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FEMA flood zones · Kansas

Grant County, Kansas Flood Zone Map

1 flood insurance claims·$1,882 paid·1 federal flood & hurricane disasters

FEMA’s digital flood map shows no high- or moderate-risk zones in Grant County. That can mean the area was never studied in detail or has no digital map, not that it can’t flood; the county floodplain administrator can say which.

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 Grant 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.

Federal disasters

9 federal disaster declarations since 1965, 1 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Storms And Straight Line WindsDec 15, 2021
Severe Winter Storm, Snowstorm, Straight-line Winds, And FloodingApr 28, 2017
Severe Winter Storm And Record And Near Record SnowMar 26, 2009
Severe Winter StormsDec 6, 2007
Severe Winter StormDec 28, 2006
Hurricane Katrina EvacuationSep 1, 2005
FloodingJun 23, 1965

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

Recorded flood events

12 since 1996: 6 flash floods and 6 river or area floods.

EventDateDamage
Flash FloodJun 15, 2023—
Flash FloodMay 25, 2019—
Flash FloodSep 20, 2018—
Flash FloodAug 18, 2018—
FloodJul 1, 2016—
FloodSep 10, 2015—
FloodJul 9, 2015—
FloodAug 8, 2015—

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

From the storm reports

Flash Flood · Jun 15, 2023. Storms rolled through western Kansas bringing large hail and damaging winds to western Kansas.

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 20, 2018. Storms developed along a cold front. Precipitable water values in the 75th to 90th percentile range ahead of the front set the stage for flash flooding in Grant County.

Flash Flood · Aug 18, 2018. A weak surface boundary was the focus for thunderstorm development as a short wave trough approached to enhance the lift of the unstable atmosphere.

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 Grant County

If a building in Grant 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.