The River Raisin is a tributary of the Lake Erie watershed, located in southeastern Michigan. It flows through the city of Monroe and is approximately 30 miles long. The river is known for its historical significance, particularly during the War of 1812, when the Battle of the River Raisin took place in 1813. The river's watershed supports various ecosystems and provides recreational opportunities such as fishing, kayaking, and hiking along its banks. Efforts have been made to improve water quality and restore habitats in the area, benefiting both wildlife and local communities.