Flood zone · Utah
Flood zone in Utah
Flood zone (FEMA NFHL) data for ZIP codes in Utah. Pick a ZIP below to dive into the flood zone summary.
Last verified 2026-05-13 · methodology
What lands here
Pages show the flood zone code, what it means in plain English (1% annual chance zone, 0.2% annual chance zone, or outside mapped hazard), and the base flood elevation where assigned.
Source & refresh
FEMA NFHL. Refreshed quarterly loma updates. Primary source →
Utah top concern
Radon Zone 1, wildfire, water-supply scarcity
Utah is uniformly Zone 1 radon. Wildfire risk concentrates in the Wasatch + southern UT. Great Salt Lake decline + Colorado River allotment uncertainty drive water-supply pressure on Salt Lake metro EPA SDWIS systems.
See Utah 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.
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FEMA flood zones — AE vs. X vs. VE in plain English
FEMA's National Flood Hazard Layer maps every US property's flood-zone designation. Here's what AE, X, VE, and AO actually mean for your insurance bill.