Ohio landslide risk
Hamilton County has the highest landslide risk in Ohio, scoring 95.4 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Hamilton County | 95.4 | Relatively Moderate | 0 |
| 2 | Ross County | 93.4 | Relatively Moderate | 0 |
| 3 | Licking County | 91.5 | Relatively Moderate | 0 |
| 4 | Monroe County | 90.6 | Relatively Moderate | 0 |
| 5 | Belmont County | 89 | Relatively Moderate | 1 |
| 6 | Meigs County | 88.9 | Relatively Moderate | 0 |
| 7 | Washington County | 88.3 | Relatively Moderate | 0 |
| 8 | Coshocton County | 87.5 | Relatively Moderate | 0 |
| 9 | Gallia County | 87.5 | Relatively Moderate | 0 |
| 10 | Lawrence County | 87.4 | Relatively Moderate | 0 |
| 11 | Vinton County | 87.1 | Relatively Low | 0 |
| 12 | Fairfield County | 87 | Relatively Low | 0 |
| 13 | Guernsey County | 86.6 | Relatively Low | 1 |
| 14 | Hocking County | 86.5 | Relatively Low | 0 |
| 15 | Athens County | 86.2 | Relatively Low | 0 |
| 16 | Noble County | 86.1 | Relatively Low | 0 |
| 17 | Jackson County | 85.9 | Relatively Low | 0 |
| 18 | Brown County | 85.8 | Relatively Low | 0 |
| 19 | Scioto County | 85.8 | Relatively Low | 0 |
| 20 | Muskingum County | 84.7 | Relatively Low | 0 |
| 21 | Morgan County | 83.7 | Relatively Low | 0 |
| 22 | Tuscarawas County | 83.3 | Relatively Low | 0 |
| 23 | Harrison County | 83.2 | Relatively Low | 0 |
| 24 | Holmes County | 82.9 | Relatively Low | 0 |
| 25 | Clermont County | 82.8 | Relatively Low | 0 |
| 26 | Jefferson County | 82.2 | Relatively Low | 0 |
| 27 | Carroll County | 80.3 | Relatively Low | 0 |
| 28 | Perry County | 79.6 | Relatively Low | 0 |
| 29 | Pike County | 78.9 | Relatively Low | 0 |
| 30 | Highland County | 76.4 | Relatively Low | 0 |
| 31 | Butler County | 76.2 | Relatively Low | 0 |
| 32 | Columbiana County | 75.5 | Relatively Low | 0 |
| 33 | Warren County | 67.3 | Relatively Low | 0 |
| 34 | Montgomery County | 66.2 | Relatively Low | 0 |
| 35 | Logan County | 65.6 | Relatively Low | 0 |
| 36 | Knox County | 65 | Relatively Low | 0 |
| 37 | Franklin County | 64.2 | Relatively Low | 0 |
| 38 | Stark County | 59.9 | Very Low | 0 |
| 39 | Greene County | 58.4 | Very Low | 0 |
| 40 | Richland County | 56.7 | Very Low | 0 |
| 41 | Shelby County | 54.1 | Very Low | 0 |
| 42 | Preble County | 52.7 | Very Low | 0 |
| 43 | Summit County | 51.7 | Very Low | 0 |
| 44 | Adams County | 51 | Very Low | 0 |
| 45 | Champaign County | 51 | Very Low | 0 |
| 46 | Clinton County | 50.5 | Very Low | 0 |
| 47 | Clark County | 50.1 | Very Low | 0 |
| 48 | Ashland County | 50 | Very Low | 0 |
| 49 | Huron County | 49.5 | Very Low | 0 |
| 50 | Pickaway County | 48.6 | Very Low | 0 |
| 51 | Morrow County | 47.8 | Very Low | 0 |
| 52 | Delaware County | 47.2 | Very Low | 0 |
| 53 | Miami County | 42.6 | Very Low | 0 |
| 54 | Williams County | 41.7 | Very Low | 0 |
| 55 | Lorain County | 41.6 | Very Low | 0 |
| 56 | Defiance County | 40.9 | Very Low | 0 |
| 57 | Wayne County | 40.4 | Very Low | 0 |
| 58 | Erie County | 39.6 | Very Low | 0 |
| 59 | Wyandot County | 38.8 | Very Low | 0 |
| 60 | Seneca County | 37.8 | Very Low | 0 |
| 61 | Lucas County | 37.2 | Very Low | 0 |
| 62 | Paulding County | 35.6 | Very Low | 0 |
| 63 | Darke County | 35.5 | Very Low | 0 |
| 64 | Fayette County | 35.4 | Very Low | 0 |
| 65 | Cuyahoga County | 34.7 | Very Low | 0 |
| 66 | Geauga County | 34.5 | Very Low | 0 |
| 67 | Sandusky County | 32.8 | Very Low | 0 |
| 68 | Auglaize County | 31.6 | Very Low | 0 |
| 69 | Henry County | 31.4 | Very Low | 0 |
| 70 | Marion County | 31.2 | Very Low | 0 |
| 71 | Portage County | 30.8 | Very Low | 0 |
| 72 | Wood County | 30.2 | Very Low | 0 |
| 73 | Madison County | 30.1 | Very Low | 0 |
| 74 | Medina County | 30 | Very Low | 0 |
| 75 | Allen County | 29.6 | Very Low | 0 |
| 76 | Crawford County | 29.5 | Very Low | 0 |
| 77 | Mahoning County | 28 | Very Low | 0 |
| 78 | Putnam County | 27.5 | Very Low | 0 |
| 79 | Hardin County | 26.4 | Very Low | 0 |
| 80 | Fulton County | 25.7 | Very Low | 0 |
| 81 | Union County | 25.5 | Very Low | 0 |
| 82 | Trumbull County | 24.5 | Very Low | 0 |
| 83 | Hancock County | 24.4 | Very Low | 0 |
| 84 | Ashtabula County | 22 | Very Low | 0 |
| 85 | Ottawa County | 21.5 | Very Low | 0 |
| 86 | Mercer County | 20.9 | Very Low | 0 |
| 87 | Lake County | 19.8 | Very Low | 0 |
| 88 | Van Wert County | 15.4 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Landslide risk nationally:
Other hazard risks in Ohio:
Frequently asked questions
What is the highest landslide risk county in Ohio?
Hamilton County, OH has the highest landslide risk in Ohio, with a FEMA National Risk Index score of 95.4 out of 100 (rated "Relatively Moderate").
What causes landslide risk in Ohio?
Landslide risk covers expected losses from hillslope failures, rockfalls, and debris flows triggered by heavy rainfall, snowmelt, wildfire, or earthquakes. High scores concentrate in the Pacific Northwest, California coastal ranges, Appalachians, and Rocky Mountain foothills, where steep terrain combines with intense precipitation or seismic activity.