The Lower Mississippi River Watershed Management Organization (LMRWMO) is located in the southeastern Twin Cities metropolitan area. The watershed encompasses approximately 35,493 acres and includes 88 lakes and wetlands, four streams, and the Mississippi River. The LMRWMO Total Maximum Daily Load (TMDL) and Watershed Restoration and Protection Strategy (WRAPS) Report is a project that is addressing the water quality and pollution sources of five lakes in the watershed.
Rogers Lake is currently meeting state water quality standards and was included in this study to assess methods for protection. Thompson Lake, Lake Augusta, and Sunfish Lake are on the Minnesota Pollution Control Agency’s 303(d) list of impaired waters due to excess nutrients (phosphorus). Pickerel Lake was added to the 2014 Proposed 303(d) Impaired Waters List in 2013 due to excess nutrients, but was removed in early 2014. Excess nutrients, like phosphorus, can stimulate the growth of nuisance algal blooms in the summer which restrict recreational activities.
The goal of this project was to quantify pollutant reductions needed to meet Minnesota’s water quality standards and to develop strategies for protection and restoration of these lakes.
Map and location
The LMRWMO watershed in northern Dakota and southern Ramsey Counties includes the cities of Lilydale, South St. Paul, Sunfish Lake, and West St. Paul, and portions of the cities of Inver Grove Heights, Mendota Heights, and St. Paul. The watershed is located within the Mississippi River - Twin Cities Watershed of the Upper Mississippi River basin.
TMDL report and implementation plan
- Lower Mississippi River WMO project: Final TMDL and WRAPS
- Lower Mississippi River WMO TMDL: EPA approval letter (Nov. 24, 2014)
- Sunfish Lake fact sheet
- Lake Augusta fact sheet
- Pickerel Lake fact sheet
- Rogers Lake fact sheet (wq-iw8-43a5)
Established in 1985, the LMRWMO provides a valuable forum for the member cities to evaluate and resolve drainage issues within the watershed.
Watershed Project Manager
Minnesota Pollution Control Agency
520 Lafayette Road
St. Paul, MN 55155
Lower Mississippi River Watershed Management Organization
c/o Dakota County Soil and Water Conservation District (SWCD)
4100 220th St. West, Suite 102
Farmington, MN 55024