Thornapple River Watershed Council
Mission: To protect, preserve, and enhance the quality, aesthetic, and recreational value of the Thornapple River Watershed through education, planning, and management.
Watershed Facts
The Thornapple River Watershed (TRW) is the largest subbasin of the Lower Grand River Watershed (lgrow.org)
~100 miles of river
876 square miles of watershed draining to river
742 miles of streams
227 lakes, 7,844 acres of water!
Runs through Barry, Eaton, and Kent counties
Drains into the Grand River then to Lake Michigan
Watershed land use:
52.1% agricultural production
25.8% forest
12.9% other non-production vegetation
3.3% paved road or airport
2.1% low to high density urban
1.5% water
1.5% wetland
Upcoming Events
Annual Thornapple River Cleanup, September
Locations in Ada, Alaska (Caledonia), Middleville, Hastings, and Nashville
You can be an important part of the Thornapple River Watershed. You can help by participating in our annual cleanup and becoming a sponsor!
2025 Cleanup Sponsors
Coming soon!
