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FEMA flood zones · Nebraska

Perkins County, Nebraska Flood Zone Map

2% of Perkins 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 Perkins 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

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

Federal disasters

10 federal disaster declarations since 2001.

DisasterBegan
Severe Storms And FloodingJun 1, 2010
Severe Storms, Flooding, And TornadoesJun 5, 2009
Severe Storms And FloodingJun 11, 2007
Severe Winter StormsDec 19, 2006
Severe Winter StormNov 27, 2005
Hurricane Katrina EvacueesAug 29, 2005
Severe Storms And TornadoesJun 9, 2003
Severe Winter Storms, Flooding And TornadoesApr 10, 2001

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

Recorded flood events

11 since 1996: 11 flash floods.

EventDateDamage
Flash FloodAug 13, 2019—
Flash FloodJul 8, 2011$50,000
Flash FloodJun 13, 2007$150,000
Flash FloodJun 11, 2007$350,000
Flash FloodJul 3, 2007$15,000
Flash FloodJun 10, 2005—
Flash FloodJul 6, 2002—
Flash FloodJul 6, 2002$20,000

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

From the storm reports

Flash Flood · Aug 13, 2019. Thunderstorms developed early in the morning across the northwest Sandhills and continued to move across the Sandhills. Additional thunderstorms developed early afternoon across southwest Nebraska and moved southeastward into Kansas by late afternoon.

Flash Flood · Jul 8, 2011. Scattered thunderstorms brought large hail and damaging wind gusts across southwestern Nebraska during the early evening hours on July 8th. By late evening, heavy rain fell across portions of Perkins county resulting in Flash Flooding in Venango.

Flash Flood · Jun 13, 2007. First in a wave of systems to push out of Colorado and the Panhandle into Southwest Nebraska during the evening of June 11th through June 13th. The initial storm system brought large hail and very heavy rainfall. The storm system then developed into a heavy rainfall event causing extensive flash flooding.

Flash Flood · Jun 11, 2007. First in a wave of systems to push out of Colorado and the Panhandle into Southwest Nebraska during the evening of June 11th through June 13th. The initial storm system brought large hail and very heavy rainfall. The storm system then developed into a heavy rainfall event causing extensive flash flooding.

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 Perkins County

If a building in Perkins 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.