FEMA flood zones · Kansas

Ness County, Kansas Flood Zone Map

2 flood insurance claims·$0 paid·2 federal flood & hurricane disasters

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

Flash flooding from summer thunderstorms dominates the flood risk profile for Ness County, Kansas, accounting for 10 out of the 16 recorded flood events over the last 30 years, alongside 6 general flood events.

Local weather patterns driven by boundary layer heating, warm fronts, and stationary front boundaries frequently trigger these intense precipitation events. For example, a flash flood occurred on July 12, 2020, driven by boundary layer heating and an upper-level trough, while another severe flash flood developed on August 25, 2014, along a nearly stationary front.

Homeowners, real estate agents, and journalists should pay the most attention to properties located within FEMA Zone A, which accounts for the county's National Flood Insurance Program claims history, specifically recording two claims with an average payout of $0 and an average recorded water depth of 0 inches.

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

Federal disasters

19 federal disaster declarations since 1967, 2 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter Storm, Straight-line Winds, Flooding, And WildfiresMar 14, 2025
Severe Winter Storms And Straight-line WindsMar 17, 2022
Severe Storms And Straight Line WindsDec 15, 2021
Severe Storms, Straight-line Winds, Tornadoes, Flooding,landslides,and MudslidesApr 28, 2019
Ness County FireMar 4, 2017
Severe Winter StormJan 13, 2017
Severe Storms, Straight-line Winds, Tornadoes, And FloodingJul 22, 2013
SnowstormFeb 20, 2013

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

Recorded flood events

16 since 1996: 10 flash floods and 6 river or area floods.

EventDateDamage
Flash FloodJul 12, 2020—
FloodApr 17, 2016—
Flash FloodJun 27, 2014—
Flash FloodAug 25, 2014—
FloodJun 12, 2014—
Flash FloodAug 5, 2013—
FloodMay 16, 2004—
FloodJul 1, 2004—

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

From the storm reports

Flash Flood · Jul 12, 2020. Substantial boundary layer heating in the presence of an upper level short wave trough was enough to overcome somewhat warm air aloft. Thunderstorms became marginally severe at a few locations.

Flood · Apr 17, 2016. Rainfall during a 24 to 36 hour period resulted in eventual flooding.

Flash Flood · Jun 27, 2014. Thunderstorms became severe and spread across the area during the night.

Flash Flood · Aug 25, 2014. A nearly stationary front was the focus for thunderstorms during the late afternoon and evening with one severe storm reported.

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 Ness County

If a building in Ness 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.