District of Columbia inland flooding risk
District of Columbia has the highest inland flooding risk in District of Columbia, scoring 97.4 out of 100 — rated "Relatively High" by FEMA's National Risk Index. NOAA has recorded 115 inland flooding events across District of Columbia over the past decade.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | District of Columbia | 97.4 | Relatively High | 115 |
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.
Inland Flooding risk nationally:
Other hazard risks in District of Columbia:
Frequently asked questions
What is the highest inland flooding risk county in District of Columbia?
District of Columbia, DC has the highest inland flooding risk in District of Columbia, with a FEMA National Risk Index score of 97.4 out of 100 (rated "Relatively High").
What causes inland flooding risk in District of Columbia?
Inland flooding covers riverine and surface (pluvial) flooding — the most common and costly natural disaster type in the US. High scores appear across river floodplains in the Midwest, South, and Mid-Atlantic, where legacy development in flood-prone areas and aging stormwater infrastructure concentrate risk.