Brawley Wash

To provide comments on this watershed for consideration in the Floodplain Management Plan, contact Greg Saxe
Planning Manager
(520) 724-4633.
The Brawley Wash watershed is the largest within Pima County and is comprised of 442,629 acres. The headwaters of the Brawley Wash, as well as its tributary Blanco Wash, originate in the Roskruge and Coyote mountains on the south side of State Route 86 in the community of Three Points/Robles Junction. The Altar Wash and Black Wash are also significant tributaries. The Brawley Wash flows northward toward Pinal County where it joins the Santa Cruz River. Flood risks vary, but sheetflow flooding is the dominant type of flooding that affects residents. While sheetflow flooding is generally fairly shallow, it is also very widespread and makes accessing properties difficult. This is especially true due to the rural nature of the area and the prevalence of unmaintained dirt roads. In sheetflow floodplains, it is important to protect your home from flooding and obtain flood insurance, but it is not appropriate to prevent your property from flooding as this makes flooding worse for neighbors. This watershed, includ-ing all tributaries, contains 76,385 acres of SFHA, 131,906 acres of locally identified floodplain and 47,429 acres of Pima County Regulated Riparian Habitat.

Flood Hazards


Watershed Map
Outreach Brochure 
Hazard Map

Floodplain Studies

Floodplain Study FP-008-1988 - Millstone Manor No. 6, PCDOT&FCD, 6/20/1988.

Floodplain Study FP-029-1987 - San Joaquin Estates Floodplain Status Hydrology Report for San Joaquin Estates - Improvement Plans Lots 268 thru 290, Trimble Engineering, Inc., 3/22/1987 and Drainage Reports for Phases III-A, IV and V of San Joaquin Estates, CMG Drainage Engineering, Inc., 5/31/1989.

Floodplain Study FP-031-1996 - Brawley Wash Floodplain Study, Simons, Li & Associates, Inc., 9/6/1996.

Floodplain Study FP-042-1999 - Brawley Wash Primary Flood Corridor Study, Simons, Li & Associates, 6/1/1999.

Floodplain Study FP-044-1982 - Central Arizona Project (CAP) Tucson Aqueduct, Bureau of Reclamation, U.S. Dept. of the Interior, Reach 3 May 1982, Reach 4 April 1984, Reach 5 June 1983.

Floodplain Study FP-049-2007 - Diamond Bell Ranch Hydrology, Psomas, 10/12/2007.

Floodplain Study FP-050-2008 - Floodplain Study for Flecha Caida Ranch Estates #9, Including Portions of Flecha Caida Ranch Estates #1 and #2 and Las Lomas de Catalina, JE Fuller Hydrology & Geomorphology Inc., 4/8/2008

Floodplain Study FP-070-2003 - 12-10 Area Floodplain Mapping, RFCD, 6/3/2003.

Floodplain Study FP-070-2003 - 12-10 Area Floodplain Mapping, RFCD, 6/3/2003.

Erosion Studies

There are currently no erosion studies in this watershed.

Step 6 - Floodplain Management Plan Goals

Floodplain Management Plan Goals

Recommendation of Actions and Floodplain Management Strategy

Brawley Wash Action Plan Map

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Regional Flood Control District

201 N. Stone Avenue, 9th Fl.
Tucson, AZ 85701

Phone: (520) 724-4600
Fax: (520) 724-4621

Customer Service Hours:
8:00AM - 4:00PM

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