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Fredonia FRS

Fredonia Flood Retarding Structure

Rehabilitation Fact Sheet

Sponsors:

  1. Town of Fredonia
  2. Fredonia Natural Resource Conservation District

Project Location: Northern Coconino County, Arizona

Authorization: Watershed Protection and Flood Prevention Act, Public Law 83-566, as amended, and Public Law 106-472, Small Watershed Rehabilitation Amendments of 2000.

Estimated Construction Cost: $3 million
Projected Construction Start: January 2012

Project Summary:

The Fredonia Flood Retarding Structure (FRS) was originally constructed by the Soil Conservation Service (now the Natural Resources Conservation Service–NRCS) in 1973.  It is operated and maintained by the Town of Fredonia.  The 1.8-mile-long earthen structure provides flood protection to the Town of Fredonia, Arizona, including:

  • an estimated 1,250 residents

  • 230 residential and commercial properties, and related infrastructure. 

The FRS has developed safety deficiencies and inadequacies since the time of its construction related to embankment cracking and emergency spillway capacity.  To address these concerns, the project Sponsors, with assistance from the NRCS, completed a Supplemental Watershed Plan and Environmental Assessment (Plan/EA) in 2009.  The Plan/EA calls for replacement of the FRS with a levee/floodway system to provide for continued flood protection for the Town.  The total flood damage reduction benefit from the rehabilitation project is estimated at $31 million.  NRCS is currently working with the Sponsors to prepare engineering plans and designs for this high priority dam rehabilitation project.