Coastal Flood Risk in Texas
All Texas counties ranked by FEMA National Risk Index coastal flood score
Coastal Flood risk — seawater inundation from storm surge, high tides, and rising sea levels — is rated for 21 of 254 Texas counties in FEMA's National Risk Index. Galveston County carries the state's highest coastal flood score at 88.6, with $5M in expected annual coastal flood losses.
2 Texas counties are rated High or Very High for coastal flood, and expected annual losses from coastal flood total roughly $17M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Coastal Flood
| # | County | Coastal Flood Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Galveston County | High | 3.76 / yr | $5M | |
| 2 | Harris County | High | 3.76 / yr | $3M | |
| 3 | Orange County | Medium | 3.69 / yr | $2M | |
| 4 | Jefferson County | Medium | 3.85 / yr | $1M | |
| 5 | Brazoria County | Medium | 3.74 / yr | $2M | |
| 6 | Nueces County | Medium | 3.69 / yr | $1M | |
| 7 | Matagorda County | Medium | 3.69 / yr | $733K | |
| 8 | Aransas County | Medium | 3.69 / yr | $647K | |
| 9 | Cameron County | Medium | 3.65 / yr | $547K | |
| 10 | Chambers County | Low | 3.76 / yr | $533K | |
| 11 | Calhoun County | Low | 3.69 / yr | $197K | |
| 12 | San Patricio County | Low | 3.69 / yr | $139K | |
| 13 | Jackson County | Low | 3.69 / yr | $124K | |
| 14 | Refugio County | Very Low | 3.69 / yr | $20K | |
| 15 | Willacy County | Very Low | 3.18 / yr | $10K | |
| 16 | Newton County | Very Low | 0.01 / yr | $8K | |
| 17 | Kleberg County | Very Low | 3.20 / yr | $5K | |
| 18 | Hardin County | Very Low | 0.01 / yr | $7K | |
| 19 | Victoria County | Very Low | 3.69 / yr | $3K | |
| 20 | Liberty County | Very Low | 0.01 / yr | $323 | |
| 21 | Fort Bend County | Very Low | 0.01 / yr | $224 |
21 Texas counties with measurable coastal flood risk. See the national coastal flood ranking or all Texas counties by overall risk.
Frequently Asked Questions
Which Texas county has the highest coastal flood risk?
Galveston County has the highest FEMA coastal flood risk score in Texas at 88.6 (High), with $5M in expected annual losses and about 3.76 events per year.
How many Texas counties face significant coastal flood risk?
21 Texas counties record measurable coastal flood risk in FEMA's National Risk Index; 2 of them are rated High or Very High.