Project Details

Gillespie Area Drainage Master Study (Phase I)

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Project Contact: Douglas Williams
Region: SW
District: 4 - Clint L. Hickman 5 - Steve Gallardo

The Gillespie ADMS includes the study of about 148 square miles of southwestern Maricopa County, including portions of the Town of Gila Bend, the Woolsey Flood Protection District (FPD), and portions of the Town of Buckeye.p>

The purpose of the Gillespie ADMS is two-fold: 1) Identify and quantify flooding problems and flood hazards and 2) Establish development guidelines to ensure public safety for residents and property owners in the study area.


The District initiated the Area Drainage Master Study (ADMS) in 2010. The purpose of the study was to identify flood hazards by developing a hydrology and sediment model for the watershed. Based on the results of the modeling, the study team recommended mitigation strategies to address flooding issues that could impact existing and future development. The ADMS was completed in October 2013.

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