Only a small portion (about 7 percent) of the Maumee watershed lies within Michigan’s borders. Michigan is partnering with Indiana, Ohio, the U.S. EPA, and the U.S. Geological Survey to ensure appropriate monitoring of the watershed. Though continued monitoring is needed, initial monitoring and analysis has revealed that certain parts of the Maumee watershed in Michigan have higher phosphorus concentrations than others.

The Michigan Department of Environment, Great Lakes, and Energy is continuing to work with federal and state jurisdictions to develop a coordinated, appropriate monitoring plan for the Maumee River watershed, including tributaries in Michigan.