FEMA flood zone rules in Tempe, AZ — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Tempe participates in the National Flood Insurance Program (NFIP) and regulates development in FEMA-designated flood zones. Properties in Special Flood Hazard Areas (SFHAs) along the Salt River and Indian Bend Wash must meet floodplain management standards.
Tempe's floodplain regulations require that new construction and substantial improvements in FEMA-designated Special Flood Hazard Areas (Zone A, AE) meet elevation and floodproofing standards. The lowest floor of residential structures must be at or above the base flood elevation (BFE). The Indian Bend Wash greenbelt serves as a major flood control feature. Tempe's Engineering division reviews development permits in flood zones. Flood insurance is required for federally-backed mortgages on properties in SFHAs.
Building in a flood zone without proper permits and elevation certificates violates both local and federal regulations. Properties may be denied flood insurance. Non-compliant structures may face mandatory elevation or demolition.
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Side-by-side rule comparisons with other cities in Maricopa County.
See how other cities in Maricopa County handle flood zones.
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