Enter any address in Nemaha County, Kansas to see its FEMA flood zone
Flash flooding from thunderstorms dominates the flood character of Nemaha County. Over the past 30 years, NOAA Storm Events data shows 30 reported flash flood events compared to 7 general flood events. Recent examples include flash flooding across several counties following widespread thunderstorms on July 29, 2020, and flash flooding in far northeastern Kansas on June 24, 2021.
While general flooding also occurs, as seen with isolated flooding reported after heavy rain across eastern Kansas on July 25, 2025, flash flood events are more frequent. National Flood Insurance Program (NFIP) data indicates one claim in Zone A with an average payout of $26,036 and an average water depth of 0.0 feet.
Residents in Nemaha County should pay close attention to flood risk, particularly those in Zone A areas.
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.
Nemaha County, Kansas has recorded 37 flood-related events since 1996 according to NOAA's Storm Events Database, including 30 flash floods and 7 river or area floods. The county has received 16 federal disaster declarations, 3 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1967–2021)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Storms And Straight Line Winds | Severe Storm | Dec 15, 2021 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Straight-line Winds, Tornadoes, Flooding,landslides,and Mudslides | Severe Storm | Apr 28, 2019 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | Severe Storm | May 4, 2015 |
| Severe Winter Storms And Snowstorm | Severe Storm | Dec 22, 2009 |
| Severe Winter Storms | Severe Storm | Dec 6, 2007 |
| Severe Storms, Tornadoes, And Flooding | Severe Storm | May 4, 2007 |
| Hurricane Katrina Evacuation | Hurricane | Sep 1, 2005 |
| Severe Storms & Flooding | Flood | Jun 28, 1993 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Jul 25, 2025 | 0.00K |
| Flash Flood | Jun 24, 2021 | 0.00K |
| Flash Flood | Jul 29, 2020 | 0.00K |
| Flash Flood | Sep 24, 2016 | 0.00K |
| Flash Flood | Sep 13, 2016 | 0.00K |
| Flash Flood | May 11, 2016 | 0.00K |
| Flash Flood | May 25, 2015 | 0.00K |
| Flash Flood | Jun 5, 2015 | 0.00K |
| Flash Flood | Jun 4, 2015 | 0.00K |
| Flash Flood | May 29, 2013 | 0.00K |
Flood — Jul 25, 2025
Widespread heavy rain of 2 to 5 inches with locally higher amounts fell across much of eastern Kansas. Even with all the heavy rain, only isolated flooding was reported.
Flash Flood — Jun 24, 2021
Flash flooding occurred in far northeastern Kansas, and damaging wind occurred across the area due to multiple rounds of rain late in the evening on 6/24 through the overnight hours.
Flash Flood — Jul 29, 2020
Several counties experienced flash flooding following widespread thunderstorms during the afternoon of 7/29.
Flash Flood — Sep 24, 2016
Several rounds of heavy rainfall resulted in numerous flash-flooding reports.
Flash Flood — Sep 13, 2016
The month of September saw no severe reports of wind, hail or tornadoes. However, a few events caused heavy rainfall resulting in flash-flooding.
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 Nemaha County, Kansas:
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 Nemaha County, Kansas 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.