3 flood insurance claims·$1,972 paid·6 federal flood & hurricane disasters
Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.
Shaded areas are FEMA’s mapped flood hazard zones in and around Johnson County, Nebraska. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.
In flood insurance claims here that reported a flood depth, the average was 1 inches.
Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.
Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.
The worst year was 1982, with 1 claims and $1,972 paid.
Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.
3 NOAA storm reports from Johnson County describe what happened, in the words of the forecasters who covered it. Read the Nebraska flood stories →
22 federal disaster declarations since 1967, 6 of them floods, coastal storms or hurricanes.
| Disaster | Began |
|---|---|
| Severe Winter Storm And Straight-line Winds | Mar 18, 2025 |
| Severe Storms, Straight-line Winds, And Tornadoes | Dec 15, 2021 |
| Severe Winter Storm, Straight-line Winds, And Flooding | Mar 9, 2019 |
| Severe Storms, Tornadoes, Straight-line Winds, And Flooding | May 6, 2015 |
| Severe Storms, Flooding, Tornado, And Straight-lin | Sep 13, 2010 |
| Severe Storms, Ice Jams, And Flooding | Mar 6, 2010 |
| Severe Winter Storms And Snowstorm | Dec 22, 2009 |
| Severe Winter Storm | Nov 16, 2009 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
11 since 1996: 8 flash floods and 3 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flood | Jun 1, 2023 | — |
| Flood | Oct 8, 2018 | — |
| Flash Flood | Jun 4, 2015 | $20,000 |
| Flood | Apr 25, 2008 | $1.0M |
| Flash Flood | May 6, 2007 | $100,000 |
| Flash Flood | May 29, 2004 | — |
| Flash Flood | May 4, 2001 | — |
| Flash Flood | May 26, 1996 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flood · Jun 1, 2023. Heavy rain led to a very localized flash flood in rural Johnson County.
Flood · Oct 8, 2018. Heavy rain occurred across the area on October 8th.
Flash Flood · Jun 4, 2015. A very moist and unstable atmosphere developed over eastern Nebraska on June 4th as southerly winds brought rich gulf moisture northward into the region. This moisture interacted with a frontal boundary across southern Nebraska and produced several rounds of heavy thunderstorms with the first in the morning, and then again in the late afternoon and evening. The heavy rainfall produced flash flooding in many of the…
Flood · Apr 25, 2008. An area of thunderstorms, including a few supercells, developed along a cold front that was pushing into eastern Nebraska and also along a weak warm front that extended just ahead of the cold front. The storms were fed by a very strong low level jet that increased in intensity and helped create the wind shear favorable for the supercells, including one which produced a short-lived tornado in Johnson, Nebraska. T…
National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.
Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.
If a building in Johnson County is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.
Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.