Fish Lake is a headwater of the Watonwan River. The lake is a regionally known fishery due to its unusual depth >20', lack of a mud bottom, and a naturally reproducing smallmouth bass fishery. The watershed has many tile drainage systems that are a source of nutrients to the lake. Woodchip bioreactors will be installed to reduce nitrogen from all tile outlets entering Fish Lake. This will help achieve the goal of a 40% reduction in Biological Oxygen Demand (BOD) in the Minnesota River.
This program is a part of a comprehensive clean water strategy to prevent sediment and nutrients from entering our lakes, rivers, and streams; enhance fish and wildlife habitat; protect groundwater and wetlands. Specifically the Wellhead Protection Conservation Easement program is targeted to protect drinking water through the Reinvest in Minnesota Program (RIM).