Shiawassee National Wildlife Refuge is provides a habitat for migratory waterfowl. Known locally as the "Shiawassee Flats," the refuge lies in the Saginaw Bay watershed, historically one of the largest and most productive wetland ecosystems in Michigan. Four rivers converge on the refuge - the Tittabawassee, Flint, Cass, and Shiawassee. The refuge headquarters is 5 miles south of Saginaw. From I-75, take the Bridgeport exit and turn west onto Dixie Highway; go 1/2 mile. Turn left onto Fort Road, and go about 2 miles. Turn west onto Curtis Road, and go about 4 miles to refuge headquarters. The Green Point Environmental Learning Center is in the southwest corner of Saginaw. From I-75, take the M-46 West/Holland Ave. exit, and go 5 miles. Turn left onto Michigan Avenue, and go 1 mile. Turn left onto Maple Street, and go 1/2 mile to the Center.