Instructions for Organizing and Submitting Technical Support Data Notebooks (TSDN) for Flood Studies to Local Governments and FEMA.
"Protecting & enhancing Arizona’s water supplies for current and future generations."
Floodplain Management Forms
Floodplain Management ORdinances and Standards
State Standards
The Department’s State Standards Work Group was formed in 1990 to establish guidelines to assist communities with floodplain management. These guidelines were developed by incorporating input and expertise from local, state, federal and private entities. They include:
Accordion Title
Provides guidance on the unique modeling conditions encountered in Arizona. This download includes Appendices and Technical Supplements.
Provides methodologies for estimating 100-year peak discharges, delineating 100-year floodplain limits, and determining administrative floodway boundaries for riverine floodplains in Arizona.
Provides guidelines to be used when modeling floodways for supercritical or near-critical flow conditions in Arizona.
Details minimum floodplain management standards for identification of and development within sheet flooding areas in Arizona.
Provides guidelines for identification of and development within erosion hazard areas, watercourses with a net sediment deficit, and watercourses with a net sediment surplus. Provides individual guidelines for: lateral migration setback allowances, channel degradation estimations, and river stability impacts associated with sand and gravel operations.
Provides a site plan checklist, typical plan and cross-section requirements for individual residential lots within watercourses.
Provides minimum design standards for several watercourse bank stabilization techniques.
Provides minimum guidelines for sizing detention and/or retention facilities
Provides guidelines on mathematical modeling for hydraulic processes in watercourses.
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Ordinances for Floodplain Management
Each community that participates in the NFIP must adopt a Floodplain Management Ordinance. FEMA Region IX and the state have developed model floodplain management ordinances that communities can use to meet federal and state minimum requirements. They include: