Leech Lake River

The Leech Lake River is a 50-mile-long river in north-central Minnesota. Flowing eastward from Leech Lake, it acts as a primary tributary and headwaters reservoir for the Mississippi River. The river runs through Cass County and is bordered by the Leech Lake Indian Reservation and the Chippewa National Forest

Source: Wikipedia https://en.wikipedia.org/wiki/Leech_Lake_River