Development in Pearl City's FEMA-mapped flood zones must comply with ROH Chapter 21A, which governs special flood hazard areas, elevation standards, and flood variance procedures.
Sec. 21A-1.5 adopts FEMA Flood Insurance Rate Maps identifying special flood hazard areas. Sec. 21A-1.8 requires flood fringe elevation to or above base flood elevation. Sec. 21A-1.12 governs flood variance standards. LUO Sec. 21-9.10 also cross-references flood hazard development. Pearl City areas near Waiawa Stream, Waimano Stream, and coastal reaches of Pearl Harbor have floodplain designations. Elevation, flood openings for enclosures, and flood-resistant materials may be required. Following Chapter 21A supports community eligibility for the National Flood Insurance Program.
Non-compliant construction in flood hazard areas can result in stop-work orders, denial of certificates of occupancy, and flood insurance impacts.
See how other cities in Honolulu County handle flood zones.
See how Pearl City's flood zones rules stack up against other locations.
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