Landslide Risk in Pennsylvania
All Pennsylvania counties ranked by FEMA National Risk Index landslide score
Landslide risk — downhill movement of rock, soil, and debris on unstable slopes — is rated for 67 of 67 Pennsylvania counties in FEMA's National Risk Index. Indiana County carries the state's highest landslide score at 98.0, with $494K in expected annual landslide losses.
1 Pennsylvania county is rated High or Very High for landslide, and expected annual losses from landslide total roughly $2M 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 | Indiana County | High | 1.16 / yr | $494K | |
| 2 | Washington County | Medium | 2.09 / yr | $121K | |
| 3 | Bedford County | Medium | 1.68 / yr | $68K | |
| 4 | Berks County | Medium | 0.84 / yr | $67K | |
| 5 | Westmoreland County | Medium | 1.67 / yr | $72K | |
| 6 | Greene County | Medium | 1.41 / yr | $60K | |
| 7 | Schuylkill County | Medium | 1.00 / yr | $50K | |
| 8 | Huntingdon County | Medium | 1.46 / yr | $48K | |
| 9 | Centre County | Medium | 1.10 / yr | $41K | |
| 10 | Allegheny County | Low | 1.50 / yr | $42K | |
| 11 | Fayette County | Low | 1.34 / yr | $31K | |
| 12 | Blair County | Low | 0.64 / yr | $30K | |
| 13 | Armstrong County | Low | 1.25 / yr | $31K | |
| 14 | Dauphin County | Low | 0.59 / yr | $29K | |
| 15 | Perry County | Low | 0.93 / yr | $28K | |
| 16 | Butler County | Low | 1.01 / yr | $31K | |
| 17 | Fulton County | Low | 0.87 / yr | $26K | |
| 18 | Potter County | Low | 1.71 / yr | $20K | |
| 19 | Lycoming County | Low | 1.53 / yr | $24K | |
| 20 | Northumberland County | Low | 0.51 / yr | $21K | |
| 21 | Tioga County | Low | 1.37 / yr | $18K | |
| 22 | Beaver County | Low | 0.77 / yr | $21K | |
| 23 | Bradford County | Low | 1.33 / yr | $19K | |
| 24 | Somerset County | Low | 1.12 / yr | $17K | |
| 25 | Clearfield County | Low | 1.28 / yr | $16K | |
| 26 | Susquehanna County | Low | 1.15 / yr | $19K | |
| 27 | Cambria County | Low | 0.73 / yr | $15K | |
| 28 | Columbia County | Low | 0.55 / yr | $17K | |
| 29 | Clinton County | Low | 1.02 / yr | $13K | |
| 30 | Mifflin County | Low | 0.50 / yr | $10K | |
| 31 | Jefferson County | Low | 0.71 / yr | $11K | |
| 32 | Lehigh County | Low | 0.28 / yr | $13K | |
| 33 | Juniata County | Low | 0.56 / yr | $11K | |
| 34 | York County | Low | 0.98 / yr | $17K | |
| 35 | Chester County | Low | 0.66 / yr | $20K | |
| 36 | Snyder County | Low | 0.39 / yr | $10K | |
| 37 | McKean County | Low | 1.00 / yr | $10K | |
| 38 | Luzerne County | Low | 0.77 / yr | $10K | |
| 39 | Cameron County | Low | 0.59 / yr | $9K | |
| 40 | Northampton County | Low | 0.24 / yr | $11K | |
| 41 | Philadelphia County | Low | 0.06 / yr | $7K | |
| 42 | Franklin County | Low | 0.56 / yr | $10K | |
| 43 | Cumberland County | Low | 0.35 / yr | $10K | |
| 44 | Wayne County | Low | 0.79 / yr | $8K | |
| 45 | Lancaster County | Low | 0.55 / yr | $8K | |
| 46 | Lackawanna County | Low | 0.51 / yr | $7K | |
| 47 | Wyoming County | Low | 0.53 / yr | $7K | |
| 48 | Carbon County | Low | 0.30 / yr | $7K | |
| 49 | Monroe County | Low | 0.47 / yr | $7K | |
| 50 | Elk County | Low | 0.72 / yr | $7K | |
| 51 | Clarion County | Low | 0.63 / yr | $5K | |
| 52 | Warren County | Low | 0.92 / yr | $6K | |
| 53 | Montgomery County | Low | 0.26 / yr | $6K | |
| 54 | Venango County | Low | 0.45 / yr | $4K | |
| 55 | Pike County | Low | 0.56 / yr | $5K | |
| 56 | Union County | Low | 0.28 / yr | $3K | |
| 57 | Sullivan County | Low | 0.52 / yr | $3K | |
| 58 | Lawrence County | Low | 0.25 / yr | $3K | |
| 59 | Lebanon County | Low | 0.23 / yr | $4K | |
| 60 | Forest County | Very Low | 0.33 / yr | $2K | |
| 61 | Delaware County | Very Low | 0.16 / yr | $3K | |
| 62 | Montour County | Very Low | 0.11 / yr | $2K | |
| 63 | Bucks County | Very Low | 0.23 / yr | $3K | |
| 64 | Crawford County | Very Low | 0.31 / yr | $2K | |
| 65 | Erie County | Very Low | 0.26 / yr | $862 | |
| 66 | Mercer County | Very Low | 0.20 / yr | $737 | |
| 67 | Adams County | Very Low | 0.22 / yr | $643 |
67 Pennsylvania counties with measurable landslide risk. See the national landslide ranking or all Pennsylvania counties by overall risk.
Frequently Asked Questions
Which Pennsylvania county has the highest landslide risk?
Indiana County has the highest FEMA landslide risk score in Pennsylvania at 98.0 (High), with $494K in expected annual losses and about 1.16 events per year.
How many Pennsylvania counties face significant landslide risk?
67 Pennsylvania counties record measurable landslide risk in FEMA's National Risk Index; 1 of them are rated High or Very High.