4 flood insurance claims·$190,554 paid
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 Anderson County, Kansas. 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.
Flash flooding from slow-moving thunderstorms dominates the flood profile of Anderson County, accounting for 62 of the 80 recorded flood events over the last 30 years, alongside 18 general flood events.
Recent history illustrates this pattern. Persistent rainfall on May 30, 2024, brought totals of 3 to 5 inches and caused isolated flooding across the county. Subsequently, a slow-moving front on June 3, 2025, delivered 2 to 6 inches of rain, resulting in water rescues and street flooding. Another round of slow-moving thunderstorms dropped over 3 inches of rain on May 19, 2025, triggering flash floods.
Historical National Flood Insurance Program claims reflect risk across different zones. Zone A properties recorded 3 claims with an average payout of $30,480 and an average recorded water depth of 0 inches. Zone X properties recorded 1 claim with an average payout of $99,113 and an average recorded water depth of 21 inches. Homeowners and real estate agents in both high-risk Zone A and moderate-to-low risk Zone X areas should pay close attention to these localized thunderstorm and flash flood risks.
Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.
In flood insurance claims here that reported a flood depth, the average was 21 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.
14 NOAA storm reports from Anderson County describe what happened, in the words of the forecasters who covered it. Read the Kansas flood stories →
18 federal disaster declarations since 1967.
| Disaster | Began |
|---|---|
| Severe Storms, Straight-line Winds, Tornadoes, And Flooding | Apr 25, 2024 |
| Tornadoes And Flooding | May 9, 2019 |
| Severe Storms, Straight-line Winds, Tornadoes, Flooding,landslides,and Mudslides | Apr 28, 2019 |
| Severe Storms, Straight-line Winds, And Flooding | Oct 4, 2018 |
| Severe Winter Storms And Snowstorm | Dec 22, 2009 |
| Severe Storms And Flooding | Jul 8, 2009 |
| Severe Storms, Flooding, Straight-line Winds, And Tornadoes | Apr 25, 2009 |
| Severe Storms, Flooding, And Tornadoes | Sep 11, 2008 |
Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.
80 since 1996: 62 flash floods and 18 river or area floods.
| Event | Date | Damage |
|---|---|---|
| Flash Flood | May 19, 2025 | — |
| Flood | Jun 3, 2025 | $20,000 |
| Flash Flood | Jun 3, 2025 | $50,000 |
| Flash Flood | May 30, 2024 | — |
| Flash Flood | Jun 9, 2024 | — |
| Flash Flood | Jun 28, 2021 | — |
| Flash Flood | Jun 25, 2021 | — |
| Flash Flood | Apr 30, 2019 | — |
— = no damage estimate in the record. Source: NOAA Storm Events Database.
Flash Flood · May 19, 2025. Slow moving severe t-storms developed during the late afternoon on May 19th. The storms produced some large hail reports and did produce one small tornado that did tree damage in Wabaunsee County. Otherwise, the greatest impact ended up being very heavy rains which produced over 3 inches of rain in spots and flash flooding.
Flood · Jun 3, 2025. On 6/3, slow moving front resulted in several rounds of thunderstorms across northeast Kansas. This resulted in rainfall amounts of 2 to 6 inches and a few instances of water rescues and street flooding.
Flash Flood · Jun 3, 2025. On 6/3, slow moving front resulted in several rounds of thunderstorms across northeast Kansas. This resulted in rainfall amounts of 2 to 6 inches and a few instances of water rescues and street flooding.
Flash Flood · May 30, 2024. Persistent and efficient rainfall across parts of east-central Kansas resulted in 3 to 5 inch rainfall totals and isolated flooding in Anderson County. Occurred late evening on the 30th into the 31st.
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 Anderson 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.