The Flint River drains of Michigan, in Lapeer, Genesee, Shiawassee, Saginaw, Oakland, Tuscola, and Sanilac counties.
The Flint River drains of Michigan, mostly in the counties of Lapeer, Genesee, Shiawassee, and Saginaw. It also drains parts of Oakland, Tuscola, and Sanilac counties.