This U. S. Army Corps of Engineers public access site at Lock and Dam #4 (river mile 752. 8) offers observation platforms to view lock operations and is located 2 miles south of Rieck's Lake Park on Highway 35 near Alma, Wisconsin.

The parking area does not accommodate tow vehicles, but street parking nearby can accommodate larger vehicles.

The site provides excellent opportunities for viewing wildlife and migrating birds, particularly tundra swans in fall and spring, and bald eagles during winter months.