Flood map coverage in Idaho
FEMA's National Flood Hazard Layer holds 1,126 FIRM panels for Idaho from 14 digital flood map databases, reaching 14 of its 44 counties. Computed September 29, 2026.
1,126FIRM panels
74%took effect before September 29, 2016
2026-06-10newest panel (16081C0190D)
104LOMRs in effect
What to expect from lookups here
- 30 counties have no digital FIRM in the NFHL (listed below). Points there come back
"mapped": false. - The map that has gone longest without a new panel is Jefferson County (16051C), last revised 2008-09-26.
A real lookup in Idaho
The point is the Census internal point of Teton County, the county with Idaho's most recently effective FIRM panel. FEMA's map puts it in zone X (area of minimal flood hazard). Recorded September 29, 2026.
curl -sG https://api.floodzoneapi.com/api/v1/flood/zone \
-H "Authorization: Bearer $FZA_KEY" \
-d lat=43.76099 -d lon=-111.21176{
"query": {
"lat": 43.76099,
"lon": -111.21176
},
"location": {
"lat": 43.76099,
"lon": -111.21176,
"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": "16081C",
"polygon_id": "16081C_7810",
"at_zone_boundary": false,
"other_zones": []
},
"firm_panel": {
"panel": "16081C0165D",
"effective_date": "2026-06-10",
"panel_type": "Countywide, Panel Printed",
"dfirm_id": "16081C",
"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": 43.76099,
"lon": -111.21176
},
"queried_at": "2026-09-29T08:37:37Z",
"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 Idaho
| Map | DFIRM ID | ID type | Panels | Newest panel | Oldest panel | Over 10 years old | LOMRs in effect |
|---|---|---|---|---|---|---|---|
| Ada County | 16001C | County | 92 | 2020-06-19 | 2003-02-19 | 57 | 56 |
| Bannock County | 16005C | County | 89 | 2020-07-22 | 2009-07-07 | 83 | 6 |
| Benewah County | 16009C | County | 41 | 2009-09-25 | 2009-09-25 | 41 | 1 |
| Blaine County | 16013C | County | 178 | 2010-11-26 | 2010-11-26 | 178 | 18 |
| Bonner County | 16017C | County | 115 | 2014-07-07 | 2009-11-18 | 115 | 1 |
| Canyon County | 16027C | County | 79 | 2019-06-07 | 2011-05-24 | 42 | 14 |
| Gem County | 16045C | County | 54 | 2021-08-24 | 2021-08-24 | 0 | 0 |
| Jefferson County | 16051C | County | 24 | 2008-09-26 | 2008-09-26 | 24 | 0 |
| Kootenai County | 16055C | County | 79 | 2010-05-03 | 2010-05-03 | 79 | 6 |
| Shoshone County | 16079C | County | 121 | 2008-09-26 | 2008-09-26 | 121 | 2 |
| Teton County | 16081C | County | 41 | 2026-06-10 | 2026-06-10 | 0 | 0 |
| Twin Falls County | 16083C | County | 29 | 2008-09-26 | 2008-09-26 | 29 | 0 |
| Valley County | 16085C | County | 119 | 2019-02-01 | 2019-02-01 | 0 | 0 |
| Washington County | 16087C | County | 65 | 2009-06-16 | 2009-06-16 | 65 | 0 |
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.
- Adams County (16003)
- Bear Lake County (16007)
- Bingham County (16011)
- Boise County (16015)
- Bonneville County (16019)
- Boundary County (16021)
- Butte County (16023)
- Camas County (16025)
- Caribou County (16029)
- Cassia County (16031)
- Clark County (16033)
- Clearwater County (16035)
- Custer County (16037)
- Elmore County (16039)
- Franklin County (16041)
- Fremont County (16043)
- Gooding County (16047)
- Idaho County (16049)
- Jerome County (16053)
- Latah County (16057)
- Lemhi County (16059)
- Lewis County (16061)
- Lincoln County (16063)
- Madison County (16065)
- Minidoka County (16067)
- Nez Perce County (16069)
- Oneida County (16071)
- Owyhee County (16073)
- Payette County (16075)
- Power County (16077)
Source: FEMA NFHL layers 1, 3 and 22 and the Census Bureau county gazetteer, computed September 29, 2026. All states ยท API reference