17 flood insurance claims·$49,942 paid·2 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Fremont County, Wyoming. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
Flash flooding from summer thunderstorms and general flooding dominate the historical flood profile of Fremont County, Wyoming. Over the last 30 years, the NOAA Storm Events Database recorded 45 general flood events resulting in one death, alongside 22 flash flood events.
Recent events illustrate these distinct hazards. In June 2023, a combination of heavy rain and mountain snowmelt caused minor flooding along the Wind River, remaining confined to low-lying areas without property damage or road closures. Summer convective storms also trigger significant local impacts, such as a July 2025 event where thunderstorms dropped 2 to 3 inches of rain near Moneta and Shoshoni, overwhelming highway culverts and sending water 4 feet deep across Highway 20/26 near Frenchie Draw. Additionally, a monsoonal storm in August 2025 brought rainfall rates as high as 6 inches per hour to Jeffrey City, producing flash flooding and ponding water in low spots.
Federal insurance claims data shows impacts across multiple zones. Properties located in FEMA Zone A recorded the highest impact with 8 claims, an average payout of $5,446, and an average recorded water depth of 13 inches. Properties in Zone D recorded 4 claims averaging $5,086 with an average water depth of 2 inches, while unshaded Zone X properties recorded 3 claims averaging $646 with a 2-inch average depth. Homeowners and real estate agents with properties in Zone A and low-lying areas near rivers or highway culverts should pay the most attention to flood risk.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
In flood insurance claims here that reported a flood depth, the average was 5 inches.
Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.
Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.
The worst year was 2010, with 6 claims and $10,205 paid, the year of Flooding.
Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.
29 NOAA storm reports from Fremont County describe what happened, in the words of the forecasters who covered it. Read the Wyoming flood stories →
6 federal disaster declarations since 2010, 2 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Flooding | Jun 7, 2017 |
| Lava Mountain Fire | Jul 25, 2016 |
| Severe Storms, Flooding, And Landslides | May 18, 2011 |
| Flooding | Jun 4, 2010 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
67 since 1996: 22 flash floods and 45 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | Jul 30, 2025 | $20,000 |
| Flash Flood | Aug 27, 2025 | — |
| Flood | Jun 22, 2023 | — |
| Flood | Jun 20, 2023 | — |
| Flood | Jun 11, 2022 | — |
| Flood | Jun 30, 2020 | — |
| Flood | Jun 29, 2020 | — |
| Flood | Jun 1, 2020 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · Jul 30, 2025. During the late evening of July 30, 2025, numerous thunderstorms developed over the Moneta area to the east of Shoshoni, WY and to the north of Highway 20/26. Radar derived rainfall estimates between 7 PM and 11 PM MDT were 2 to 3 inches, with an additional 1 inch of rainfall estimated the day before (July 29). This caused the highway culverts for Frenchie Draw to be overwhelmed. WYDOT employees at the time observ…
Flash Flood · Aug 27, 2025. A significant push of monsoonal moisture brought rainfall to much of Wyoming on 8/27/25. Thunderstorms with high rainfall rates near Jeffrey City led to flash flooding for portions of the town. The public reported ponding water in low spots throughout Jeffrey City. Radar estimates showed 1.0 to 1.5 inches of rain falling on the town of Jeffrey City within a 1 hour period, with up to 2 inches falling west of town.…
Flood · Jun 22, 2023. A combination of heavy rain and mountain snow melt brought minor flooding along the Wind River. The flooding remained in the low lying areas near the river and caused no property damage or road closure.
Flood · Jun 20, 2023. A combination of heavy rain and mountain snow melt brought minor flooding along the Wind River. The flooding remained in the low lying areas near the river and caused no property damage or road closure.
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Fremont County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.