Natural hazards · Walnut Grove

Walnut Grove, NE natural hazards

Most of the natural-hazard damage FEMA expects in Walnut Grove comes from inland flooding, and overall the risk is high for a U.S. community. 1 federal disaster brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Walnut Grove?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Walnut Grove to be higher than in 71% of U.S. communities, mostly from inland flooding.

Inland flooding44%Tornadoes12%Cold waves11%Drought10%Hail10%Everything else13%

By hazard

What Walnut Grove faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Inland flooding

44% of expected damage

Well above average · higher than 79% of U.S. places

Recorded about once a year in the area

Tornadoes

12% of expected damage

Well above average · higher than 97% of U.S. places

Recorded about once every 3 years in the area

Cold waves

11% of expected damage

Well below average · higher than 20% of U.S. places

Recorded about 6 times a year in the area

Drought

10% of expected damage

Recorded about 37 times a year in the area

Hail

10% of expected damage

Well above average · higher than 84% of U.S. places

Recorded about 5 times a year in the area

Lower here

Ice stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Walnut Grove flood?

FEMA's records show no paid flood insurance claims in Walnut Grove.

of homes in flood zones
are insured

of all homes
are insured

No community discount. Walnut Grove isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Knox County.

Disasters that hit Walnut Grove

1 federal disaster brought FEMA money here

Disasters the President declared that paid out in Walnut Grove itself: aid to households, or repair grants to the Township of Walnut Grove.

Brought FEMA money into Walnut GroveDeclared for Knox County only

2019

Severe Winter Storm, Straight-Line Winds, and Flooding

$89K to the Township of Walnut Grove for repairs

Knox County has had 14 natural disasters declared since 1953, most often severe storms and floods.

Around Walnut Grove

Walnut Grove and the towns around it

Very lowLowModerateHighVery high

Walnut Grovemostly inland floodingHigh

Loganmostly inland floodingHigh

Washingtonmostly inland floodingHigh

Jeffersonmostly inland floodingHigh

Iowamostly droughtLow

Willowdalemostly droughtLow

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Walnut Grove is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Walnut Grove’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of Walnut Grove. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.