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This page contains floodplain permitting resources for the public and licensed professionals, such as permit guidelines, construction details, historical aerial photography, and technical tools such as hydrologic and hydraulic modeling software.  This page is a new feature on our website and we welcome your feedback on how these resources are organized and about what information is presented in each tab.

General Resources

The following resources are applicable to a wide array of our customers.  If you don't find what you're looking for here, please check the other tabs.

FEMA Technical Bulletins


Standard Construction Details for Structures and Other Site Improvements

The details provided below are standard details that may be used under certain circumstances. They are NOT appropriate for all situations and should not be used without consultation with, and usually a permit from, the District. Inappropriate use of the details could result in creating a hazard or causing harm.

Resources for Engineers

Resources for Surveyors


Floodplain Resources for Real Estate Professionals

The Pima County Regional Flood Control District (District) wants to help you understand the potential pitfalls of buying or selling properties that are in the floodplain and protect your clients in the process. The District has created a dedicated website for real estate professionals filled with resources on floodplains, insurance, safety, and more.


The District has created a number of programs and calculation sheets to help standardize floodplain and erosion hazard analysis within Pima County.  Please visit the Software Page for a complete list of the software available.


Check out the listing below for various manuals currently available on-line. New manuals will be added as electronic versions become available.

Engineering Manuals

Guidance Manuals

Riparian Habitat Mitigation Guidelines

MyAlerts Flood Alert Messaging

The Pima County Office of Emergency Management has made it possible through a system called MyAlerts for the Regional Flood Control District to provide near-real-time flood alerts to Pima County residents within certain watersheds. The MyAlerts Flood Alert Messaging webpage provides information about MyAlerts and information specific to the covered watersheds.