Enter any address in Wibaux County, Montana to see its FEMA flood zone
Flash flooding from heavy rainfall events is the dominant flood character in Wibaux County. Between 2000 and 2023, NOAA Storm Events data recorded 18 events categorized as either Flood or Flash Flood. For example, in May 2011, widespread heavy rainfall totaling 2 to 4 inches over several days led to flooding on local creeks and streams. Another event in June 2010 brought heavy rainfall and severe thunderstorms to the region.
National Flood Insurance Program (NFIP) claims data shows that some flood damage has occurred in areas with an unknown flood zone designation. These claims averaged $2,418 and involved an average water depth of 1.0 foot. Homeowners in areas with unknown flood zone designations, or those located near creeks and streams, should pay the most attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
Wibaux County, Montana has recorded 18 flood-related events since 1996 according to NOAA's Storm Events Database, including 8 flash floods and 10 river or area floods. The county has received 5 federal disaster declarations. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (2000–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms And Flooding | Severe Storm | Apr 4, 2011 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Winter Storms | Severe Storm | Oct 31, 2000 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | May 29, 2011 | 0.00K |
| Flood | May 23, 2011 | 0.00K |
| Flood | May 20, 2011 | 0.00K |
| Flood | Mar 19, 2011 | 0.00K |
| Flash Flood | Jun 19, 2011 | 0.00K |
| Flood | May 18, 2011 | 0.00K |
| Flood | Mar 17, 2011 | 0.00K |
| Flood | Mar 16, 2011 | 0.00K |
| Flood | Jun 17, 2010 | 0.00K |
| Flash Flood | Jun 28, 2005 | — |
Flood — May 29, 2011
An additional two inches of rain fell across the area, bringing flooding to creeks and streams in the area.
Flood — May 23, 2011
A slow moving upper level low pressure system was tapping into an area of moisture that was surging north from the southern Plains states. 2 to 4 inches of rain fell across the area between May 20th and the 22nd.
Flood — May 20, 2011
This flooding occurred in a large portion of northeast Montana.
Flood — Mar 19, 2011
Flooding continued on the Yellowstone River due mainly to ice jams.
Flash Flood — Jun 19, 2011
Another group of storms approached from the southwest over a very moist and unstable air mass.
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 Wibaux County, Montana:
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 Wibaux County, Montana 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.