Columbia County, Oregon
Natural disaster risk, federal disaster history and flood insurance facts.
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
- Ask whether an older house is bolted to its foundation.
- Consider separate earthquake insurance where risk is high.
- 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.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Earthquake | 94.5 | $15M | ||
| Inland flooding | 68.2 | $14M | ||
| Heat wave | 90.5 | $4M | ||
| Cold wave | 30.8 | $507K | ||
| Strong wind | 23.7 | $255K | ||
| Coastal flooding | 50.4 | $159K | ||
| Tornado | 13.3 | $130K | ||
| Landslide | 89.4 | $62K | ||
| Ice storm | 38.8 | $58K | ||
| Winter weather | 27.1 | $30K | ||
| Wildfire | 30.5 | $17K | ||
| Lightning | 4.0 | $16K | ||
| Hail | 4.8 | $13K | ||
| Volcanic activity | 81.8 | $1K | ||
| Avalanche | 4.7 | $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
Most recent
Show all 14
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.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Aug 16, 1978 | F1 | – | 0 / 0 |
| Nov 10, 2020 | EF0 | St Helens | 0 / 0 |
| Apr 28, 2000 | F0 | St Helens | 1 / 0 |
| Nov 10, 1965 | F0 | – | 0 / 0 |
| Jun 6, 2004 | F0 | Rainier | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Dec 3, 2007 | Flood | Vernonia | $36M |
| Dec 9, 2015 | Flood | Vernonia | $2M |
| Dec 8, 2015 | Flood | Vernonia | $824K |
| Dec 7, 2015 | Flood | Vernonia | $124K |
| Nov 10, 2020 | Tornado | St Helens | $40K |
| Apr 28, 2000 | Tornado | St 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 ›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
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 counties | Overall risk | Top hazard |
|---|---|---|
| Multnomah County | Earthquake | |
| Washington County | Earthquake | |
| Clackamas County | Earthquake | |
| Lane County | Inland flooding | |
| Marion County | Earthquake | |
| Jackson County | Inland flooding | |
| Deschutes County | Inland flooding | |
| Linn County | Earthquake |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Multnomah County | 10 | |
| Washington County | 15 | |
| Clark County, WA | 15 | |
| Cowlitz County, WA | 21 | |
| Clatsop County | 16 | |
| Tillamook County | 22 | |
| Wahkiakum County, WA | 30 |
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.