FEMA flood zones · Nebraska

Gosper County, Nebraska Flood Zone Map

3 federal flood & hurricane disasters

7% of Gosper 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 Gosper County, Nebraska. 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.

In their words

7 NOAA storm reports from Gosper County describe what happened, in the words of the forecasters who covered it. Read the Nebraska flood stories →

Federal disasters

14 federal disaster declarations since 1967, 3 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter Storm, Straight-line Winds, And FloodingMar 9, 2019
Severe Winter Storm And Straight-line WindsApr 13, 2018
Severe Winter Storm And Straight-line WindsApr 29, 2017
Severe Winter Storms And SnowstormDec 22, 2009
Severe Storms, Tornadoes, And FloodingMay 22, 2008
Severe Winter StormsDec 19, 2006
Severe Winter StormNov 27, 2005
Hurricane Katrina EvacueesAug 29, 2005

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

Recorded flood events

8 since 1996: 7 flash floods and 1 river or area floods.

EventDateDamage
Flash FloodJul 8, 2019$100,000
Flash FloodJul 8, 2019—
Flash FloodJul 4, 2019$25,000
Flash FloodMay 29, 2008$25,000
Flash FloodMay 23, 2008$25,000
Flash FloodJun 4, 2008$5,000
Flash FloodMay 11, 2005$1.0M
FloodJun 15, 1996$23,000

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

From the storm reports

Flash Flood · Jul 8, 2019. Excessive rainfall, flash flooding, and severe winds occurred on this Monday afternoon and evening. Widely scattered thunderstorms began forming around 1 PM CST along and west of Highway 183. By 2 PM CST, a persistent line segment of thunderstorms began affecting western Dawson county. Over the following four hours, this southwest-northeast oriented line slowly crept east across Dawson county into western Buffalo…

Flash Flood · Jul 4, 2019. Hail up to the size of golf balls and damaging winds occurred on this Thursday night. Just after 9 PM CST, scattered, small thunderstorms began developing between Elwood and Minden. The storms increased in size and combined into an east-west oriented multi-cell line that was stationary across Gosper, Phelps, and Kearney counties. This line remained stationary through 1 AM CST Friday. However, between midnight and…

Flash Flood · May 29, 2008. A significant severe weather outbreak occurred during the late afternoon and evening of May 29th. Several tornadoes were reported from near Elwood to north of York. Two tornadoes caused damage in the city of Kearney and one occurred just to the south of town. Another tornado damaged homes and power poles near Aurora. Another tornado started in north-central Kansas and entered south-central Nebraska near Hubbell.…

Flash Flood · May 23, 2008. Large upper level trough over the western U.S. continued to eject energy out over the Central Plains, with a surface low remaining anchored over eastern Colorado with a stationary boundary draped east through the region. Storms once again initially developed during the early afternoon near the dry line over western Kansas and drifted east; with the increase of the low level jet helping storms which had developed…

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 Gosper County

If a building in Gosper 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.