Teton County, Wyoming, Grand Teton National Park Area
The dominant drainage class is Well drained and the dominant hydrologic group is A (high infiltration, low 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 Teton County, Wyoming, Grand Teton National Park Area.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Taglake-Sebud association * | 41K | Well drained | A | Very limited | Very limited |
| Water | 34K | Not rated | Not rated | ||
| Rock outcrop-Teewinot-Moran association * | 27K | D | Not rated | Not rated | |
| Tineman gravelly loam | 26K | Well drained | B | Not limited | Very limited |
| Leighcan-Rock outcrop-Walcott association * | 20K | Well drained | A | Very limited | Very limited |
| Tineman-Bearmouth gravelly loams, 0 to 3 percent slopes | 19K | Well drained | B | Not limited | Very limited |
| Tetonville-Wilsonville fine sandy loams | 16K | Somewhat poorly drained | B | Very limited | Very limited |
| Cryaquolls-Cryofibrists complex * | 14K | Poorly drained | B/D | Very limited | Very limited |
| Rubble land-Midfork-Starman association * | 13K | A | Not rated | Not rated | |
| Rock outcrop * | 11K | D | Not rated | Not rated | |
| Starman-Owlcan association * | 11K | Well drained | D | Very limited | Very limited |
| Leighcan-Moran-Walcott association * | 10K | Well drained | A | Somewhat limited | Very limited |
| Rubble land-Walcott-Leighcan association * | 10K | Well drained | A | Not rated | Not rated |
| Taglake-Sebud association, steep * | 9K | Well drained | A | Very limited | Very limited |
| Rubble land * | 8K | A | Not rated | Not rated | |
| Uhl-Roxal association * | 8K | Well drained | B | Very limited | Very limited |
| Tetonville gravelly loam | 8K | Somewhat poorly drained | C | Very limited | Very limited |
| Tetonville-Riverwash complex | 7K | Somewhat poorly drained | Not rated | Not rated | |
| Greyback gravelly loam, 0 to 3 percent slopes | 7K | Somewhat excessively drained | B | Not limited | Very limited |
| Tineman-Bearmouth gravelly loams, 3 to 40 percent slopes * | 6K | Well drained | B | Not limited | Very limited |
What This Means
Building & Foundations
About 41% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 63% 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.