Coleville-Bridgeport Area, Parts of Alpine and Mono Counties, California

Survey Area CA686• California

The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. 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. Search your address to find the exact soil composition, drainage, and series details at your specific location.

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

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Mollisols

Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Aridisols

Dry-climate soils with low organic matter. Often have caliche layers that make excavation difficult. Low shrink-swell is good for foundations.

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.