Title
Resolution to Petition the Washtenaw County Water Resources Commissioner for the Leslie Park Golf Course Streambank Stabilization Project in the Traver Creek Drainage District (Total Cost: $1,050,000.00; City’s Apportionment: $981,540.00)
Memorandum
Attached for your approval is a resolution to petition the Washtenaw County Water Resources Commissioner (WCWRC) to undertake a project to address streambank erosion along a 2000-foot stretch of the Traver Creek drain that traverses through Leslie Park Golf Course. The streambank is exhibiting bank incising with high volumes of sediment being removed and deposited downstream. In addition, there are locations along the stream that experience regular flooding.
The proposed project will alleviate golf course and downstream flooding and address bank erosion, as well as reduce the phosphorus load in Traver Creek, which is tributary to the Huron River. Opportunities for offline native wetlands will be examined for inclusion in potential design solutions. Basin retrofits are also proposed at two existing inline detention basins.
These improvements will reduce the amount of stormwater entering the City's stormwater piping network and reduce contaminant loading to the downstream creeks and the Huron River. The proposed improvements will improve water quality and reduce localized flooding in the project areas.
Nearly 36% of the land draining to the Huron River and its tributaries is impervious, and as a result, stormwater frequently enters the river too quickly, causing localized and regional flooding during certain rain events. These rain events also carry pollutants from impervious areas to the creeks and ultimately the Huron River, reducing water quality. The City falls within the Total Maximum Daily Load (TMDL) area of the Huron River for phosphorus and E. coli from storm water. In addition, there are several creeks that have a creek-specific TMDL for Biota, which is attributed to unstable flow regime...
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