FloodZoneMap.org

Nemaha County, Nebraska Flood Zones

Check an Address in Nemaha County

Enter any address in Nemaha County, Nebraska to see its FEMA flood zone

The Flooding Character of Nemaha County

River flooding along the Missouri River is a significant flood character for Nemaha County, Nebraska. Recent events include ongoing river flooding in early July 2024, impacting sections of I-29, and earlier in June 2024, when heavy thunderstorms caused widespread issues. Flash flooding has also occurred, such as in May 2023 following severe thunderstorms, and in May 2019 when heavy rainfall led to river flooding on local streams.

Homeowners in Zone A, which has seen the highest number of National Flood Insurance Program claims with an average payout of $15,752 and an average water depth of 1.6 feet, should pay the most attention. Residents in Zone X_Unshaded and Zone Unknown should also be aware of potential flood risks, as claims have been filed in these areas as well.

Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.

Read First-Hand Flood Stories from Nemaha County

22 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.

Read Nebraska flood stories →

Flood Risk Data for Nemaha County

Nemaha County, Nebraska has recorded 69 flood-related events since 1996 according to NOAA's Storm Events Database, including 14 flash floods and 55 river or area floods. The county has received 25 federal disaster declarations, 7 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.

Nemaha County Disaster History

FEMA Disaster Declarations (1973–2025)

Disaster Declarations
25
Flood/Coastal Disasters
7
Latest Disaster
Severe Storms, Straight-line Winds, And Flooding (2025-08-08)

Source: OpenFEMA Disaster Declarations Summaries.

Recent Disaster Declarations in Nemaha County

DeclarationTypeDate
Severe Storms, Straight-line Winds, And FloodingSevere StormAug 8, 2025
Severe Storms, Straight-line Winds, Tornadoes, And FloodingSevere StormJun 19, 2024
Severe Storms, Straight-line Winds, And TornadoesSevere StormDec 15, 2021
Covid-19BiologicalJan 20, 2020
Covid-19 PandemicBiologicalJan 20, 2020
Severe Winter Storm, Straight-line Winds, And FloodingFloodMar 9, 2019
Severe Storms, Tornadoes, Straight-line Winds, And FloodingSevere StormMay 6, 2015
Severe Storms, Tornadoes, Straight-line Winds, And FloodingSevere StormJun 1, 2014
FloodingFloodJun 17, 2011
FloodingFloodMay 24, 2011

Recorded Flood Events in Nemaha County

NOAA Storm Events Database (1996–2025)

Total Flood Events
69
River/Area Floods
55
Flash Floods
14
Total Property Damage
$3.4M
Flood Deaths
1

Source: NOAA National Weather Service Storm Events Database.

Recent Flood Events in Nemaha County

TypeDateDamage
FloodJun 24, 202410.00K
FloodJul 1, 20240.00K
Flash FloodMay 12, 20230.00K
Flash FloodJun 27, 20200.00K
Flash FloodMay 24, 20190.00K
FloodMar 13, 20190.00K
Flash FloodJun 4, 20190.00K
FloodApr 30, 20160.00K
FloodMay 27, 20160.00K
FloodMay 1, 20160.00K

Nemaha County Flood History

Flood — Jun 24, 2024

A series of shortwave troughs traversing the northern CONUS brought unsettled weather to the area for the end of June. On the 21st, a stationary front was draped across northeast Nebraska into Iowa. Ahead of one of the aforementioned shortwave troughs, several rounds of strong thunderstorms developed near this frontal zone and moved across northeast Nebraska. At 8 pm on the 21st, radar imagery ...

Flood — Jul 1, 2024

At the beginning of July, river flooding was still ongoing along portions of the Missouri River extending from east-central Nebraska/southwest Iowa to the southern Nebraska border. Most of the length of the river crested at the end of June, so the greatest impacts are addressed in June StormData. However, sections of I-29 and the I-29/I680 junction remained closed through the first week of July...

Flash Flood — May 12, 2023

A strong low-pressure system which had been slowly moving east off the Rocky Mountains finally progressed into central Nebraska. This left eastern Nebraska in the warm sector as a warm front moved north into the area. The SPC issued an Enhanced Risk for severe weather with a 30% hatched for severe hail. There ended up being 19 confirmed tornadoes (3 EF2, 8 EF1, 4 EF0, 4 EFU). There were numerou...

Flash Flood — Jun 27, 2020

Scattered storms produced a couple of severe reports and led to flash flooding.

Flash Flood — May 24, 2019

Nocturnal thunderstorms moved through during the early morning hours of Friday, May 24, 2019. A tornado watch was in effect. A flash flood watch was also in effect. A squall line developed, with several possible embedded tornadic rotations. 24 hour rainfall amounts ranged from 2 to 8.75 inches, the highest amount in southwest Iowa. River flooding developed on local streams, including the West ...

Source: NOAA National Weather Service Storm Events Database.

Nemaha County NFIP Flood Insurance Claims

Total Claims Filed
43
Total Paid Out
$416,052
Avg Claim
$17,335
Avg Water Depth
4.8 ft

Claims by Flood Zone

A Zones (High Risk)
26
X Unshaded (Low)
2

Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).

Flood Zone Types in Nemaha County

FEMA assigns flood zone designations to areas in Nemaha 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.

View all flood zone types →

Flood Insurance in Nemaha County

Properties in Nemaha 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.