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Project Name: Cave Buttes Dam Modifications


Project Manager: Unknown
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Project is in Supervisor District:

  • District 1: False
  • District 2: False
  • District 3: True
  • District 4: False
  • District 5: False

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Project Type: Construction

Project Description:

The Cave Buttes Dam is an earth-fill flood control structure, complemented by a system of three earthen dikes, that impounds stormwater runoff from Cave Creek Wash. Constructed by the U.S. Army Corps of Engineers, the dam and dike system has provided flood protection for downstream properties in the Phoenix metro area since 1980.  

The Flood Control District of Maricopa County has performed design work for modifications to Cave Buttes Dam under a consultant contract with AECOM. While this dam has no Arizona Department of Water Resources (ADWR) dam safety deficiencies, the District is implementing dam safety improvements to the existing Cave Buttes Dam.  

These modifications will consist of two major features. The first (Phase I) is anticipated to be completed in 2021 and consists of a gated auxiliary outlet tunnel, which will decrease the time it takes for the water collected behind the dam to drain. The second planned improvement (Phase II) will be a seepage collection system to control potential seepage through the dam embankment and foundation.  

Last Updated: 4/2/2021 10:17:17 AM

Project Updates

Phase 1 Construction
Posted On: 8/5/2020 9:15:44 AM

Phase I is currently in construction. A CMAR construction contract has been awarded to Coffman/SSC Joint Venture. Construction completion is anticipated for summer 2021.

Public Meetings

There are no public meetings scheduled.

Project Documents

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There are no documents attached for this project.