FEMA flood zones · Kansas

Greeley County, Kansas Flood Zone Map

FEMA’s digital flood map shows no high- or moderate-risk zones in Greeley 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 Greeley 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 Greeley County floods

Flash flooding from summer thunderstorms dominates the flood profile of Greeley County, Kansas, backed by 13 flash flood events and 6 general flood events recorded over the last 30 years.

Local flood risks are driven by prolonged and heavy rainfall events that overwhelm normally dry draws and road intersections. For example, a heavy rain event on September 10, 2025, brought three to four inches of rainfall that caused a normally dry draw north-northeast of Tribune to flood over. Similarly, prolonged moderate rainfall dropped close to four inches near Horace on July 29, 2022, resulting in flooding at the intersection of County Road 12 and Road O.

Property owners and real estate professionals should pay the closest attention to locations near normally dry draws, low-lying intersections, and areas vulnerable to rapid runoff from intense convective storms.

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

In their words

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

Federal disasters

10 federal disaster declarations since 2005.

DisasterBegan
Severe Winter Storm, Straight-line Winds, Flooding, And WildfiresMar 14, 2025
Severe Storms, Straight-line Winds, Tornadoes, And FloodingJun 26, 2024
Severe Storms, Straight-line Winds, Tornadoes, And FloodingJul 14, 2023
Severe Storms And Straight Line WindsDec 15, 2021
Severe Winter Storm, Snowstorm, Straight-line Winds, And FloodingApr 28, 2017
Severe Winter StormsDec 6, 2007
Severe Winter StormDec 28, 2006
Hurricane Katrina EvacuationSep 1, 2005

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

Recorded flood events

19 since 1996: 13 flash floods and 6 river or area floods.

EventDateDamage
FloodSep 10, 2025$2,000
FloodJul 29, 2022—
Flash FloodJul 25, 2019—
Flash FloodJul 20, 2019—
FloodMay 28, 2016—
FloodMay 27, 2016—
Flash FloodMay 27, 2016—
Flash FloodSep 4, 2016—

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

From the storm reports

Flood · Sep 10, 2025. Thunderstorm activity spread east into Northwest Kansas from Colorado. Hail up to tennis ball size was reported near Sharon Springs. Dust storm conditions near Sharon Springs were associated with one of the thunderstorms. Winds up to 75 MPH were reported, with the highest reported gust north-northwest of Ruleton.||Prolonged heavy rainfall during the night caused flooding to occur north-northeast of Tribune. Th…

Flood · Jul 29, 2022. Prolonged moderate rainfall occurred over West Central Kansas, beginning in the morning, lasting into late afternoon. Close to four inches of rainfall was reported near Horace, KS. The prolonged moderate rainfall caused flooding over the CR 12 and O intersection.

Flash Flood · Jul 25, 2019. Thunderstorms produce isolated flash flooding and some hail near Horace, KS.

Flash Flood · Jul 20, 2019. A severe thunderstorm produced a wind gust to 60 mph and localized flash flooding in Greeley 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 Greeley County

If a building in Greeley 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.