FEMA flood zones · Nebraska

Pierce County, Nebraska Flood Zone Map

12 flood insurance claims·$197,115 paid·6 federal flood & hurricane disasters

Less than 1% of Pierce 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 Pierce 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.

How Pierce County floods

General flooding events dominate the historical record in Pierce County, Nebraska, accounting for 13 out of 20 total recorded flood events over the last 30 years, alongside 7 flash flood events.

Notable historic events include a March 2019 bomb cyclone that combined frozen ground, 4 to 15 inches of remaining snow cover, rapid snowmelt, and 1 to 2.5 inches of rain over a 48-hour period to produce widespread, moderate to major historic flooding across eastern Nebraska. Additionally, a stationary front and theta-e advection brought heavy precipitation and flash flooding to the region in August 2021.

National Flood Insurance Program claims data indicates that properties located within Zone A have experienced the highest impact, recording 9 claims with an average payout of $27,597 and an average recorded water depth of 2 inches. Properties in Zone X and Zone X_UNSHADED have also recorded claims, with 2 claims in Zone X averaging $25,527 and 0 inches average recorded water depth, and 1 claim in Zone X_UNSHADED averaging $8,076 and 0 inches average recorded water depth. Residents and property owners in Zone A should pay the most attention to flood risk given the higher claim frequency and recorded water depths.

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

How deep the water got

outlet80″ door12″24″36″48″60″72″84″

In flood insurance claims here that reported a flood depth, the average was 2 inches.

Drawn to scale against an 80-inch door. Even a few inches soaks flooring, the bottom of the drywall and anything plugged in near the floor.

Average of the depths reported on claims (zero and implausible values left out); FEMA’s record doesn’t say exactly where each depth was measured. Source: OpenFEMA NFIP claims.

Flood claims, year by year

The worst year was 2019, with 7 claims and $181,009 paid, the year of Severe Winter Storm, Straight-line Winds, and Flooding.

1994: 1 claims2000: 1 claims2007: 1 claims2008: 1 claims2010: 1 claims2019: 7 claims1980199020002010

Bar height is scaled by square root so ordinary years stay visible next to the worst one. NFIP claims by year of loss. Source: OpenFEMA.

In their words

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

Federal disasters

17 federal disaster declarations since 1967, 6 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Storms And Straight-line WindsMay 12, 2022
Severe Winter Storm, Straight-line Winds, And FloodingMar 9, 2019
Severe Winter Storm And Straight-line WindsApr 13, 2018
Severe Storms And FloodingJun 1, 2010
Severe Storms, Ice Jams, And FloodingMar 6, 2010
Severe Winter Storms And SnowstormDec 22, 2009
Severe Winter StormsDec 19, 2006
Severe Winter StormNov 27, 2005

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

Recorded flood events

20 since 1996: 7 flash floods and 13 river or area floods.

EventDateDamage
FloodAug 31, 2021—
Flash FloodMar 13, 2019$475,000
FloodMar 13, 2019—
FloodOct 7, 2017$5,000
Flash FloodAug 21, 2013—
FloodFeb 18, 2011—
FloodJul 22, 2010—
FloodJun 12, 2010$10,000

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

From the storm reports

Flood · Aug 31, 2021. Theta-e advection and a stationery front helped initiate storms across eastern Nebraska. The largest hail reports were for 2.5 inch hail and peak wind gusts were near 70 mph. Additionally, flash flooding was reported in Cedar County due to heavy precipitation.

Flash Flood · Mar 13, 2019. A 971mb bomb cyclone moved out of the central Rockies on Wednesday, March 13, 2019 and helped to create widespread, moderate to major, and in many cases historic, flooding across eastern Nebraska and western Iowa. From 4 to 15 inches of snow cover remained across the mid Missouri River valley, and the ground was frozen with existing frost depths of 15 to 23 inches. Warm temperatures allowed all of the snow to rapi…

Flood · Mar 13, 2019. A 971mb bomb cyclone moved out of the central Rockies on Wednesday, March 13, 2019 and helped to create widespread, moderate to major, and in many cases historic, flooding across eastern Nebraska and western Iowa. From 4 to 15 inches of snow cover remained across the mid Missouri River valley, and the ground was frozen with existing frost depths of 15 to 23 inches. Warm temperatures allowed all of the snow to rapi…

Flood · Oct 7, 2017. Two heavy rainfall events occurred on the 6th and 7th of the month. No flash flood warnings were issued however significant river flooding occurred along the N.F. Elkhorn River, Wahoo Creek and the Missouri River. Of these rivers the flooding was most significant along the N.F. Elkhorn River where moderate flooding was reported. This led to significant lowland flooding which included many county roads in Pierce Co…

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 Pierce County

If a building in Pierce 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.