District of Columbia coastal flooding risk
District of Columbia has the highest coastal flooding risk in District of Columbia, scoring 74 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | District of Columbia | 74 | Relatively Moderate |
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 District of Columbia:
Frequently asked questions
What is the highest coastal flooding risk county in District of Columbia?
District of Columbia, DC has the highest coastal flooding risk in District of Columbia, with a FEMA National Risk Index score of 74 out of 100 (rated "Relatively Moderate").
What causes coastal flooding risk in District of Columbia?
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.