Clackamas County, OR
FEMA National Risk Index scores, disaster declarations & hazard data
Clackamas County has experienced 23 federally declared disasters since 1965, most recently Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides in 2026. Its overall natural hazard risk is rated Relatively High — higher risk than most US counties.
Clackamas County's highest-rated hazards are earthquake, landslide, and volcanic activity, with its top risk rated "Relatively High" by FEMA's National Risk Index. Community vulnerability is relatively low (30th percentile nationally), indicating stronger recovery capacity than most US counties.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Clackamas County has been designated in 23 declarations since 1965, covering 6 disaster types including severe storm (8), fire (7), flood (4).
| Year | Type | Event name |
|---|---|---|
| 2026 | Severe Storm | Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides |
| 2024 | Severe Storm | Severe Winter Storms, Straight-Line Winds, Landslides, And Mudslides |
| 2022 | Fire | Milo Mciver Fire |
| 2021 | Severe Storm | Severe Winter Storm |
| 2020 | Fire | Wildfires And Straight-Line Winds |
| 2020 | Fire | Wildfires |
| 2020 | Fire | Riverside Fire |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2020 | Fire | Clakamas County Fire Complex |
Showing the 10 most recent of 23 total declarations since 1965.
Source: FEMA OpenFEMA Disaster Declarations Summaries. A single disaster can produce more than one record per county. Data current through September 2026.
Risk by hazard type
| Hazard | Risk rating | Risk score | Recorded events | Deaths | Prop. damage |
|---|---|---|---|---|---|
| Wildfire | Relatively Low | 86.8 | 0 | 0 | — |
| Inland Flooding | Relatively High | 93.7 | 6 | 0 | — |
| Coastal Flooding | Very Low | 18.8 | 0 | 0 | — |
| Earthquake | Relatively High | 98.6 | — | — | — |
| Heat Wave | Relatively Moderate | 95.5 | 0 | 0 | — |
| Tornado | Relatively Low | 38.1 | 2 | 0 | $50K |
| Hurricane | Not Applicable | — | 0 | 0 | — |
| Hail | Very Low | 31.6 | 4 | 1 | $50K |
| Strong Wind | Relatively High | 93.4 | 0 | 0 | — |
| Winter Weather | Relatively High | 85.4 | 0 | 0 | — |
| Ice Storm | Relatively High | 90.9 | — | — | — |
| Cold Wave | Relatively High | 95.2 | — | — | — |
| Lightning | Relatively High | 83.2 | 1 | 0 | $1K |
| Drought | Very Low | 14.1 | 0 | 0 | — |
| Landslide | Relatively Moderate | 95.8 | 3 | 0 | $50K |
| Avalanche | Relatively High | 86.5 | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic Activity | Relatively Moderate | 95.8 | — | — | — |
Scores are 0–100 percentiles relative to all US counties — higher means more exposed, not that a disaster is likely this year. Event counts: NOAA Storm Events 2016–2026; earthquake counts from USGS ComCat (M3.0+, 1996–2026). See the methodology page for details.
Community vulnerability
Clackamas County ranks in the 30th percentile (Low) for community vulnerability — a measure of how hard disaster impacts tend to hit residents. Higher vulnerability means more displacement, worse health outcomes, and slower recovery after a disaster.
| SVI theme | Percentile | Vulnerability level |
|---|---|---|
| Overall | 30th | Low |
| Socioeconomic status | 24th | Very low |
| Household characteristics | 32nd | Low |
| Racial & ethnic minority status | 54th | Moderate |
| Housing type & transportation | 43rd | Low |
Source: CDC/ATSDR Social Vulnerability Index 2022. Percentiles compare counties nationally — higher means more vulnerable relative to other counties. See CDC SVI for full methodology.
Future risk outlook
| Wildfire metric | National percentile | Level |
|---|---|---|
| Burn probability | 79th | Relatively High |
| Risk to homes | 80th | Very High |
| Buildings in direct exposure zone | 41.6% | — |
Wildfire: USDA Forest Service Wildfire Risk to Communities (RDS-2020-0016-2) — modeled values, not annual forecasts. See wildfirerisk.org. Inland flood and heat projections pending data availability; coastal sea-level projections are available for select coastal counties below — see the data page.
Nearby counties
Frequently asked questions
What natural hazards pose the greatest risk in Clackamas County?
According to the FEMA National Risk Index, the highest-risk hazards in Clackamas County, Oregon are earthquake, landslide, and volcanic activity. The county's overall natural hazard risk is rated Relatively High — higher risk than most US counties.
Has Clackamas County received federal disaster declarations?
Yes. Clackamas County has received 23 federal disaster declarations since 1965, including declarations in 2026. The most common disaster type on record is severe storm (8 declarations).
Has Clackamas County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Clackamas County include Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (2026), Severe Winter Storms, Straight-Line Winds, Landslides, And Mudslides (2024). See the declarations table above for the full history since 1965.
How does Clackamas County's natural hazard risk compare to nearby counties?
Among neighboring counties, Multnomah County, OR has the highest overall natural hazard risk (Relatively High) and Hood River County, OR has the lowest (Very Low). Clackamas County is rated Relatively High overall.
How is Clackamas County's composite disaster risk index calculated?
Clackamas County's composite disaster risk index — officially FEMA's National Risk Index (NRI) — scores every US county on a 0–100 percentile scale across 18 natural hazard types, factoring in expected annual loss, social vulnerability, and community resilience. Clackamas County's composite score of 95 means its overall natural hazard risk is higher than 95% of US counties.