Landslide Risk in Massachusetts
All Massachusetts counties ranked by FEMA National Risk Index landslide score
Landslide risk — downhill movement of rock, soil, and debris on unstable slopes — is rated for 14 of 14 Massachusetts counties in FEMA's National Risk Index. Worcester County carries the state's highest landslide score at 93.4, with $109K in expected annual landslide losses.
No Massachusetts county reaches the High band for landslide, and expected annual losses from landslide total roughly $191K 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 | Worcester County | Medium | 1.61 / yr | $109K | |
| 2 | Berkshire County | Low | 1.25 / yr | $22K | |
| 3 | Franklin County | Low | 1.22 / yr | $22K | |
| 4 | Norfolk County | Low | 0.23 / yr | $9K | |
| 5 | Hampshire County | Low | 0.60 / yr | $8K | |
| 6 | Hampden County | Low | 0.67 / yr | $4K | |
| 7 | Barnstable County | Low | 0.08 / yr | $5K | |
| 8 | Essex County | Low | 0.25 / yr | $3K | |
| 9 | Plymouth County | Very Low | 0.19 / yr | $4K | |
| 10 | Middlesex County | Very Low | 0.55 / yr | $2K | |
| 11 | Bristol County | Very Low | 0.13 / yr | $1K | |
| 12 | Suffolk County | Very Low | 0.02 / yr | $406 | |
| 13 | Dukes County | Very Low | 0.02 / yr | $54 | |
| 14 | Nantucket County | Very Low | 0.01 / yr | $4 |
14 Massachusetts counties with measurable landslide risk. See the national landslide ranking or all Massachusetts counties by overall risk.
Frequently Asked Questions
Which Massachusetts county has the highest landslide risk?
Worcester County has the highest FEMA landslide risk score in Massachusetts at 93.4 (Medium), with $109K in expected annual losses and about 1.61 events per year.
How many Massachusetts counties face significant landslide risk?
14 Massachusetts counties record measurable landslide risk in FEMA's National Risk Index; 0 of them are rated High or Very High.