Wisconsin landslide risk
Vernon County has the highest landslide risk in Wisconsin, scoring 99 out of 100 — rated "Relatively High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Vernon County | 99 | Relatively High | 0 |
| 2 | Richland County | 96.2 | Relatively Moderate | 0 |
| 3 | Crawford County | 96.1 | Relatively Moderate | 0 |
| 4 | Grant County | 95.5 | Relatively Moderate | 0 |
| 5 | Monroe County | 93.4 | Relatively Moderate | 0 |
| 6 | La Crosse County | 92.7 | Relatively Moderate | 0 |
| 7 | Iowa County | 91.9 | Relatively Moderate | 1 |
| 8 | Buffalo County | 91.4 | Relatively Moderate | 0 |
| 9 | Trempealeau County | 90.4 | Relatively Moderate | 0 |
| 10 | Dane County | 89.4 | Relatively Moderate | 0 |
| 11 | Sauk County | 87.8 | Relatively Moderate | 0 |
| 12 | Jackson County | 85.6 | Relatively Low | 0 |
| 13 | Green County | 84.4 | Relatively Low | 0 |
| 14 | Dunn County | 84.1 | Relatively Low | 0 |
| 15 | Pierce County | 81.4 | Relatively Low | 0 |
| 16 | Juneau County | 80.7 | Relatively Low | 0 |
| 17 | Lafayette County | 79.7 | Relatively Low | 0 |
| 18 | Eau Claire County | 76.5 | Relatively Low | 0 |
| 19 | Pepin County | 73.9 | Relatively Low | 0 |
| 20 | Columbia County | 72.9 | Relatively Low | 0 |
| 21 | St. Croix County | 68.6 | Relatively Low | 0 |
| 22 | Chippewa County | 66.9 | Relatively Low | 0 |
| 23 | Walworth County | 65.2 | Relatively Low | 0 |
| 24 | Dodge County | 63.3 | Relatively Low | 0 |
| 25 | Oconto County | 63.3 | Relatively Low | 0 |
| 26 | Waukesha County | 62.5 | Relatively Low | 0 |
| 27 | Waupaca County | 61.9 | Very Low | 0 |
| 28 | Washington County | 61.2 | Very Low | 0 |
| 29 | Shawano County | 60.5 | Very Low | 0 |
| 30 | Rock County | 60.1 | Very Low | 0 |
| 31 | Marathon County | 59.5 | Very Low | 0 |
| 32 | Jefferson County | 58.1 | Very Low | 0 |
| 33 | Brown County | 57.8 | Very Low | 0 |
| 34 | Fond du Lac County | 55.3 | Very Low | 0 |
| 35 | Waushara County | 52.8 | Very Low | 0 |
| 36 | Adams County | 50.4 | Very Low | 0 |
| 37 | Portage County | 49.7 | Very Low | 0 |
| 38 | Green Lake County | 47 | Very Low | 0 |
| 39 | Marquette County | 46.2 | Very Low | 0 |
| 40 | Sheboygan County | 46.1 | Very Low | 0 |
| 41 | Clark County | 45.5 | Very Low | 0 |
| 42 | Manitowoc County | 44.1 | Very Low | 0 |
| 43 | Door County | 39.6 | Very Low | 0 |
| 44 | Outagamie County | 36.5 | Very Low | 0 |
| 45 | Racine County | 34.3 | Very Low | 0 |
| 46 | Milwaukee County | 31 | Very Low | 0 |
| 47 | Wood County | 28.3 | Very Low | 0 |
| 48 | Kewaunee County | 28 | Very Low | 0 |
| 49 | Kenosha County | 26.7 | Very Low | 0 |
| 50 | Bayfield County | 26.2 | Very Low | 0 |
| 51 | Calumet County | 24.5 | Very Low | 0 |
| 52 | Vilas County | 22.3 | Very Low | 0 |
| 53 | Winnebago County | 21.3 | Very Low | 0 |
| 54 | Oneida County | 19.7 | Very Low | 0 |
| 55 | Polk County | 19.2 | Very Low | 0 |
| 56 | Marinette County | 18.2 | Very Low | 0 |
| 57 | Washburn County | 17.9 | Very Low | 0 |
| 58 | Sawyer County | 17.5 | Very Low | 0 |
| 59 | Barron County | 17.1 | Very Low | 0 |
| 60 | Douglas County | 16.2 | Very Low | 0 |
| 61 | Burnett County | 16.1 | Very Low | 0 |
| 62 | Ozaukee County | 15.4 | Very Low | 0 |
| 63 | Forest County | 13.9 | Very Low | 0 |
| 64 | Iron County | 11.4 | Very Low | 0 |
| 65 | Langlade County | 11.1 | Very Low | 0 |
| 66 | Lincoln County | 10.7 | Very Low | 0 |
| 67 | Ashland County | 10.5 | Very Low | 0 |
| 68 | Price County | 9.8 | Very Low | 0 |
| 69 | Florence County | 9.3 | Very Low | 0 |
| 70 | Rusk County | 9.1 | Very Low | 0 |
| 71 | Taylor County | 8.2 | Very Low | 0 |
| 72 | Menominee County | 4.8 | 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 Wisconsin:
Frequently asked questions
What is the highest landslide risk county in Wisconsin?
Vernon County, WI has the highest landslide risk in Wisconsin, with a FEMA National Risk Index score of 99 out of 100 (rated "Relatively High").
What causes landslide risk in Wisconsin?
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.