Andalusia Refuge Habitat Rehabilitation and Enhancement Project

Rock Island District

Pool 16, Upper Mississippi River Miles 462.9 - 463.0, Rock Island County, Illinois, Congressional District: Illinois - 17

Project Partners

  • U.S. Fish and Wildlife Service
  • Illinois Department of Natural Resources

Project Description

Andalusia Refuge is a 393-acre backwater complex located approximately 1 mile upstream of Illinois City, Illinois. All project site lands are federally owned. The site is managed by the Illinois Department of Natural Resources (ILDNR) under a cooperative agreement with the U.S. Fish and Wildlife Service.

Prior to this project, there were no moist soil management units located in Pool 16. The lack of shallow water habitat was adversely affecting waterfowl and furbearers. Fisheries suffered due to the lack of off-channel, deep aquatic habitat within this pool.

Water level control within the refuge has allowed development of a moist soil management unit that provides submergent and emergent vegetation for migrating waterfowl. Nearly 130 acres of managed nesting, resting, and shallow water feeding habitat for waterfowl has been created. Fisheries benefit from year-round access to deepwater channels in Dead Slough and the construction of channels within the refuge itself. Sedimentation in the refuge backwaters has been reduced; however, the Dead Slough access channel will require periodic excavation to maintain suitable depths.

Quick Facts

  • Approximate Acres: 393 (Source: Definitive Project Report)
  • State(s) Covered: Illinois
  • Land Ownership: Federal
  • Management Agency: Illinois Department of Natural Resources
  • Management Authority: Cooperative Agreement


  • The Definite Project Report was completed in November 1988
  • Project construction was initiated in 1989, and completed in 1994
  • The project has been turned over to the ILDNR for operation and maintenance with an Operation and Maintenance Manual issued in 1995
  • An initial performance evaluation report (PER) was completed in August 1997.  Supplemental PERs were completed in June 2001, April 2002, July 2003 and 2015.
  •  Inspection of Completed Works was completed in 2017.

  • Performance monitoring continues.