Wikipedia EN Thornapple River (Michigan)
The Thornapple River (Ottawa: Sowanquesake, "Forked River") (GNIS ID #1075813) is an 88.1-mile-long (141.8 km) tributary of Michigan's longest river, the Grand River. The Thornapple rises in Eaton County, Michigan and drains a primarily rural farming area in Central Michigan. It joins the Grand in Ada, Michigan, 10 miles (16 km) east of Grand Rapids.
Source: Wikipedia https://en.wikipedia.org/wiki/Thornapple_River