23 counties mapped. On average, 12% of Wyoming county soil area is high shrink-swell clay (USDA SSURGO).
Higher percentages mean more of a county's mapped soil is shrink-swell clay that expands and contracts with moisture. This is county-scale exposure, not a diagnosis of any single home — but it tells you whether soil movement belongs on your radar.
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Before you call a foundation company →| County | Tier | High-risk % | Moderate % |
|---|---|---|---|
| Crook | Severe | 45% | 23% |
| Weston | High | 26% | 28% |
| Sheridan | High | 26% | 46% |
| Campbell | High | 22% | 43% |
| Johnson | High | 20% | 36% |
| Natrona | High | 19% | 39% |
| Lincoln | High | 15% | 36% |
| Converse | Moderate | 15% | 42% |
| Big Horn | Moderate | 13% | 43% |
| Niobrara | Moderate | 12% | 26% |
| Park | Moderate | 11% | 39% |
| Hot Springs | Moderate | 10% | 16% |
| Sublette | Moderate | 10% | 42% |
| Carbon | Moderate | 7% | 22% |
| Fremont | Moderate | 6% | 44% |
| Uinta | Moderate | 6% | 30% |
| Albany | Moderate | 5% | 37% |
| Washakie | Low | 4% | 46% |
| Laramie | Low | 4% | 38% |
| Sweetwater | Low | 3% | 12% |
| Goshen | Low | 2% | 18% |
| Teton | Low | 1% | 9% |
| Platte | Low | 0% | 18% |
Risk metrics are computed from USDA SSURGO soil survey data (linear extensibility of soil components, area-weighted by county). Soil varies lot to lot — this is county-scale context, not a substitute for a site-specific geotechnical or structural assessment.