Enter any address in Sioux County, Nebraska to see its FEMA flood zone
Sioux County, Nebraska has recorded 6 flood-related events since 1996 according to NOAA's Storm Events Database, including 6 flash floods. The county has received 13 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 (1991–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm And Straight-line Winds | Severe Storm | Apr 6, 2024 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Winter Storm, Straight-line Winds, And Flooding | Flood | Mar 9, 2019 |
| Severe Storms, Tornadoes, And Straight-line Winds | Severe Storm | Jun 12, 2017 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | May 6, 2015 |
| Severe Storms, Winter Storms, Tornadoes And Flooding | Severe Storm | Oct 2, 2013 |
| Region 23 Fire Complex | Fire | Aug 30, 2012 |
| Severe Storms And Flooding | Severe Storm | Jun 1, 2010 |
| Sioux County Fire Complex | Fire | Jul 28, 2006 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jul 12, 2018 | 0.00K |
| Flash Flood | Jun 10, 2015 | 0.00K |
| Flash Flood | Jun 7, 2010 | 0.00K |
| Flash Flood | Jul 11, 2009 | 0.00K |
| Flash Flood | Jul 2, 2009 | 0.00K |
| Flash Flood | Jun 18, 2008 | 0.00K |
Flash Flood — Jul 12, 2018
Torrential rainfall from slow-moving thunderstorms produced localized flash flooding in southwest Sioux County.
Flash Flood — Jun 10, 2015
Afternoon thunderstorms over Sioux County produced very heavy rain and large hail.
Flash Flood — Jun 7, 2010
Moist southerly winds brought 50 to mid 60 degree dew points into the area. Due to so much moisture present, low status formed and lasted through the early afternoon. The stratus caused the atmosphere to remain stable through the early afternoon until the stratus began to clear out. With the moisture still present during the afternoon and a strong jet stream overhead, thunderstorms that former ...
Flash Flood — Jul 11, 2009
A couple of storms produced hail and strong winds over parts of the western Nebraska panhandle.
Flash Flood — Jul 2, 2009
A couple of severe thunderstorms moved across parts of Sioux county and produced some hail and minor flooding.
Source: NOAA National Weather Service Storm Events Database.
FEMA assigns flood zone designations to areas in Sioux County, Nebraska:
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 Sioux County, Nebraska 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.