Clearwater River (UM Basin) - CD #44 to Lake Betsy Bacteria and Lake Nutrients (Clear, Louisa, Scott, Betsy, Union and Marie Lakes): TMDL Project

This project addresses the following seven impairments in the Upper Clearwater River Watershed located in the Upper Mississippi River Basin of Minnesota:

  • Six lake nutrient impairments;
  • Clearwater River (from County Ditch #44 to Lake Betsy): 1 fecal coliform bacteria impairment.

The Clearwater River Watershed District (CRWD), in cooperation with Wenck Associates Inc. and the MPCA, completed this TMDL study in 2009.  It was subsequently approved by the EPA in January of 2010.  MPCA has approved the watershed wide Implementation Plan making the CRWD eligible to apply for federal 319 funds and state CWLA funds that can be used for restoration projects and BMPs.  Lake reduction goals for Phosphorous range from 26 to 90% to restore lakes to state standards.  Required bacteria reductions for the Clearwater River range from 35 to 92%. To reduce phosphorous levels in the lakes, both internal and external load reductions are required. The primary strategies for bacteria reductions will focus on riparian exclusion and agricultural BMPs.

Other CRWD TMDL studies

Map and location

Clearwater watershed is located in south central portion of the Upper Mississippi Basin, near St. Cloud.


TMDL report and implementation plan

Other documents


Contact MPCA about this project