Little Rock Lake - Nutrients: TMDL Project

This project addresses one lake nutrient impairment. Little Rock Lake had a bloom of blue-green algae the summer of 2007. MPCA staff conducted air and water quality monitoring during the bloom. Algal toxin (microcystin) samples collected were determined to be a “high health risk” level according to World Health Organization standards. Due to severity of the algae bloom, Little Rock Lake was put on the draft 2008 Impaired Waters List. The Benton County Soil and Water Conservation District (SWCD) is leading this project.

Map and location

Little Rock Lake is located in the Mississippi River- Sartell watershed, which lies in the southeastern portion of the Upper Mississippi basin. 

TMDL report and implementation plan

Other documents

Meetings and events

January 5, 2011, 1:30 to 3:30 or 6:00 to 8:00 pm. Little Rock Lake TMDL Project Public Stakeholder Meeting, Sauk Rapids-Rice Middle School Community Art Center, 901 1st Street South, Sauk Rapids, MN 56379. Presentation on the water quality study result, future goals and implementation strategies discussion. Please see Public Meeting Flyer for more information and driving directions.


Information contact

Margaret Leach, Impaired Waters Coordinator
7678 College Road, Suite 105
Baxter, MN 56425

Gerry Maciej, District Manager
Benton Soil and Water Conservation District
14 West 2nd Avenue
Foley, MN 56329
320-968-5300 Ext. 3
Fax: 320-968-5304