Enter any address in Twin Falls County, Idaho to see its FEMA flood zone
Twin Falls County, Idaho has recorded 11 flood-related events since 1996 according to NOAA's Storm Events Database, including 8 flash floods and 3 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 |
| Severe Winter Storms And Flooding | Flood | Feb 5, 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 | Feb 8, 2017 | 2.50M |
| Flash Flood | Aug 13, 2014 | 0.00K |
| Flash Flood | Sep 4, 2013 | 0.00K |
| Flash Flood | Aug 5, 2010 | 0.00K |
| Flash Flood | Jul 5, 2009 | 0.00K |
| Flash Flood | Jul 25, 2006 | — |
| Flash Flood | Jun 8, 2006 | — |
| Flood | Jun 1, 1997 | 50M |
| Flash Flood | Jun 7, 1996 | — |
| Flood | Jun 7, 1996 | — |
Flood — Feb 8, 2017
Strong Southwesterly flow behind a warm front spread heavy rain across most of the intermountain west. Flooding occurred in most of South Central Idaho.
Flash Flood — Aug 13, 2014
An upper level low pressure system off the coast of Oregon moved slowly inland on the 13th leading to more severe weather across Southwest Idaho.
Flash Flood — Sep 4, 2013
Moist flow and increasing winds across the Intermountain West ahead of an upper low situated off the coast of Washington helped to create conditions for severe thunderstorms across parts of Southeast Idaho on the 4th of the month.
Flash Flood — Aug 5, 2010
An area of strong thunderstorms developed over the West Central Mountains of Idaho and downed trees along an approximately 50 mile path.
Flash Flood — Jul 5, 2009
A jet streak surging out of California slammed into Southwest Idaho during afternoon heating providing the ingredients for an outbreak of severe weather across the area.
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 Twin Falls 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 Twin Falls 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.