Project Details

Wittmann Area Drainage Master Plan

Public Meetings

Currently there are no public meetings scheduled for this project.

Past Public Meetings

• 3/19/2009
• 8/27/2008
• 4/8/2008
• 10/18/2007
• 5/22/2007
• 9/21/2006
• 4/26/2005
• 4/6/2005
• 4/5/2005
• 1/22/2004
• 1/20/2004
Project Contact: Douglas Williams
Region: NW
District: 4 - Clint L. Hickman

The Wittmann Area Drainage Master Plan (ADMP) was completed in June of 2009. The ADMP included approximately 308 square miles of area, including portions of unincorporated Maricopa County, the City of Peoria, the City of Surprise, and the Town of Buckeye. Approximately 90 square miles of the study area are held by State Trust, the Bureau of Land Management, the Bureau of Reclamation, and other government agencies. The study looked at drainage for the Iona, Trilby, Wittmann, and Padelford washes, among others, and it assessed issues associated with McMicken Dam and the Central Arizona Project.

The ADMP identified existing area flooding hazards as well as potential future flooding problems associated with impending development. The ADMP then made recommendations for regional projects to mitigate or reduce flooding problems, and it generated rules of development with policies, standards, and guidelines.


The ADMP was completed in June 2009. Implementation of the recommended plan is subject to future partnerships.

Available Documents

Document Name Type Size
Wittmann ADMP Brochure July 2003 PDF 8.0 MB
Wittmann ADMP Fact Sheet 2003 PDF 656 KB
Wittmann ADMP Fact Sheet 2008 PDF 2.22 MB
Wittmann ADMP Floodplain Delineations 2008 JPG 5.86 MB
Wittmann ADMP Iona Wash FDS March 2009 PDF 3.88
Wittmann ADMP Newsletter 2005 PDF 1.64 MB
Wittmann ADMP Open House Notice April 2005 (Delineations) PDF 39 KB
Wittmann ADMP Presentation April 2005 Power Point 50 MB
Wittmann ADMP Presentation January 2004 PDF 1.65 MB
Wittmann ADMP Presentation January 2004 HTML --
Wittmann ADMP Presentation September 2003 HTML --
Wittmann ADMP Public Meeting August 2008 PPT 3.14 MB
Wittmann ADMP Recommended Alternative 2008 PDF 15.2 MB
Wittmann ADMP Recommended Improvements March 2009 PDF 3.28
Wittmann ADMP Typical Basins March 2009 PDF 2.58
Wittmann ADMP Typical Channel Treatments March 2009 PDF 2.71 MB
Wittmann ADMP Typical Structures March 2009 PDF 3.22 MB

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