Enter any address in Sheridan County, Wyoming to see its FEMA flood zone
Flash flooding from summer thunderstorms and general flooding from heavy rainfall are the dominant flood types in Sheridan County. Recent events include a flash flood on July 15, 2019, caused by a slow-moving thunderstorm producing heavy rain, and a flood on May 28, 2018, following several days of heavy rainfall that led to rapid rises on Big Goose Creek, impacting basements and streets.
Over the past 30 years, NOAA data shows 12 flash flood events and 10 flood events. National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced the most claims, with an average payout of $5,413 and an average water depth of -1.5 feet. Properties in Zone X also show claims, with an average payout of $2,120 and an average water depth of 0.3 feet. Homeowners, journalists, and real estate agents should pay close attention to properties located in Zone A and near waterways, as these areas have historically seen more flood-related insurance claims.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
1 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Sheridan County, Wyoming has recorded 22 flood-related events since 1996 according to NOAA's Storm Events Database, including 12 flash floods and 10 river or area floods. The county has received 7 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 (1978–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Elk Fire | Fire | Sep 28, 2024 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Flooding, And Landslides | Severe Storm | May 18, 2011 |
| Little Goose Fire | Fire | Aug 12, 2007 |
| Wy - Tongue River Wildfire - 11/19/2003 | Fire | Nov 19, 2003 |
| 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 |
|---|---|---|
| Flood | May 28, 2019 | 125.00K |
| Flash Flood | Jul 15, 2019 | 0.00K |
| Flood | May 29, 2018 | 0.00K |
| Flood | May 24, 2015 | 0.00K |
| Flash Flood | Jun 10, 2015 | 0.00K |
| Flash Flood | Jun 5, 2015 | 0.00K |
| Flash Flood | Jun 11, 2013 | 0.00K |
| Flood | Feb 22, 2012 | 0.00K |
| Flood | May 25, 2011 | 0.00K |
| Flash Flood | May 24, 2011 | 0.00K |
Flood — May 28, 2019
Several days of heavy rainfall over the Big Horn Mountains and adjacent foothills resulted in widespread flooding and major impacts along the foothills of Sheridan County.
Flash Flood — Jul 15, 2019
A slow moving thunderstorm over portions of Sheridan County produced large hail, strong wind gusts, heavy rain along with some flash flooding.
Flood — May 29, 2018
Heavy rain on the 27th and 28th resulted in the rapid rise of Big Goose Creek in Sheridan. |This resulted in many flooded areas with numerous basements flooded, as well as water flowing down streets adjacent to the creek.
Flood — May 24, 2015
Heavy rains combined with snow melt out of the Big Horn Mountains brought flooding to portions of Sheridan.
Flash Flood — Jun 10, 2015
A slow moving thunderstorm producing heavy rain resulted in some flash flooding across the western portions of Sheridan County.
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 Sheridan 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 Sheridan 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.