National Park Service - Mississippi National River and Recreation Area
111 East Kellogg Blvd., Suite 105
St. Paul, MN 55101
Call us at: 651-293-0200
Did You Know?
At Lake Onalaska, near LaCrosse Wisconsin, the Mississippi River is about 4 miles wide. Mississippi River water held behind Lock and Dam #7 and water held by damming the Black River form this broad reach of the Mississippi River.