Enter any address in Washakie County, Wyoming to see its FEMA flood zone
Flash flooding from heavy rainfall events is the primary flood concern in Washakie County. Over the last 30 years, NOAA Storm Events data shows 12 flood events and 6 flash flood events impacting the county. For example, in September 2023, persistent moderate rain led to fast-rising streams and minor flooding of rural roads in the southern Bighorn Mountains. In August 2019, over an inch of rain in just 25 minutes caused street flooding in Worland, backing water into several buildings.
While many National Flood Insurance Program (NFIP) claims in Washakie County have resulted in zero dollar payouts and minimal water depth, this does not eliminate risk. Claims in Zone A, typically considered higher risk, averaged 0.3 feet of water depth. Properties located in flood zones, particularly those near streams and creeks, should be aware of potential flood impacts.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
7 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Washakie County, Wyoming has recorded 18 flood-related events since 1996 according to NOAA's Storm Events Database, including 6 flash floods and 12 river or area floods. The county has received 5 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1978–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Flooding | Flood | Jun 7, 2017 |
| Severe Storms, Flooding, And Landslides | Severe Storm | May 18, 2011 |
| Severe Storms, Flooding & Mudslides | Flood | May 29, 1978 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Sep 4, 2023 | 0.00K |
| Flood | May 29, 2019 | 0.00K |
| Flood | May 27, 2019 | 0.00K |
| Flash Flood | Aug 21, 2019 | 0.00K |
| Flood | May 24, 2018 | 0.00K |
| Flash Flood | Jul 5, 2018 | 0.00K |
| Flood | Feb 10, 2017 | 100.00K |
| Flood | Mar 7, 2014 | 50.00K |
| Flood | Mar 7, 2014 | 250.00K |
| Flood | Jun 29, 2011 | 100.00K |
Flash Flood — Sep 4, 2023
A large area of persistent moderate rain caused fast rising streams and creeks, leading to minor flooding of rural roads across the southern Bighorn Mountains.
Flood — May 29, 2019
A combination of rain and snow melt brought minor flooding along the Ten Sleep Creek.
Flood — May 27, 2019
A persistent area of low pressure brought one to three inches of rain to portions of the eastern Big Horn Basin. The result was minor flooding in Worland and Medicine Lodge State Park. In Ten Sleep Canyon, two small mudslides occurred.
Flash Flood — Aug 21, 2019
Numerous slow moving thunderstorms developed across central Wyoming and some became severe. On severe thunderstorm crossed US 20 26 in eastern Fremont County and brought ping pong ball size hail that damaged a pick up truck. Another storm produced a 62 mph near Linch in Johnson County. In Worland Wyoming, over an inch of rain and small hail fell in only 25 minutes and brought street flooding th...
Flood — May 24, 2018
A combination of heavy rain, snow melt and a clogged culvert resulted in flooding near the Highway 16 bridge along Ten Sleep Creek. Several campgrounds were flooded. The water got close the top of the bridge but never topped it.
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 Washakie County, Wyoming:
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 Washakie County, Wyoming 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.