FEMA flood zone rules in Surprise, AZ — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Surprise has FEMA-designated flood zones, particularly along the Agua Fria River and New River washes. Properties in Special Flood Hazard Areas (SFHAs) must comply with floodplain management regulations, carry flood insurance, and meet elevated construction standards.
The City of Surprise participates in the National Flood Insurance Program (NFIP) and enforces floodplain management regulations for properties in FEMA-designated Special Flood Hazard Areas. The Agua Fria River, New River, and associated desert washes create flood risk in portions of the city, particularly during monsoon season (July through September). Properties in Zone A and Zone AE flood areas must carry flood insurance if they have federally backed mortgages. New construction in flood zones must be elevated above the Base Flood Elevation (BFE). Substantial improvements to existing structures (50% or more of market value) must also meet flood zone building standards. The city requires floodplain use permits for any development within the floodplain. Maricopa County Flood Control District manages regional flood infrastructure. Contact Community Development at (623) 222-1200 for floodplain determinations.
Building in the floodplain without a floodplain use permit violates city code and NFIP requirements. Non-compliance may result in denial of flood insurance, building permit revocation, and fines. Structures failing to meet BFE may face higher insurance premiums.
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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.
See how Surprise's flood zones rules stack up against other locations.
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