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Flood history in Idaho

Idaho has 85 county-level flood declarations across 39 counties. Shoshone County leads with 6 declarations. Total tracked FEMA obligations for flood events in this state: $38.1M.

This page shows every Idaho county in Idaho that has at least one FEMA flood declaration on record, ranked by how many times that hazard type triggered federal aid. Counties near the top of this list have recurring exposure to flood events — useful context for anyone evaluating property risk, insurance needs, or emergency planning in the area.

For the full national view of flood declarations across all states, see the flood disaster type page. For all hazard types in Idaho, see the Idaho state page.

Flood in Idaho

Counties ranked by flood declaration count

#CountyDeclarationsTracked aid
1Shoshone County6$1.4M
2Idaho County5$12.5M
3Latah County5$671K
4Clearwater County4$601K
5Kootenai County4$2.8M
6Benewah County3$267K
7Bonner County3$1.6M
8Elmore County3$635K
9Gooding County3$494K
10Lewis County3$68K
11Nez Perce County3$1.9M
12Washington County3$226K
13Ada County2$3.9M
14Adams County2$159K
15Bingham County2$298K
16Blaine County2$598K
17Bonneville County2$0
18Boundary County2$1.2M
19Camas County2$1.1M
20Cassia County2$3.1M
21Jefferson County2$348K
22Jerome County2$178K
23Lincoln County2$0
24Minidoka County2$995K
25Valley County2$964K
26Bannock County1$0
27Boise County1$0
28Butte County1$0
29Canyon County1$158K
30Caribou County1$0
31Custer County1$869K
32Franklin County1$375K
33Fremont County1$0
34Gem County1$0
35Madison County1$0
36Owyhee County1$0
37Payette County1$0
38Power County1$0
39Twin Falls County1$818K