Mud Lake Subwatershed Assessment
This project will develop a plan that identifies several stormwater best management practices (BMPs) for the City of St. Bonifacius and surrounding rural areas. Implementation of these BMPs will improve water quality in Mud Lake and Halsted's Bay. A watershed model (EPA-SWMM and P8) will be developed to determine existing phosphorus and sediment loading from the City of Bonifacius and adjacent rural areas draining to Mud Lake. Model output will be used to identify several potential locations for stormwater BMPs throughout the city and surrounding areas. Preliminary designs for each practice will be developed to determine size, cost, and feasibility. A final planning level report will be produced that summarizes the methods and results of the modeling analysis and recommended rural and city stormwater BMPs.
Nicole Clapp
This project will result in an inventory and inspection of four drainage ditches in Blue Earth County.
A subwatershed retrofit assessment for the City of St. Bonifacius and surrounding rural areas was completed. A list of approximately 40 BMPs were identified and incorporated into the report. BMPs include retrofitting existing stormwater ponds, wetland restorations, agricultural BMPs, and the use on in-line alum treatment.
The model was successfully developed and updated to inform our understanding of watershed phosphorus loading.
The study generated a list of approximately 40 total BMPs (before cost-benefit prioritization). After cost-benefit analysis, this list was reduced to approximately 20 high return on investment priority projects. Both lists are incorporated into the final report.
A final report has been assembled that identified approximately 20 BMPs that are priorities for implementation based on their cost benefit analysis (cost/lbs p removed). This report has been circulated to our City partners and will facilitate implementation of stormwater BMPs in the Mud Lake subwatershed.
LOCAL LEVERAGED FUNDS