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

#CountyLandslide ScoreRatingAnn. Freq.Ann. Loss
1 Worcester County
93.4
Medium 1.61 / yr $109K
2 Berkshire County
82.5
Low 1.25 / yr $22K
3 Franklin County
81.9
Low 1.22 / yr $22K
4 Norfolk County
72.1
Low 0.23 / yr $9K
5 Hampshire County
70.8
Low 0.60 / yr $8K
6 Hampden County
67.7
Low 0.67 / yr $4K
7 Barnstable County
66.6
Low 0.08 / yr $5K
8 Essex County
62.6
Low 0.25 / yr $3K
9 Plymouth County
61.6
Very Low 0.19 / yr $4K
10 Middlesex County
54.6
Very Low 0.55 / yr $2K
11 Bristol County
46.4
Very Low 0.13 / yr $1K
12 Suffolk County
36.2
Very Low 0.02 / yr $406
13 Dukes County
13.3
Very Low 0.02 / yr $54
14 Nantucket County
2.3
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.

Other Hazards in Massachusetts