can be done by the use of sediment traps throughout the watercourse. Projects to prevent and limit further development of rills adjacent to the watercourse should be implemented. Some examples include grassed waterways, chute spillways, tile drainage outlets, and proper tillage and cropping practices (OMAFRA, 1997a, and OMAFRA, 1997b). Alternatives to traditional drainage design, such as wetland creation, floodplain development, and increasing channel curvature should also be considered. All recommendations should be discussed with the Drainage Superintendent. 2. Rymer Road (LBMb/LBMc): This section of watercourse is managed as a municipal drain; Chalmers Dickout Drain. It has been channelized and lacks any depositional features along the stream bed which indicate little flow diversity within the channel. 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. A number of small tributaries and possibly rills/gullies exist along the watercourse. The riparian buffer along this reach is small, especially adjacent to the manicured lawn and therefore habitat and shading over the stream will be impacted. Dense vegetation within the channel was noted during a site visit in 2008. Measurements taken at channel cross sections would indicate that the watercourse at this field site is moderately entrenched 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 that deep rooted vegetation can become established along the banks and stabilize the soil. Projects to prevent and limit further development of rills adjacent to the watercourse should be implemented. Some examples include grassed waterways, chute spillways, tile drainage outlets, and proper tillage and cropping practices (OMAFRA, 1997a, and OMAFRA, 1997b). Monitoring the accumulation of sediment along the channel bed can be done by the use of sediment traps throughout the watercourse. Alternatives to traditional drainage design, such as wetland creation, floodplain development, and increasing channel curvature should also be considered. All recommendations should be discussed with the Drainage Superintendent. 3. Regional Road 3 (LBMb-2): This section of watercourse is managed as a municipal drain; Furry 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 bank. 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. Dense vegetation along the channel bed was noted during a site visit in 2008. A number of small tributaries and possibly rills/gullies exist along the watercourse. The riparian buffer along the left bank is small and therefore habitat and shading over the stream will be impacted. Measurements taken at channel cross sections would indicate that the watercourse at this field site is moderately entrenched 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 that deep rooted vegetation can become established along the banks and stabilize the soil. Projects to prevent and limit further development of rills adjacent to the watercourse should be implemented. Some examples include grassed waterways, chute spillways, tile drainage outlets, and proper tillage and cropping practises (OMAFRA 1997a, and OMAFRA, 1997b). Monitoring the accumulation of sediment along the channel bed can be done by the use of sediment traps throughout the 131

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