Enter any address in Canyon County, Idaho to see its FEMA flood zone
1 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Canyon County, Idaho has recorded 12 flood-related events since 1996 according to NOAA's Storm Events Database, including 2 flash floods and 10 river or area floods. The county has received 4 federal disaster declarations, 1 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (2005–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Flooding | Flood | Mar 29, 2017 |
| Hurricane Katrina | Hurricane | Aug 29, 2005 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Jun 13, 2023 | 0.00K |
| Flood | Jun 5, 2022 | 0.00K |
| Flood | Mar 6, 2017 | 250.00K |
| Flood | May 1, 2017 | 750.00K |
| Flood | Apr 1, 2017 | 500.00K |
| Flash Flood | Sep 5, 2013 | 0.00K |
| Flood | May 1, 2012 | 0.00K |
| Flash Flood | May 6, 2005 | 50K |
| Flood | May 26, 1998 | — |
| Flood | Mar 23, 1998 | — |
Flood — Jun 13, 2023
A nearly stationary upper level low over the Four Corners region brought periods of heavy rain and thunderstorms which caused localized urban flooding in south central Idaho. Rainfall totals were around 0.50 inches, but the previous days rainfall made areas more prone to localized flooding.
Flood — Jun 5, 2022
Moist and unstable southwest flow moved into the region early on Sunday, June 5th. Favorable upper level dynamics combined with sufficient daytime heating led to several rounds of long-lasting severe thunderstorms through the overnight hours.
Flood — Mar 6, 2017
The Army Corps of Engineers and Bureau of Reclamation increased regulated flows from Lucky Peak Reservoir putting the Boise River in flood for the remainder of the month of March. Flooding was expected to continue through late spring.
Flood — May 1, 2017
The Boise River continued to be in flood during the entire month of May due to planned release at Lucky Peak.
Flood — Apr 1, 2017
Flooding continued for the entire month of April on the Boise River as a result of flood control efforts by the U.S. Army Corps of Engineers.
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in Canyon County, Idaho:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in Canyon County, Idaho that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.