Fremont County, Wyoming, Lander Area

Survey Area WY677• Wyoming

The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Entisols — young soils with little profile development, often on floodplains or steep slopes. 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 Fremont County, Wyoming, Lander Area. 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
Farlow-Duncom association	53K	Well drained	B	Very limited	Very limited
Patent-Forelle association	45K	Well drained	C	Very limited	Very limited
Sinkson-Thermopolis association	23K	Well drained	B	Very limited	Very limited
Thermopolis-Sinkson association	17K	Well drained	D	Very limited	Very limited
Crownest-Cotha association	16K	Well drained	D	Very limited	Very limited
Blackhall-Carmody association	14K	Well drained		Very limited	Very limited
Duncom-Farlow-Rock outcrop association	14K	Well drained	D	Very limited	Very limited
Handran-Midelight association	12K	Well drained	B	Somewhat limited	Very limited
Cotha-Blazon-Rock outcrop association	12K	Well drained	D	Very limited	Very limited
Diamondville-Forelle association	11K	Well drained	C	Somewhat limited	Very limited
Sapphire-Duncom association	11K	Well drained	C	Very limited	Very limited
Blazon-Rock outcrop association	10K	Well drained	D	Very limited	Very limited
Diamondville-Highpoint association	8K	Well drained	C	Somewhat limited	Very limited
Irigul-Rock outcrop complex, 6 to 30 percent slopes	6K	Well drained	D	Very limited	Very limited
Leavitt loam	5K	Well drained	C	Not limited	Somewhat limited
Lupinto clay loam, 0 to 6 percent slopes	5K	Well drained	C	Not limited	Somewhat limited
Leavitt-Rock outcrop association	5K	Well drained	C	Somewhat limited	Somewhat limited
Ustic Torrifluvents-Aeric Fluvaquents complex	4K	Somewhat poorly drained		Very limited	Very limited
Blazon-Patent association	4K	Well drained	D	Very limited	Very limited
Rock outcrop-Highpoint association	4K		D	Not rated	Not rated

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.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

Aridisols

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

Mollisols

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

What This Means

Building & Foundations

About 81% 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 93% 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.