Category:Thornapple River (Michigan)

Mouth (Ada
Object location 42° 39′ 42.01″ N, 84° 53′ 13.74″ W Kartographer map based on OpenStreetMap. View all coordinates using: OpenStreetMap - Google Maps - Google Earth - Proximityrama info Edit coordinates on Wikidata (discrepancy of 0 meters between the above coordinates and the ones stored on Wikidata)
Headwaters (approximate location SE of Potterville, near Snow Lake)
Object location 42° 35′ 42.43″ N, 84° 42′ 22.18″ W Kartographer map based on OpenStreetMap. View all coordinates using: OpenStreetMap - Google Maps - Google Earth - Proximityrama info Edit coordinates on Wikidata

From the English Wikipedia article on the Thornapple River

The Thornapple River is an approximately 100 mile long tributary of Michigan's longest river, the Grand River. The Thornapple is located in western Michigan. It joins the Grand in Ada, Michigan. The Thornapple, one of the Grand's major tributaries, is about 100 miles (160 km) long. It has headwaters in Eaton County and flows through Barry County before entering the Grand River in Kent County.