Mineral County Area, Nevada
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 Mineral County Area, Nevada.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Pintwater-Blacktop-Rock outcrop association | 105K | Well drained | D | Very limited | Very limited |
| Downeyville-Blacktop-Rock outcrop association | 83K | Well drained | D | Very limited | Very limited |
| Brawley-Pizona association | 62K | Well drained | D | Very limited | Very limited |
| Nupart-Lazan-Rock outcrop association | 60K | Somewhat excessively drained | D | Very limited | Very limited |
| Oricto-Gynelle-Izo association | 58K | Well drained | B | Not limited | Very limited |
| Gynelle-Izo association | 44K | Somewhat excessively drained | A | Very limited | Very limited |
| Garhill-Blacktop association | 41K | Well drained | D | Very limited | Very limited |
| Duco-Nosrac association, 25 to 65 percent slopes | 36K | Well drained | D | Very limited | Very limited |
| Hawsley loamy sand, 2 to 8 percent slopes | 34K | Somewhat excessively drained | A | Not limited | Very limited |
| Theon-Singatse-Rock outcrop association | 33K | Well drained | D | Very limited | Very limited |
| Stewval, very steep-Stewval-Gabbvally association | 32K | Well drained | D | Very limited | Very limited |
| Borealis-Itca association | 31K | Well drained | D | Very limited | Very limited |
| Stewval-Gabbvally association | 30K | Well drained | D | Very limited | Very limited |
| Stewval very gravelly sandy loam, 8 to 50 percent slopes | 29K | Well drained | D | Very limited | Very limited |
| Candelaria-Wardenot-Izo association | 28K | Well drained | B | Not limited | Very limited |
| Hough-Hawsley association | 27K | Well drained | B | Not limited | Very limited |
| Downeyville, moist-Downeyville-Gabbvally association | 25K | Well drained | D | Very limited | Very limited |
| Water | 25K | D | Not rated | Not rated | |
| Blacktop-Rock outcrop association | 24K | Somewhat excessively drained | D | Very limited | Very limited |
| Jetcop-Gabbvally association | 23K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 79% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 96% 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.