Lake Magda Nutrient TMDL FINAL

This Total Maximum Daily Load (TMDL) study addresses a nutrient impairment in Lake Magda (27-0065). The goal of this TMDL is to quantify the pollutant reductions needed to meet State water quality standards for nutrients. Lake Magda is located in the City of Brooklyn Park, Hennepin County, Minnesota, in the Shingle Creek watershed. It is a neighborhood lake that provides primarily aesthetic values. The drainage area to the lake is 62 acres of fully developed urban and suburban land. The drainage area is entirely in the City of Brooklyn Park. Lake Magda outlets into wetland on the west side of TH 169, then through storm sewer to Eagle Creek. Eagle Creek is a tributary to Shingle Creek, which ultimately discharges into the Mississippi River. Water quality is considered poor and not supportive of recreational activities, with frequent algal blooms. Wasteload and Load Allocations to meet State standards indicate that a nutrient load reduction of 69 percent would be required to consistently meet standards under average precipitation conditions. Internal load management and reduction of nonpoint sources of phosphorus in the watershed by retrofitting Best Management Practices (BMPs) would have the most impact on reducing phosphorus load and improving water quality in Lake Magda