Crystal Lake is an 89-acre basin located in the Shingle Creek Watershed. The lake’s drainage area is 1,237 acres of fully developed urban and suburban land almost entirely in the city of Robbinsdale, with some contribution from the city of Minneapolis. The Minnesota Pollution Control Agency placed Crystal Lake on the 2002 impaired waters list for aquatic recreation because it exceeds the water quality standard for nutrients. Excess nutrients such as phosphorus from stormwater runoff create poor water quality conditions causing frequent summer algal blooms, which limit recreational activities.
The goal of the Crystal Lake Total Maximum Daily Load (TMDL) report is to quantify the pollutant reductions needed for Crystal Lake to meet state water quality standards. The MPCA is partnering with the Shingle Creek Watershed Management Commission and their consultant, Wenck Associates, Inc. to complete both the Crystal Lake TMDL report and implementation plan.
Map and location
Crystal Lake is in the city of Robbinsdale in the northwestern Twin Cities metro area, Hennepin County. It lies in the Mississippi River - Twin Cities watershed in the Upper Mississippi River Basin.
TMDL report and implementation plan
- Crystal Lake Nutrient TMDL: Five-year review (wq-iw8-07n)
- Final TMDL Report
- EPA Approval Letter (March 25, 2009)
- TMDL Implementation Plan (approved by MPCA on July 7, 2009)
- Local sponsor: Shingle Creek Watershed Management Commission
- Consultant: Wenck Associates
- MPCA: Minnesota’s Impaired Waters and TMDL
Minnesota Pollution Control Agency
520 Lafayette Road N
St. Paul, MN 55155