Minnesota's Impaired Waters and TMDLs
The lower 11.2-mile segment of the Chippewa River, from Dry Weather Creek to its confluence with the Minnesota River near Montevideo, was listed as impaired due to elevated concentrations of un-ionized ammonia. The TMDL report was approved by the EPA on October 29, 2004. The impaired segment of the Chippewa River was delisted in 2006 due to reductions in un-ionized ammonia from the Montevideo waste water treatment plant.
Map and location
The Chippewa River is located in the Minnesota River Basin.
For a map of this delisted segment of the Chippewa River, see the Map of Approved TMDLs in Minnesota.
TMDL report and implementation plan
TMDL report approved by EPA on October 29, 2004.
- Chippewa River Un-ionized Ammonia TMDL Report (wq-iw7-03e)
- Fact Sheet (wq-b3-09)
- EPA Approval Letter (wq-iw7-03g)
Minnesota Pollution Control Agency
1420 East College Drive
Marshall, MN 56258