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Black Wash

To provide comments on this watershed for consideration in the Floodplain Management Plan, contact Greg Saxe
Planning Manager
(520) 724-4633.
The Black Wash’s headwaters originate on Black Mountain within the San Xavier District of the Tohono O’odham Nation. Tributaries from the northeastern slopes of the Sierrita Moun-tains south of San Xavier join it along with those emanating from the southwestern slopes of the Tucson Mountains. These combined flows join the West Branch of the Brawley Wash near Sandario Road.  Sheetflow flooding is common and the District has documented flooded structures in this area. While gener-ally fairly shallow, sheetflow flooding is also very widespread and makes accessing properties difficult. Floodwaters may rise quickly and may be very dangerous. It is important to protect your home from flooding and obtain flood insurance in this area, but it is not appropriate to prevent your property from flooding as this makes flooding worse for neighbors. This watershed is comprised of 44,994 acres and contains 13,437 acres of SFHA, 1,977 acres of locally identified floodplain and 3,034 acres of Pima County Regulated Riparian Habitat.
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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 - 4:30PM

Effective February 1, 2022
Customer Service Hours:
8:00AM - 4:00PM


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