Fremont County, Wyoming, Lander Area
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Fremont County, Wyoming, Lander Area.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Farlow-Duncom association | 53K | Well drained | B | Very limited | Very limited |
| Patent-Forelle association | 45K | Well drained | C | Very limited | Very limited |
| Sinkson-Thermopolis association | 23K | Well drained | B | Very limited | Very limited |
| Thermopolis-Sinkson association | 17K | Well drained | D | Very limited | Very limited |
| Crownest-Cotha association | 16K | Well drained | D | Very limited | Very limited |
| Blackhall-Carmody association | 14K | Well drained | Very limited | Very limited | |
| Duncom-Farlow-Rock outcrop association | 14K | Well drained | D | Very limited | Very limited |
| Handran-Midelight association | 12K | Well drained | B | Somewhat limited | Very limited |
| Cotha-Blazon-Rock outcrop association | 12K | Well drained | D | Very limited | Very limited |
| Diamondville-Forelle association | 11K | Well drained | C | Somewhat limited | Very limited |
| Sapphire-Duncom association | 11K | Well drained | C | Very limited | Very limited |
| Blazon-Rock outcrop association | 10K | Well drained | D | Very limited | Very limited |
| Diamondville-Highpoint association | 8K | Well drained | C | Somewhat limited | Very limited |
| Irigul-Rock outcrop complex, 6 to 30 percent slopes | 6K | Well drained | D | Very limited | Very limited |
| Leavitt loam | 5K | Well drained | C | Not limited | Somewhat limited |
| Lupinto clay loam, 0 to 6 percent slopes | 5K | Well drained | C | Not limited | Somewhat limited |
| Leavitt-Rock outcrop association | 5K | Well drained | C | Somewhat limited | Somewhat limited |
| Ustic Torrifluvents-Aeric Fluvaquents complex | 4K | Somewhat poorly drained | Very limited | Very limited | |
| Blazon-Patent association | 4K | Well drained | D | Very limited | Very limited |
| Rock outcrop-Highpoint association | 4K | D | Not rated | Not rated |
What This Means
Building & Foundations
About 81% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 93% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.