FEMA flood zones · Kansas

Comanche County, Kansas Flood Zone Map

Less than 1% of Comanche County’s area is in FEMA’s high-risk flood zones.

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Comanche 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.

How Comanche County floods

Flash flooding and general flooding from severe weather systems evenly dominate the flood profile of Comanche County. According to NOAA Storm Events Database records from the past 30 years, the area has experienced 10 flood events and 10 flash flood events.

Recent weather patterns illustrate this activity. In August 2025, multiple significant events impacted the region. On August 28, 2025, an upper-level trough with high moisture produced severe hail, winds, and a multicellular storm regime that resulted in widespread heavy rainfall and flash flooding across multiple counties. Earlier that month, on August 25, 2025, persistent showers driven by high precipitable water values of up to 1.8 inches triggered a flood watch and subsequent flooding within Comanche County.

Homeowners, real estate agents, and journalists should pay close attention to properties vulnerable to heavy rainfall and localized flash flooding from severe summer thunderstorms.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

In their words

1 NOAA storm reports from Comanche County describe what happened, in the words of the forecasters who covered it. Read the Kansas flood stories →

Federal disasters

22 federal disaster declarations since 1973.

DisasterBegan
Severe Storms, Straight-line Winds, And FloodingJul 17, 2025
Severe Storms, Straight-line Winds, Tornadoes, And FloodingJun 26, 2024
Severe Storms, Straight-line Winds, Tornadoes, And FloodingJul 14, 2023
Severe Winter Storms And Straight-line WindsMar 17, 2022
Severe Storms, Straight-line Winds, Tornadoes, Flooding,landslides,and MudslidesApr 28, 2019
Comanche County FireMar 4, 2017
Severe Winter StormJan 13, 2017
Anderson Creek FireMar 23, 2016

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

20 since 1996: 10 flash floods and 10 river or area floods.

EventDateDamage
FloodAug 28, 2025—
Flash FloodAug 25, 2025—
Flash FloodJun 30, 2024—
Flash FloodMay 25, 2019—
Flash FloodSep 4, 2018—
Flash FloodJun 30, 2014—
FloodJun 2, 2014—
FloodJul 1, 2014—

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flood · Aug 28, 2025. An upper-level trough was positioned in northern Kansas with a 700 mb temperature gradient stretching into SW Kansas with a wedge of high moisture. On the afternoon of the 27th, supercells initiated and produced severe hail and winds. Into the evening, it became a more multicellular regime with widespread heavy rainfall. This produced flash flooding in multiple counties.

Flash Flood · Aug 25, 2025. A flood watch was in effect as nearly the whole county warning area as widespread storms lasted into the night. Precipitable water values were as high as 1.8 inches. These showers created some flooding in Comanche county.

Flash Flood · May 25, 2019. A s/wv trough initiated thunderstorms across the Oklahoma and Texas panhandles and this activity spread northeast across the area.

Flash Flood · Sep 4, 2018. An organized convective cluster developed along an advancing cold front caused flash flooding in Comanche County.

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Comanche County

If a building in Comanche 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.