Princeton Refuge Habitat Rehabilitation and Enhancement Project

Rock Island District


The Princeton Refuge HREP is located on the Iowa side of Pool 14 of the Upper Mississippi River navigation channel, between river miles 504.0 and 506.4. It is located approximately 1 mile north of Princeton, Iowa.

Project Quick Facts

  • Congressional District: Iowa -1
  • State(s) Covered: Iowa
  • Management Agency: Iowa Department of Natural Resources


  • Remove approximately 24 inches of soil in three areas to create marshland - excavated material to be used to restore existing perimeter levee.
  • Construct low level cross dike and water control structures - relocate existing pump to create a 2-cell wetland management unit configuration.
  • Plant mast trees.


  • The Definite Project Report was completed in 1995.
  • The main construction contract was awarded in September 1996 and completed in FY 1999.
  • Flood damage construction was completed in 2002.
  • The dedication ceremony was held in November 1999. 
  • The Operation and Maintenance Manual was completed in 2002.
  • An initial Performance Evaluation Report (PER) and Flood Damage Assessment (from the 2001 flood) was completed in November 2001.
  • Performance monitoring continues.

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