Ambrough Slough Habitat Rehabilitation and Enhancement Project
St. Paul District
Pool 10, Upper Mississippi River Miles 638 - 642, Crawford County, Wisconsin, Congressional District: WI - 3
- U. S. Fish and Wildlife Service (USFWS)
- Wisconsin Department of Natural Resources (WIDNR)
Ambrough Slough is a side channel on the Wisconsin side of the Mississippi River in pool 10, about 5 miles upstream of Prairie du Cien, Wisconsin. The slough enters a 2,500-acre backwater complex of lakes and smaller sloughs. The site lies within the Upper Mississippi River National Wildlife and Fish Refuge. The entire area has experienced a loss of depth from siltation and aquatic plant decomposition. This limits the area of desirable fish habitat. The area is important spawning and rearing habitat for a variety of fish, but this importance is diminishing.
- Approximate Acres: 2746
- State(s) Covered: WI
- Land Ownership: Federal
- Management Agency: USFWS
- Management Authority: Cooperative AgreementApproximate Acres: 259
- Dredging in several of the backwater lakes to provide adequate depth for fish.
- Fresh water will be introduced into Gremore Lake to provide adequate dissolved oxygen levels by both dredging and use of a culvert.
- The Definite Project Report completed in December 2000.
- Project construction was initiated in September 2001 and completed in September 2004.
- The Operation and Maintenance Manual is pending.