Beginning of Wisconsin River, Wisconsin
The Wisconsin River runs through the middle of the state that took its name, and is the states longest river (430 miles). It is called “the hardest working river in America”, as it has more than two dozen hydroelectric dams and many mills along it. It ends at the Mississippi River, at the historic fur trade town of Prairie du Chien. It begins at Lac Vieux Desert, a three-mile long lake that spans the border with Michigan, at the top of Wisconsin.