Dredge Cut and Island Creation Habitat Rehabilitation and Enhancement Project
St. Paul District
Pool 7, Upper Mississippi River, Miles 703 - 706, La Crosse County, Wisconsin, Congressional District: WI - 3
The lake is nationally recognized as one of the best bluegill and largemouth bass backwater lakes on the Upper Mississippi River and a major staging area for migrating waterfowl. However, sedimentation and aquatic plant growth had virtually eliminated flows through a fishery wintering area near Rosebud Island, creating winter and summer dissolved oxygen problems. Islands in Lake Onalaska had also eroded, leaving the lake subject to increased wave action and turbidity.
- Approximate Acres: 2750
- State(s) Covered: WI
- Land Ownership: Federal
- Management Agency: USFWS
- Management Authority: Refuge
- Dredging channels behind Rosebud Island to provide oxygenated water to the fishery area.
- Constructing three islands in the middle of the lake to reduce wave action.
- The Definite Project Report was completed in August 1988.
- Construction was initiated in February 1989 and completed in July 1990.
- The Operation and Maintenance Manual was completed in September 1998.
- The Initial Project Evaluation Report was completed in September 2004.