Flood Zone API Get a free key

Flood map coverage in Utah

FEMA's National Flood Hazard Layer holds 1,438 FIRM panels for Utah from 19 digital flood map databases, reaching 18 of its 29 counties. Computed September 29, 2026.

1,438FIRM panels
76%took effect before September 29, 2016
2026-06-23newest panel (49049C0305G)
130LOMRs in effect

What to expect from lookups here

A real lookup in Utah

The point is the Census internal point of Utah County, the county with Utah's most recently effective FIRM panel. FEMA's map puts it in zone X (area of minimal flood hazard). Recorded September 29, 2026.

Request
curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
  -H "Authorization: Bearer $FZA_KEY" \
  -d lat=40.12042 -d lon=-111.66851
Response 200
{
  "query": {
    "lat": 40.12042,
    "lon": -111.66851
  },
  "location": {
    "lat": 40.12042,
    "lon": -111.66851,
    "geocoder": null,
    "precision": "input_coordinates",
    "matched_address": null,
    "candidates": null,
    "county": null,
    "county_fips": null,
    "state": null
  },
  "flood_zone": {
    "mapped": true,
    "zone": "X",
    "subtype": "AREA OF MINIMAL FLOOD HAZARD",
    "description": "Area of minimal flood hazard. Outside the Special Flood Hazard Area.",
    "sfha": false,
    "static_bfe": null,
    "depth": null,
    "dfirm_id": "49049C",
    "polygon_id": "49049C_2054",
    "at_zone_boundary": false,
    "other_zones": []
  },
  "firm_panel": {
    "panel": "49049C0756F",
    "effective_date": "2020-06-19",
    "panel_type": "Countywide, Panel Printed",
    "dfirm_id": "49049C",
    "other_panels": []
  },
  "source": {
    "dataset": "FEMA National Flood Hazard Layer (NFHL)",
    "service": "https://hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer",
    "layers": [
      {
        "id": 28,
        "name": "Flood Hazard Zones"
      },
      {
        "id": 3,
        "name": "FIRM Panels"
      }
    ],
    "query_point": {
      "lat": 40.12042,
      "lon": -111.66851
    },
    "queried_at": "2026-09-29T08:38:00Z",
    "cached": true,
    "cache_ttl_seconds": 86400
  },
  "notice": "Informational. This is the zone shown on FEMA's effective flood map (NFHL) at this point. It is not a Standard Flood Hazard Determination (FEMA Form 086-0-32), a prediction of flood risk, or an insurance quote, and it does not reflect a Letter of Map Amendment issued for a single structure."
}

Every digital flood map in Utah

MapDFIRM IDID typePanelsNewest panelOldest panelOver 10 years oldLOMRs in effect
Box Elder County49003CCounty1602010-09-292010-09-291603
Cache County49005CCounty772023-05-092011-05-24321
Carbon County49007CCounty632012-05-022012-05-02632
City of Eureka490079Community-numbered32007-12-042007-12-0431
City of Nephi490229Community-numbered32007-12-042007-12-0430
Davis County49011CCounty752022-09-152007-06-184218
Grand County49019CCounty492020-04-031981-10-06443
Morgan County49029CCounty462017-12-072010-04-19252
Salt Lake County49035CCounty1102021-11-192001-09-219638
Sanpete County49039CCounty552012-05-022012-05-02551
Sevier County49041CCounty192012-12-182012-12-18190
Summit County49043CCounty812021-03-232006-03-16512
Tooele County49045CCounty1682009-11-182009-11-181683
Town of Paragonah490075Community-numbered12005-06-022005-06-0210
Uintah County49047CCounty1032010-10-062010-10-061032
Utah County49049CCounty1522026-06-232020-06-1901
Wasatch County49051CCounty652012-03-152012-03-15656
Washington County49053CCounty1152009-04-022009-04-0211544
Weber County49057CCounty932023-11-302005-12-16533
Dates are panel effective dates (YYYY-MM-DD). "Placeholder" means FEMA's record carries a non-date such as 9999-09-09. "Over 10 years old" counts panels effective before September 29, 2016. "LOMRs in effect" are Letters of Map Revision not yet folded into a new FIRM. The DFIRM ID appears in responses as flood_zone.dfirm_id and firm_panel.dfirm_id.

Counties with no digital FIRM in the NFHL

No digital flood map in the NFHL links to these counties (Census county FIPS in brackets). Addresses here return "mapped": false; FEMA may still have paper maps for them.

Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states ยท API reference