Wind River Basin Area, Wyoming, Parts of Fremont and Hot Springs Counties
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high 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 Wind River Basin Area, Wyoming, Parts of Fremont and Hot Springs Counties.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Lakehelen-Hazton complex, 6 to 60 percent slopes | 72K | Well drained | B | Very limited | Very limited |
| Oceanet-Persayo-Rock outcrop complex, 6 to 45 percent slopes | 70K | Well drained | D | Very limited | Very limited |
| Thermopolis-Sinkson association, 3 to 30 percent slopes | 55K | Well drained | D | Very limited | Very limited |
| Blackhall-Rock outcrop complex, 5 to 45 percent slopes | 51K | Well drained | D | Very limited | Very limited |
| Apron-Wallson-Worland association, 1 to 15 percent slopes | 51K | Well drained | A | Not limited | Not limited |
| Worland-Oceanet-Persayo complex, 1 to 15 percent slopes | 51K | Well drained | B | Somewhat limited | Very limited |
| Griffy-Saddle-Wallson complex, 1 to 8 percent slopes | 51K | Well drained | B | Not limited | Not limited |
| Irigul-Caseypeak-Rock outcrop complex, 10 to 70 percent slopes | 45K | Well drained | D | Very limited | Very limited |
| Nathale-Pishkun-Rock outcrop complex, 5 to 60 percent slopes | 42K | Well drained | D | Very limited | Very limited |
| Clifsand-Persayo complex, 2 to 60 percent slopes | 41K | Well drained | B | Very limited | Very limited |
| Saddle-Griffy sandy loams, 3 to 15 percent slopes | 40K | Well drained | C | Somewhat limited | Very limited |
| Alpine Ridges, Rubble land-Tundra Complex, 0 to 70 percent slopes | 37K | A | Not rated | Not rated | |
| Sinkson-Thermopolis loams, 3 to 30 percent slopes | 36K | Well drained | C | Somewhat limited | Very limited |
| Brownsto very bouldery-Brownsto-Anamac complex, 1 to 50 percent slopes | 35K | Well drained | B | Very limited | Very limited |
| Cragosen-Carmody-Blazon complex, 6 to 40 percent slopes | 35K | Well drained | D | Very limited | Very limited |
| Nielsen-Snowdon complex, 2 to 60 percent slopes | 35K | Well drained | D | Very limited | Very limited |
| Rock outcrop-Blazon complex, 6 to 40 percent slopes | 34K | Well drained | D | Not rated | Not rated |
| Teewinot-Rock outcrop-Rubble land complex, 4 to 60 percent slopes | 34K | D | Not rated | Not rated | |
| Dahlquist-Rock River complex, 1 to 12 percent slopes | 32K | Well drained | B | Somewhat limited | Somewhat limited |
| Rockinchair-Sinkson loams, 1 to 15 percent slopes | 30K | Well drained | B | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 54% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.
Septic Systems
About 72% 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.