Oregon coastal flooding risk
Clatsop County has the highest coastal flooding risk in Oregon, scoring 96.4 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Clatsop County | 96.4 | Very High |
| 2 | Coos County | 87.4 | Relatively High |
| 3 | Lincoln County | 71.8 | Relatively Moderate |
| 4 | Tillamook County | 66.8 | Relatively Moderate |
| 5 | Douglas County | 62.8 | Relatively Moderate |
| 6 | Lane County | 55.2 | Relatively Low |
| 7 | Columbia County | 50.4 | Relatively Low |
| 8 | Curry County | 48.4 | Relatively Low |
| 9 | Multnomah County | 43.4 | Relatively Low |
| 10 | Clackamas County | 18.8 | Very Low |
| 11 | Benton County | 0 | No Rating |
| 12 | Polk County | 0 | No Rating |
| 13 | Washington County | 0 | No Rating |
| 14 | Yamhill County | 0 | No Rating |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Coastal Flooding risk nationally:
Other hazard risks in Oregon:
Frequently asked questions
What is the highest coastal flooding risk county in Oregon?
Clatsop County, OR has the highest coastal flooding risk in Oregon, with a FEMA National Risk Index score of 96.4 out of 100 (rated "Very High").
How many counties in Oregon are rated Very High for coastal flooding risk?
1 of 14 scored Oregon counties are rated "Very High" for coastal flooding risk by FEMA's National Risk Index.
What causes coastal flooding risk in Oregon?
Coastal flooding scores cover storm surge, wave action, and tidal flooding along the Gulf, Atlantic, and Pacific coasts, and Great Lakes shoreline. Inland flooding is scored separately. Counties with "Not Applicable" ratings have no significant coastal exposure. Coastal flood events are reported at zone level in NOAA Storm Events and are not included in county-level counts.