Coleville-Bridgeport Area, Parts of Alpine and Mono Counties, California
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 Coleville-Bridgeport Area, Parts of Alpine and Mono Counties, California.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Bodiehill-Adamatt-Domehill association | 36K | Well drained | D | Very limited | Very limited |
| Epvip-Masonic-Domehill association | 15K | Well drained | D | Very limited | Very limited |
| Monolake-Roadside-Beartracker association, very steep | 8K | Well drained | D | Very limited | Very limited |
| Pinew-Joecut-Heenlake association | 5K | Well drained | D | Very limited | Very limited |
| Lastsummer-Hardshoulder association | 5K | Well drained | A | Very limited | Very limited |
| Murain association | 5K | Well drained | A | Very limited | Very limited |
| Murain-Shorthike association | 5K | Well drained | A | Very limited | Very limited |
| Toejom-Pimogran-Rock outcrop association | 5K | Excessively drained | D | Very limited | Very limited |
| Pinew-Rock outcrop association | 5K | Well drained | D | Very limited | Very limited |
| Adamatt-Domehill-Willowak association | 4K | Well drained | D | Very limited | Very limited |
| Hardnut-Rock outcrop complex, 15 to 50 percent slopes | 4K | Well drained | D | Very limited | Very limited |
| Bodiehill-Adamatt-Lastsummer association | 4K | Well drained | A | Very limited | Very limited |
| Adamatt-Domehill-Bodiehill association | 4K | Well drained | D | Very limited | Very limited |
| Water | 4K | D | Not rated | Not rated | |
| Mostval complex, 0 to 2 percent slopes | 4K | Somewhat poorly drained | B | Very limited | Very limited |
| Brokenhoe-Fisherdig association | 4K | Well drained | D | Very limited | Very limited |
| Burchflat-Celeridge-Loope association | 3K | Well drained | C | Very limited | Very limited |
| Heenlake-Loope-Chenhigh association | 3K | Well drained | D | Very limited | Very limited |
| Tephzite-Quartzhill-Hardteph association | 3K | Well drained | D | Very limited | Very limited |
| Monolake-Roadside-Beartracker association | 3K | Well drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 96% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, 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.