Big Horn County Area, Wyoming
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 Big Horn County Area, Wyoming.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| WY603-CL5-20 | 97K | Well drained | D | Very limited | Very limited |
| WY603-CL5-4 | 77K | Well drained | C | Not limited | Somewhat limited |
| WY603-CL5-2 | 77K | Well drained | D | Very limited | Very limited |
| WY603-CL5-1 | 73K | Well drained | C | Somewhat limited | Very limited |
| WY603-CL5-3 | 58K | Well drained | D | Very limited | Very limited |
| WY603-CL5-22 | 54K | Well drained | C | Somewhat limited | Somewhat limited |
| Badland | 53K | Not rated | Not rated | ||
| WY603-CL5-27 | 39K | Well drained | D | Very limited | Very limited |
| WY603-CL5-21 | 39K | Well drained | C | Somewhat limited | Very limited |
| Sayles-Persayo-Youngston complex, 0 to 45 percent slopes -- Draft | 39K | Well drained | C | Very limited | Very limited |
| Chipeta-Persayo-Rock outcrop complex, 6 to 45 percent slopes -- Draft | 33K | Well drained | D | Very limited | Very limited |
| Mudray-like very channery-Larim-like complex, 6 to 60 percent slopes -- Draft | 32K | Well drained | D | Very limited | Very limited |
| Bributte-Persayo-Pavillion complex, 3 to 60 percent slopes -- Draft | 32K | Well drained | D | Very limited | Very limited |
| Taluce-Travessilla complex, 10 to 60 percent slopes | 30K | Well drained | D | Very limited | Very limited |
| WY603-CL5-5 | 29K | Well drained | C | Somewhat limited | Very limited |
| Greybull-Persayo complex, 0 to 30 percent slopes -- Draft | 29K | Well drained | C | Very limited | Very limited |
| WY603-CL5-26 | 27K | Well drained | C | Somewhat limited | Very limited |
| WY603-CL5-7 | 26K | Well drained | C | Somewhat limited | Very limited |
| Preatorson-Worland-Willwood extremely gravelly complex, 3 to 60 percent slopes -- Draft | 23K | Well drained | B | Very limited | Very limited |
| Chipeta-like-Persayo-like-Rock outcrop complex, 2 to 20 percent slopes | 21K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 57% 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 79% 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.