Washington County 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 Washington County Area, Utah.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Rock outcrop | 137K | D | Not rated | Not rated | |
| Rock land | 66K | Not rated | Not rated | ||
| Cave very gravelly sandy loam, low rainfall, 2 to 7 percent slopes | 64K | Well drained | D | Very limited | Very limited |
| Stony colluvial land | 53K | Not rated | Not rated | ||
| Badland, very steep | 46K | Not rated | Not rated | ||
| Badland | 44K | Not rated | Not rated | ||
| Quazo-Motoqua very gravelly sandy loams, 30 to 70 percent slopes | 40K | Well drained | D | Very limited | Very limited |
| Bond sandy loam, 1 to 10 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Welring-Tortugas very gravelly loams, 20 to 70 percent slopes | 31K | Well drained | D | Very limited | Very limited |
| Mathis-Rock outcrop complex, 20 to 50 percent slopes | 29K | Somewhat excessively drained | A | Very limited | Very limited |
| Rock land, stony | 29K | Not rated | Not rated | ||
| Dagflat-Motoqua complex, 30 to 70 percent slopes | 24K | Well drained | C | Very limited | Very limited |
| Magotsu-Pastura complex, 2 to 20 percent slopes | 23K | Well drained | D | Very limited | Very limited |
| Cave very gravelly sandy loam, 7 to 30 percent slopes | 22K | Well drained | D | Very limited | Very limited |
| Eroded land-Shalet complex | 20K | Not rated | Not rated | ||
| Pintura loamy fine sand, hummocky, 1 to 10 percent slopes | 20K | Somewhat excessively drained | A | Not limited | Very limited |
| Rough broken land | 19K | Not rated | Not rated | ||
| Eroded land-Shalet complex, warm | 14K | Not rated | Not rated | ||
| Naplene silt loam, 2 to 6 percent slopes | 12K | Well drained | C | Somewhat limited | Very limited |
| Winkel gravelly fine sandy loam, 1 to 8 percent slopes | 11K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 37% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 42% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.
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.