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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 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. 4. Townline Road (LBMb-3): This section of watercourse is managed as a municipal drain; Furry Drain. It 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. Shallow pools and stagnant water is present throughout the field site. Some algae and an oily sheen on the water surface were noted during a site visit in 2008. There was also dense vegetation growing along the channel bed. 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 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). Water quality testing should continue to be monitored in this watershed. 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. 5. Regional Road 3 (LBTa): This section of watercourse is managed as a municipal drain; Little Marsh 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. An oily sheen on the water surface was noted during a site visit in 2008. There was also dense vegetation growing along the channel bed. The lack of large trees adjacent to the channel results in little canopy cover over the channel and also impacts habitat. A number of small tributaries and possibly rills/gullies exist along the watercourse. A crossing through the channel that has no culvert is present at this field site. This can leave the bed and banks more susceptible to erosion and therefore add sediment into the watercourse. Concrete pieces were identified along the right bank indicating that some erosion protection measures have been implemented by the landowner. Recommendations for this site include increasing the amount of large woody vegetation adjacent to the channel to provide cover and habitat for fish, insects, and invertebrates along 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 practises (OMAFRA, 1997a, and OMAFRA 1997b). Water quality testing should continue to be monitored in this watershed. Monitoring the accumulation of sediment along the channel bed can be done by the use of sediment traps throughout the watercourse. A proper crossing with a culvert should be installed to limit bed and bank erosion. Proper bank protection measures should be installed along the right bank to ensure adequate stabilization. All recommendations should be discussed with the Drainage Superintendent. 132

LAKE ERIE NORTH SHORE WATERSHED PLAN 6. Regional Road 3 (LBTa-2): This section of watercourse is managed as a municipal drain; Little Marsh Drain. It has been channelized and lacks any depositional features along the bed which indicate little flow diversity within the channel. Relatively deep unconsolidated sediment is deposited along the channel bed. An odour was emitted from the sediment when it was disturbed which could be caused by decaying vegetation. 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. A full reforestation project has been completed on this property in partnership with the Niagara Peninsula Conservation Authority (completed in 2008). 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 watercourse. All recommendations should be discussed with the Drainage Superintendent. 7. Townline Road (LBTa-3): This section of watercourse is managed as a municipal drain; Little Marsh Drain. It has been channelized and lacks any depositional features along the stream bed which indicate little flow diversity within the channel. There are few to no pools along the streambed. 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 and 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. 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. 8. Hutchinson Road (LBTb): This section of the watercourse has been channelized and lacks any depositional features along the stream bed which indicate little flow diversity within the channel. The watercourse along this field site is not managed as a municipal drain. The small buffer zone along the right bank, as well as the lack of large trees impact cover and habitat along this channel. Some bank instability is present adjacent to the garage in the form of bare soil extending up the bank. There may also be some slumping occurring as well. 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. The presence of bank slumping usually indicates that vegetative roots are too shallow to stabilize the bank. Proper bank protection measures should be implemented along the right bank to ensure adequate stabilization of the bank adjacent to the garage. Increasing the variety and diversity of native plant species within the buffer zone will provide cover and habitat for fish, insects, and invertebrate along the watercourse. 133

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