Home › Oregon › Columbia County

Columbia County, Oregon

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
21st of 36highest risk in Oregon
$34Mexpected losses a year
14federal declarations
1 in 53homes with flood insurance
Photo: U.S. Geological Survey, CC0

Columbia County, Oregon has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 71% of US counties. It ranks 21st of 36 counties in Oregon. The costliest hazards here are earthquakes, inland flooding and heat waves. FEMA estimates about $34 million a year in expected losses, or roughly $645 per resident. Since 1964 it has been included in 14 federal disaster or emergency declarations for natural events (13 major disasters). The most recent was in September 2020 (wildfires and straight-line winds). About 1 in 53 homes here carry federal flood insurance (467 policies). Since 1978, federal flood insurance has paid about $21 million on 432 claims here, including $17 million for floods in 2007.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Columbia County

Earthquake

Moderate
$14.8 million a yearExpected losses. Damaging events about once every 45 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.
$14.1 million a yearExpected losses. Damaging events about once every 2 years.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Heat wave

Moderate
$3.7 million a yearExpected losses. Damaging events about 5 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
HazardRatingScoreExpected loss a year
EarthquakeModerate94.5
$15M
Inland floodingLow68.2
$14M
Heat waveModerate90.5
$4M
Cold waveLow30.8
$507K
Strong windLow23.7
$255K
Coastal floodingLow50.4
$159K
TornadoVery Low13.3
$130K
LandslideModerate89.4
$62K
Ice stormLow38.8
$58K
Winter weatherLow27.1
$30K
WildfireVery Low30.5
$17K
LightningVery Low4.0
$16K
HailVery Low4.8
$13K
Volcanic activityVery Low81.8
$1K
AvalancheVery Low4.7
$2

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively low and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Columbia County. 2020s bar runs to November 2026.

By type

Severe Storm8
Flood4
Coastal Storm1
Fire1

Most recent

Sep 15, 2020Wildfires and Straight-Line WindsMajor disaster
Aug 8, 2017Severe Winter Storms, Flooding, Landslides, and MudslidesMajor disaster
Feb 17, 2016Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disaster
Mar 2, 2012Severe Winter Storm, Flooding, Landslides, and MudslidesMajor disaster
Mar 2, 2009Severe Winter Storm, Record and Near Record SnowMajor disaster
Dec 8, 2007Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Feb 22, 2007Severe Winter Storm and FloodingMajor disaster
Mar 20, 2006Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Sep 7, 2005Hurricane Katrina EvacuationEmergency
Feb 19, 2004Severe Winter StormsMajor disaster
Show all 14
Mar 19, 1996Severe Storms and High WindsMajor disaster
Feb 9, 1996High Winds, Severe Storms and FloodingMajor disaster
Jan 25, 1974Severe Storms, Snowmelt & FloodingMajor disaster
Dec 24, 1964Heavy Rains & FloodingMajor disaster

Oregon also had 42 statewide declarations that did not name single counties.

Storm history since 1955

Tornado risk by county ›

The National Weather Service has logged 29 storm reports in Columbia County since 1955, with 1 death and 2 injuries and about $39.4 million in reported damage. The strongest on record here was an F1 tornado on August 16, 1978.

5tornadoes
3hail reports, largest 1 inches
0damaging thunderstorm winds
12floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Aug 16, 1978F1–0 / 0
Nov 10, 2020EF0St Helens0 / 0
Apr 28, 2000F0St Helens1 / 0
Nov 10, 1965F0–0 / 0
Jun 6, 2004F0Rainier0 / 0

Most damaging storms

DateTypeNearDamage
Dec 3, 2007FloodVernonia$36M
Dec 9, 2015FloodVernonia$2M
Dec 8, 2015FloodVernonia$824K
Dec 7, 2015FloodVernonia$124K
Nov 10, 2020TornadoSt Helens$40K
Apr 28, 2000TornadoSt Helens$35K

Source: NOAA Storm Events Database, county-based reports through Jan 6, 2022. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Columbia County

Check your address flood zone ›
1.9%of homes have federal flood insurance (467 policies)
21.8%of homes in mapped high-risk flood zones are insured
$20.9 millionpaid on 432 flood claims since 1978
2007costliest year, with $17.5 million paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Columbia County

$421,600median home value (Oregon $477,600, US $332,700)
1981median year homes were built (Oregon 1981, US 1980)
49%of homes built before 1980, before many modern wind, quake and flood building rules
13.8%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 22,167 housing units.

Compare in Oregon

All 36 ›
Largest countiesOverall riskTop hazard
Multnomah CountyHighEarthquake
Washington CountyHighEarthquake
Clackamas CountyHighEarthquake
Lane CountyHighInland flooding
Marion CountyHighEarthquake
Jackson CountyModerateInland flooding
Deschutes CountyModerateInland flooding
Linn CountyModerateEarthquake

Neighboring counties

CountyOverall riskDeclarations
Multnomah CountyHigh10
Washington CountyHigh15
Clark County, WAModerate15
Cowlitz County, WAModerate21
Clatsop CountyHigh16
Tillamook CountyModerate22
Wahkiakum County, WAVery Low30

Common questions about Columbia County

What is the biggest natural hazard in Columbia County?

Earthquake has the highest expected yearly losses in Columbia County, about $14.8 million a year in FEMA's estimate. Inland flooding is second at $14.1 million.

How many federal disasters has Columbia County had?

Columbia County has been included in 14 federal disaster or emergency declarations for natural events since 1964, including 13 major disasters. The most recent was Wildfires and Straight-Line Winds in September 2020.

Is Columbia County a high-risk place to live?

Its overall rating is Relatively Low, 21st highest of 36 in Oregon. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Columbia County?

Standard home insurance does not cover flooding. About 1 in 53 homes in Columbia County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Columbia County had?

NOAA records list 5 tornadoes in Columbia County since 1950. The strongest was an F1 tornado on August 16, 1978. The weather service has also logged 3 hail reports and 12 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.