header illustration - link to pima.gov

Hot Links

General Information


Sheriff Hank Highwater





Back Button. You can also use your browser's back button.

Regional Flood Control District Maps

The District uses maps in a variety of ways; to convey flood hazard information, to graphically describe flood control projects, or to relate other spatial data. These maps may be static like a paper map or interactive, such as those using MapGuide as an interface over the internet. This page contains links to the more popular relevant maps available from the District. It does not represent a comprehensive collection of every map the District has. Project-specific maps are located on the Projects page. Maps associated with FEMA Letters of Map Revision (LOMRs), Conditional Letters of Map Revision (CLOMRs) and Letters of Map Amendment (LOMAs) can be found on the CLOMRs, LOMRs and LOMAs page.

Flood and Erosion Hazard Maps

Flood Hazard Map
An interactive map utilizing free Adobe Acrobat Reader software that allows individuals to determine known flood hazards on specific parcels of land.

PC-HYDRO MapGuide Map
An interactive MapGuide map that provides information necessary to utilize the PC-HYDRO hydrology program. The map features the Hydrologic Soils Groups.

1936 and 1941 historical aerial photos


Riparian Habitat Maps

An interactive MapGuide map allows individuals to locate and identify Regulated Riparian Habitat (RRH) on their property.  The Riparian Classification Maps (RCM) were developed in 1994 to protect riparian habitat associated with floodplains and updated in 2005 as part of the Sonoran Desert Conservation Plan.  The updated RCM are based on plant species diversity, vegetation density and availability of water.  The tutorial How to Create an Aerial Photo Exhibit Using MapGuide provides guidance on how to view and print a map.

<Watercourse and Riparian Habitat Mitigation Map>

An interactive MapGuide map that will assist developers and property owners in selecting appropriate parcels for mitigating impacts to Regulated Riparian Habitat under the Regulated Riparian Habitat Offsite Mitigation Guidelines for Unincorporated Pima County.


Pima County Seal
Privacy Statement
/ Disclaimer / RFCD Disclaimer / RFCD Intranet (Restricted access)