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Natural hazards · Oronoco

Oronoco, MN natural hazards

Most of the natural-hazard damage FEMA expects in Oronoco comes from inland flooding, and overall the risk is moderate for a U.S. community. Flood insurance has paid 3 claims here since 2004. 4 federal disasters brought FEMA money into town.

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

How exposed is Oronoco?

50
Moderate
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Oronoco to be higher than in 50% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding55%Tornadoes18%Cold waves16%Everything else11%
By hazard

What Oronoco faces

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

Inland flooding

55% of expected damage
Above average · higher than 67% of U.S. places
Recorded about once a year in the area

Tornadoes

18% of expected damage
Well above average · higher than 92% of U.S. places
Recorded about once every 18 years in the area

Cold waves

16% of expected damage
Above average · higher than 63% of U.S. places
Recorded about 10 times a year in the area

Lower here

HailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

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 Oronoco flood?

Every paid claim on a federal flood insurance policy in Oronoco, from FEMA’s records.

3paid claims since 2004
$93Kpaid to owners
1homes flooded more than once
20042026

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

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

What’s been done with FEMA grants

5flood-prone properties bought out and cleared
Disasters that hit Oronoco

4 federal disasters brought FEMA money here

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

Brought FEMA money into OronocoDeclared for Olmsted County only
2019

Severe Winter Storm, Straight-Line Winds, and Flooding

$561K to the City of Oronoco for repairs
2010

Severe Storms and Flooding

$63K to the City of Oronoco for repairs
2007

Severe Storms and Flooding

6 households applied for aid $4K aid approved
2004

Severe Storms and Flooding

3 households applied for aid $16K aid approved
Olmsted County has had 13 natural disasters declared since 1953, most often floods and severe storms.
Around Oronoco

Oronoco and the towns around it

Oronoco: Moderate, mostly inland floodingNew Haven: Low, mostly inland floodingPine Island: High, mostly inland floodingCascade: Moderate, mostly inland floodingFarmington: Moderate, mostly inland floodingMilton: High, mostly inland floodingKalmar: Low, mostly inland floodingRoscoe: High, mostly inland floodingOronoco: Moderate, mostly inland flooding OronocoOronocoNew Haven
Very lowLowModerateHighVery high
Oronocomostly inland floodingModerate
Oronocomostly inland floodingModerate
New Havenmostly inland floodingLow
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. Oronoco 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 Oronoco’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Oronoco. 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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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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