Moffat County Area, Colorado
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 Moffat County Area, Colorado.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Torriorthents-Rock outcrop, sandstone complex, 25 to 75 percent slopes | 118K | Well drained | A | Very limited | Very limited |
| Torriorthents-Rock outcrop, shale complex, 30 to 75 percent slopes | 103K | Well drained | D | Very limited | Very limited |
| Rock River sandy loam, 3 to 12 percent slopes | 97K | Well drained | B | Not limited | Somewhat limited |
| Grieves-Crestman complex, 10 to 40 percent slopes | 96K | Somewhat excessively drained | A | Very limited | Very limited |
| Rock outcrop-Torriorthents complex, 50 to 75 percent slopes | 70K | D | Very limited | Very limited | |
| Torriorthents-Torripsamments complex, 12 to 40 percent slopes | 63K | Well drained | D | Very limited | Very limited |
| Forelle loam, 3 to 12 percent slopes | 61K | Well drained | B | Not limited | Somewhat limited |
| Ustorthents, frigid-Borolls complex, 25 to 75 percent slopes | 56K | Well drained | D | Very limited | Very limited |
| Rentsac-Moyerson complex, 25 to 65 percent slopes | 54K | Somewhat excessively drained | D | Very limited | Very limited |
| Maysprings coarse sandy loam, 3 to 12 percent slopes | 51K | Well drained | B | Not limited | Not limited |
| Torriorthents, 12 to 25 percent slopes | 49K | Well drained | D | Very limited | Very limited |
| Maysprings-Gretdivid complex, 10 to 20 percent slopes | 47K | Well drained | B | Very limited | Very limited |
| Berlake-Taffom-Gretdivid complex, 10 to 20 percent slopes | 43K | Well drained | B | Very limited | Very limited |
| Styers-Pinelli-Taffom complex, 10 to 25 percent slopes | 39K | Well drained | D | Very limited | Very limited |
| Coyet-Crestman, moist complex, 20 to 50 percent slopes | 39K | Excessively drained | A | Very limited | Very limited |
| Crago-Pensore-Grapit association, 6 to 75 percent slopes | 35K | Well drained | B | Very limited | Very limited |
| Rock outcrop-Earsman complex, 10 to 45 percent slopes | 34K | D | Very limited | Very limited | |
| Ryan Park loamy sand, 3 to 15 percent slopes | 34K | Somewhat excessively drained | A | Somewhat limited | Somewhat limited |
| Ironsprings-Maysprings-Gretdivid complex, 10 to 20 percent slopes | 33K | Somewhat excessively drained | B | Very limited | Very limited |
| Pinelli loam, 3 to 12 percent slopes | 32K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 76% 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.