Clackamas County, Oregon: hazard risk
FEMA rates Clackamas County's overall risk Relatively High (score 94.9 of 100, higher than 94% of rated U.S. counties); 8 of its 16 hazards are rated Relatively High or Very High, led by earthquake, cold wave, riverine flooding. Its storm record holds 875 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Earthquake | Relatively High | 98.6 | $109M |
| Cold Wave | Relatively High | 95.2 | $15M |
| Riverine Flooding | Relatively High | 93.7 | $77M |
| Strong Wind | Relatively High | 93.4 | $3.3M |
| Ice Storm | Relatively High | 90.9 | $1.3M |
| Avalanche | Relatively High | 86.5 | $1.5M |
| Winter Weather | Relatively High | 85.4 | $368K |
| Lightning | Relatively High | 83.2 | $1.1M |
| Landslide | Relatively Moderate | 95.8 | $210K |
| Volcanic Activity | Relatively Moderate | 95.8 | $495K |
| Heat Wave | Relatively Moderate | 95.5 | $8.5M |
| Wildfire | Relatively Low | 86.8 | $1.1M |
| Tornado | Relatively Low | 38.1 | $1.0M |
| Hail | Very Low | 31.6 | $165K |
| Coastal Flooding | Very Low | 18.8 | $200 |
| Drought | Very Low | 14.1 | $378 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Winter storms | 470 | 21 | $100M | 4th of 36 | 902nd of 3,077 |
| High wind and dust storms | 138 | 10 | $3.6B | 17th of 36 | 808th of 3,080 |
| Floods | 61 | 6 | $49M | 14th of 36 | 2234th of 3,080 |
| Heat | 51 | 175 | $109K | 5th of 36 | 1064th of 3,076 |
| Wildfires | 44 | 5 | $504K | 18th of 36 | 257th of 2,972 |
| Landslides and avalanches | 26 | 0 | $1.1M | 10th of 36 | 111th of 2,278 |
| Heavy rain | 21 | 1 | $122K | 12th of 36 | 895th of 3,080 |
| Extreme cold | 16 | 6 | – | 19th of 36 | 2138th of 3,076 |
| Hail | 15 | 1 | $64K | 13th of 36 | 2849th of 3,080 |
| Severe thunderstorm wind | 14 | 2 | $21K | 14th of 36 | 2921st of 3,080 |
| Lightning | 8 | 0 | $137K | 5th of 36 | 1355th of 3,080 |
| Tornadoes | 8 | 0 | $371K | 9th of 36 | 2698th of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Clackamas County record: every hazard by year and month, the deadliest events and FEMA's declarations.