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Natural hazards · Colby

Colby, WI natural hazards

Most of the natural-hazard damage FEMA expects in Colby comes from inland flooding, and overall the risk is low for a U.S. community. 2 federal disasters brought FEMA money into town.

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

How exposed is Colby?

31
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Colby to be higher than in 31% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding44%Cold waves34%Tornadoes9%Everything else12%
By hazard

What Colby 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
Above average · higher than 53% of U.S. places
Recorded about once a year in the area

Cold waves

34% of expected damage
Below average · higher than 31% of U.S. places
Recorded about 9 times a year in the area

Tornadoes

9% of expected damage
Above average · higher than 71% of U.S. places
Recorded about once every 23 years in the area

Lower here

HailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingHurricanesDroughtAvalanchesTsunamisVolcanic 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 Colby flood?

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

of homes in flood zones
are insured
of all homes
are insured
No community discount. Colby isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Clark County.
Disasters that hit Colby

2 federal disasters brought FEMA money here

Disasters the President declared that paid out in Colby itself: aid to households, or repair grants to the Town of Colby.

Brought FEMA money into ColbyDeclared for Clark County only
2010

Severe Storms and Flooding

$7K to the Town of Colby for repairs
2002

Severe Storms and Flooding

$29K to the Town of Colby for repairs
Clark County has had 13 natural disasters declared since 1953, most often floods and severe storms.
Around Colby

Colby and the towns around it

Colby: Very low, mostly inland floodingAbbotsford: Very low, mostly inland floodingUnity: Low, mostly inland floodingGreen Grove: Low, mostly inland floodingMayville: Very low, mostly inland floodingHull: Low, mostly inland floodingHolton: Low, mostly inland floodingBrighton: Low, mostly inland floodingUnity: Low, mostly inland floodingSherman: Low, mostly inland floodingBeaver: Low, mostly inland floodingOwen: Low, mostly inland floodingLongwood: Low, mostly inland floodingCurtiss: Low, mostly inland floodingDorchester: Very low, mostly inland floodingLittle Black: Low, mostly inland floodingHoard: Low, mostly inland floodingFrankfort: Low, mostly inland floodingColby: Low, mostly inland flooding ColbyColbyAbbotsfordUnityGreen GroveMayvilleHull
Very lowLowModerateHighVery high
Colbymostly inland floodingLow
Green Grovemostly inland floodingLow
Hullmostly inland floodingLow
Unitymostly inland floodingLow
Colbymostly inland floodingVery low
Abbotsfordmostly inland floodingVery low
Mayvillemostly inland floodingVery low
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. Colby 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 Colby’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Colby. 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.

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You’re in Colby, WIClark CountyView boundary

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01
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