Landslide Risk in Maryland
All Maryland counties ranked by FEMA National Risk Index landslide score
Landslide risk — downhill movement of rock, soil, and debris on unstable slopes — is rated for 24 of 24 Maryland counties in FEMA's National Risk Index. Allegany County carries the state's highest landslide score at 93.2, with $66K in expected annual landslide losses.
No Maryland county reaches the High band for landslide, and expected annual losses from landslide total roughly $230K statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Landslide
| # | County | Landslide Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Allegany County | Medium | 0.90 / yr | $66K | |
| 2 | Prince George's County | Medium | 0.36 / yr | $59K | |
| 3 | Washington County | Low | 0.46 / yr | $15K | |
| 4 | Anne Arundel County | Low | 0.19 / yr | $23K | |
| 5 | Garrett County | Low | 0.87 / yr | $11K | |
| 6 | Montgomery County | Low | 0.45 / yr | $11K | |
| 7 | Baltimore County | Low | 0.39 / yr | $9K | |
| 8 | Calvert County | Low | 0.14 / yr | $9K | |
| 9 | Frederick County | Low | 0.61 / yr | $7K | |
| 10 | Charles County | Very Low | 0.17 / yr | $5K | |
| 11 | Carroll County | Very Low | 0.50 / yr | $4K | |
| 12 | Cecil County | Very Low | 0.15 / yr | $3K | |
| 13 | Howard County | Very Low | 0.24 / yr | $3K | |
| 14 | St. Mary's County | Very Low | 0.09 / yr | $2K | |
| 15 | Harford County | Very Low | 0.26 / yr | $2K | |
| 16 | Baltimore City | Very Low | 0.04 / yr | $371 | |
| 17 | Wicomico County | Very Low | 0.05 / yr | $194 | |
| 18 | Kent County | Very Low | 0.06 / yr | $131 | |
| 19 | Queen Anne's County | Very Low | 0.06 / yr | $127 | |
| 20 | Talbot County | Very Low | 0.04 / yr | $75 | |
| 21 | Caroline County | Very Low | 0.05 / yr | $60 | |
| 22 | Worcester County | Very Low | 0.06 / yr | $66 | |
| 23 | Dorchester County | Very Low | 0.07 / yr | $28 | |
| 24 | Somerset County | Very Low | 0.04 / yr | $7 |
24 Maryland counties with measurable landslide risk. See the national landslide ranking or all Maryland counties by overall risk.
Frequently Asked Questions
Which Maryland county has the highest landslide risk?
Allegany County has the highest FEMA landslide risk score in Maryland at 93.2 (Medium), with $66K in expected annual losses and about 0.90 events per year.
How many Maryland counties face significant landslide risk?
24 Maryland counties record measurable landslide risk in FEMA's National Risk Index; 0 of them are rated High or Very High.