Fairfield-Nephi Area, Utah
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 Fairfield-Nephi Area, Utah.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Lodar-Rock outcrop complex, 30 to 70 percent slopes | 54K | Somewhat excessively drained | D | Very limited | Very limited |
| Goldrun loamy fine sand, hummocky, 0 to 10 percent slopes | 45K | Somewhat excessively drained | A | Not limited | Very limited |
| Donnardo stony loam, 2 to 8 percent slopes | 37K | Well drained | B | Somewhat limited | Somewhat limited |
| Jericho gravelly fine sandy loam, 4 to 15 percent slopes | 35K | Well drained | D | Very limited | Very limited |
| Linoyer very fine sandy loam, 2 to 5 percent slopes | 35K | Well drained | B | Not limited | Not limited |
| Lundy-Rock outcrop complex, 30 to 70 percent slopes | 34K | Somewhat excessively drained | D | Very limited | Very limited |
| Borvant cobbly loam, 8 to 25 percent slopes | 34K | Well drained | D | Very limited | Very limited |
| Borvant cobbly loam, 2 to 8 percent slopes | 32K | Somewhat excessively drained | D | Very limited | Very limited |
| Pachic Cryoborolls, north slopes | 32K | Not rated | Not rated | ||
| Xeric Torriorthents-Rock outcrop complex, steep | 29K | Not rated | Not rated | ||
| Amtoft, moist-Rock outcrop complex, 30 to 70 percent slopes | 28K | Somewhat excessively drained | D | Very limited | Very limited |
| Hiko Peak stony sandy loam, 4 to 8 percent slopes | 27K | Well drained | B | Not limited | Somewhat limited |
| Spager gravelly loam, 4 to 15 percent slopes | 27K | Somewhat excessively drained | D | Very limited | Very limited |
| Amtoft-Rock outcrop complex, 30 to 70 percent slopes | 26K | Somewhat excessively drained | D | Very limited | Very limited |
| Sumine-Reywat-Rock outcrop complex, 10 to 30 percent slopes | 25K | Well drained | D | Very limited | Very limited |
| Shabliss very fine sandy loam, 2 to 5 percent slopes | 24K | Well drained | D | Very limited | Very limited |
| Medburn fine sandy loam, 2 to 4 percent slopes | 22K | Well drained | A | Not limited | Not limited |
| Bezzant gravelly loam, 30 to 60 percent slopes | 20K | Well drained | C | Very limited | Very limited |
| Genola silt loam, 1 to 2 percent slopes | 20K | Well drained | C | Not limited | Somewhat limited |
| Agassiz-Rock outcrop complex, 30 to 70 percent slopes | 20K | D | Not rated | Not rated |
What This Means
Building & Foundations
About 55% 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 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.