FEMA flood zone rules in Vallejo, CA — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Vallejo has extensive FEMA flood zones along Mare Island, the Napa River, and Carquinez Strait waterfront. Sea level rise threatens low-lying Mare Island redevelopment areas. Flood insurance required for properties in Special Flood Hazard Areas.
Vallejo contains significant FEMA-designated Special Flood Hazard Areas concentrated along the Mare Island causeway and shoreline, the Napa River corridor on the city's eastern boundary, and the Carquinez Strait waterfront downtown. Mare Island, a former naval shipyard undergoing mixed-use redevelopment, sits at particularly low elevation with portions subject to both tidal flooding and sea level rise projections. The Napa River has a history of flooding affecting properties in the Glen Cove and eastern Vallejo neighborhoods. The Carquinez Strait waterfront is subject to storm surge and king tide events. New construction in flood zones requires elevated foundations, flood-resistant materials, and compliance with the city's floodplain management ordinance. Flood insurance is mandatory for properties with federally backed mortgages in SFHA zones.
Building in flood zone without permit: stop-work order and mandatory remediation. Non-compliant construction: retrofit at owner expense. NFIP non-compliance jeopardizes community flood insurance eligibility.
Vallejo, CA
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Vallejo, CA
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Vallejo, CA
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Vallejo, CA
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Vallejo, CA
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Side-by-side rule comparisons with other cities in Solano County.
See how other cities in Solano County handle flood zones.
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