Enter any address in Carbon County, Utah to see its FEMA flood zone
Flash flooding from thunderstorms is the primary flood hazard in Carbon County. Over the past 30 years, the NOAA Storm Events Database has recorded 18 flash flood events, resulting in two fatalities. For example, flash flooding occurred in June 2024 following thunderstorms, and again in October 2021 due to a storm system.
While flash flooding is frequent, other flood types have also been documented. National Flood Insurance Program (NFIP) claims data indicates that properties in Zone X and Zone X_UNSHADED have experienced significant payouts, with average claims of $147,198 and $13,332 respectively, and water depths averaging 1.5 feet and 1.0 foot. Claims in Zone A and Zone X_SHADED showed no average payout or water depth. Homeowners in areas designated as Zone X or Zone X_UNSHADED, as well as those in Zone A, should pay close attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
3 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Carbon County, Utah has recorded 19 flood-related events since 1996 according to NOAA's Storm Events Database, including 18 flash floods and 1 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 (1977–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Hurricane Katrina Evacuation | Coastal Storm | Aug 29, 2005 |
| Severe Storms, Landslides & Flooding | Flood | Apr 13, 1983 |
| Drought | Drought | Jan 20, 1977 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 21, 2024 | 0.00K |
| Flash Flood | Aug 4, 2024 | 1.00K |
| Flash Flood | Jun 19, 2022 | 0.00K |
| Flash Flood | Sep 11, 2021 | 0.00K |
| Flash Flood | Oct 6, 2021 | 0.00K |
| Flash Flood | Jul 21, 2017 | 0.00K |
| Flash Flood | Sep 22, 2016 | 4.00M |
| Flash Flood | Sep 3, 2016 | 0.00K |
| Flash Flood | Sep 27, 2014 | 1.10M |
| Flash Flood | Jul 15, 2014 | 5.00K |
Flash Flood — Jun 21, 2024
Thunderstorms brought heavy rain, hail, gusty winds, and flash flooding to portions of southern and eastern Utah.
Flash Flood — Aug 4, 2024
Thunderstorms brought strong winds to portions of Utah and flash flooding in Carbon County.
Flash Flood — Jun 19, 2022
A widespread high wind event across Utah was followed by strong thunderstorms associated with a system spanning a three-day period. These storms produced numerous instances of severe wind gusts, in addition to a tornado, a report of hail, and flash flooding.
Flash Flood — Sep 11, 2021
Thunderstorms brought strong wind gusts across portions of northern Utah and flash flooding to portions of southern Utah.
Flash Flood — Oct 6, 2021
A storm system brought flash flooding and high winds to portions of southern Utah and severe thunderstorm wind gusts to portions of northern Utah.
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 Carbon County, Utah:
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 Carbon County, Utah 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.