Project Details

Hohokam Area Drainage Master Plan

Public Meetings

Currently there are no public meetings scheduled for this project.

Past Public Meetings

• 12/5/2013
• 12/4/2013
• 2/5/2013
• 1/31/2013
• 5/26/2011
• 5/24/2011
• 5/17/2011
Project Contact: Afshin Ahouraiyan
Region: SE
District: 1 - Denny Barney 5 - Steve Gallardo

The Hohokam Area Drainage Master Plan (ADMP) is a comprehensive drainage study of south-central Phoenix and a portion of northwestern Tempe. The study area is bounded on the north by I-10 and the Salt River, on the east by I-10, on the south by South Mountain, and on the west by roughly 19th Avenue. The study area is approximately 28 square miles.

The major objectives of the study were to:

• Develop a comprehensive list of known flooding problems impacting the study area in order to evaluate the necessity for the identification of flood control solutions;
• Develop a comprehensive hydrologic model in order to quantify the drainage and flooding hazards within the study area; and
• Identify a flood control alternative for those flooding hazards that is cost-effective, context sensitive, and acceptable to the public and stakeholders.


Phase 1 of the study began in May 2010 with the initial data collection efforts as well as identification of flooding issues. Three public meetings were conducted in May 2011 to inform residents of the purpose of the project and to obtain input from the community regarding the knowledge of existing area flooding conditions.

During the Area Drainage Master Plan phase of the project, public meetings were conducted to present the proposed potential flood control alternatives to the public and receive input from them. Input received from the public at the public meetings, as well as other criteria were considered for the final selection of the recommended flood control plan. The final recommended flood control plan was presented to the public at public meetings held on December 4th and 5th, 2013. The documents from all the public meetings may be viewed in the "Available Documents" section below. The study ended in February 2014.

The District and the City will work together to implement the proposed drainage elements of the recommended plan based upon priority and as funding becomes available to the City and the District.

Available Documents

Document Name Type Size
Dec. 2013 Public Meeting Exhibits PDF 4.1 MB
Dec. 2013 Public Meeting Handout PDF 543 KB
Definition of Terms PDF 77.3 KB
Jan. 2013 10-Year Storm Flooding Depths PDF 9.2 MB
Jan. 2013 10-Year Storm with Flood Control Improvements PDF 9.3 MB
Jan. 2013 100-Year Storm Flooding Depths PDF 9.2 MB
Jan. 2013 Potential Flood Control Improvements PDF 7.2 MB
Jan. 2013 Public Meeting Handout PDF 9.6 MB
Jan. 2013 Study Area 100-Year Storm Flooding Depths PDF 10.6 MB
Jan./Feb. 2013 Public Meeting Presentation PDF 2.3 MB
May 2011 Public Meeting Presentation PDF 1 MB
Project Fact Sheet with Study Area Map PDF 5 MB

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