Projects

Project Name: Cave Buttes Dam Modifications

79

Project Manager: Logan Brown
Contact by phone at (602) 506-2942 or by email

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) 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: 10/1/2024 2:21:36 PM