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Flood zone · Hawaii

Flood zone in Hawaii

Flood zone (FEMA NFHL) data for ZIP codes in Hawaii. Pick a ZIP below to dive into the flood zone summary.

Last verified 2026-09-24 · methodology

What lands here

Not on zipradar yet. The plan is the FEMA flood zone code, what it means in plain English, and the base flood elevation where assigned. Until then, look the address up on FEMA's Flood Map Service Center.

Source & refresh

FEMA NFHL. Refreshed quarterly loma updates. Primary source →

Hawaii top concern

Tsunami, lava-zone, water-source isolation

Hawaii's federated data is unusual: FEMA tsunami evacuation zones are state-managed alongside NFHL flood maps; Big Island lava-flow zones (USGS) overlay FEMA hazard layers. Each island operates independent water utilities, so EPA SDWIS PWSIDs do not aggregate across the state.

See Hawaii state page for the full state-level rollup across all 12 dimensions.

Read more on flood zone

Editorial deep-dives explaining the source data, its limits, and how to read it.

5 Hawaii ZIPs