San Pedro River

To provide comments on this watershed for consideration in the Floodplain Management Plan, contact Greg Saxe
Planning Manager
(520) 724-4633.
The San Pedro River originates in Mexico and flows through Co-chise County prior to entering Pima County. Near Pima County, it drains the eastern slopes of the Rincon and Santa Catalina mountains and western slopes of the Galiuro Mountains. The San Pedro exits Pima County into Pinal County south of the community of San Manuel. Though it is one of the largest watercourses in Pima County, the remote and rural nature of this area means that few people are impacted by flooding on the San Pedro River and its tributaries. Within Pima County, this watershed is comprised of 181,901 acres and contains 3,231 acres of SFHA, 1,674 acres of locally identified floodplain and 15,438 acres of Pima County Regulated Riparian Habitat.

Flood Hazards


Click HERE to view the watershed map
Click HERE to view the outreach brochure
Click HERE to view the hazard map

Floodplain Studies

There are currently no floodplain studies in this watershed other than those conducted by FEMA that are provided on the Flood Insurance Rate Maps.

Erosion Studies

There are currently no erosion studies in this watershed.

Areas of Interest (Known Issues, Gaps, Problems and Needs)

Issues Provided by Public and Stakeholder Input

No issues have been identified to date.

Issues from the District Flood Response Manual

No issues have been identified to date. 

Action Plan

This section yet to be completed.