Soil survey area

Teton National Forest, Wyoming, Parts of Teton, Fremont, Park, Sublette, and Lincoln Counties

Survey Area WY661• Wyoming
The short version

The most common soil here is Nooney family, on about 14% of the land. Ericson family and Stringam family come next.

About 94% of the land drains well, and 3% stays wet for long stretches; groundwater comes within two feet of the surface under 3% of it.

USDA rates 95% of the land very limited for a standard septic drain field, and 88% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 1% of the land floods occasionally or more, and bedrock lies within 40 inches under 44% of it.

Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.

The biggest mapped areas

The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Teton National Forest, Wyoming, Parts of Teton, Fremont, Park, Sublette, and Lincoln Counties. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Nooney family-Larkspur family-Rock outcrop association, 15 to 75 percent slopes, Broadly Defined 190K Well drainedDVery limitedVery limited
Nooney family-Stringam deep family-Rock outcrop association, 15 to 60 percent slopes, Broadly Defined 166K Well drainedBVery limitedVery limited
Ericson-Nooney-Bigcoulee families, association, 8 to 35 percent slopes, Broadly Defined 93K Well drainedCVery limitedVery limited
Ericson-Nooney families, association, 15 to 60 percent slopes, Broadly Defined 89K Well drainedCVery limitedVery limited
Midfork-Boatman-Larkspur families, association, 15 to 60 percent slopes, Broadly Defined 89K Well drainedBVery limitedVery limited
Larkspur family-Rock outcrop-Elkpeak family, association, 15 to 75 percent slopes, Broadly Defined 68K Well drainedDVery limitedVery limited
Ericson-Currycreek-Nooney families, association, 8 to 60 percent slopes, Broadly Defined 65K Well drainedCVery limitedVery limited
Ericson-Midfork-Nooney families, association, 15 to 70 percent slopes, Broadly Defined 46K Well drainedBVery limitedVery limited
Limber-Watsondraw-Kegsprings families, complex, 10 to 40 percent slopes 41K Well drainedCVery limitedVery limited
Stringam-Mikesell families, complex, 5 to 30 percent slopes 33K Well drainedBVery limitedVery limited
Jumpstart-Stringam-Mikesell families, complex, 5 to 40 percent slopes 31K Moderately well drainedCVery limitedVery limited
Cimarron-Mikesell-Paulson families, association 5 to 30 percent slopes 31K Well drainedCVery limitedVery limited
Ericson-Bigcoulee families, association, 8 to 35 percent slopes, Broadly Defined 30K Well drainedCVery limitedVery limited
Limber-Mine-Watsondraw families, complex, 5 to 30 percent slopes 23K Well drainedCVery limitedVery limited
Beaveridge-Limber-Grade families, association, 5 to 50 percent slopes 23K Well drainedCVery limitedVery limited
Beaveridge-Cimarron-Bavdark families, complex, 10 to 40 percent slopes 22K Well drainedCVery limitedVery limited
Kegsprings-Kaina-Limber families, complex, 12 to 45 percent slopes 22K Well drainedAVery limitedVery limited
Stringam-Broad Canyon-Starman families, association, 10 to 40 percent slopes 22K Well drainedBVery limitedVery limited
Coldfeet-Kegsprings-Beaveridge families, complex, 2 to 20 percent slopes 22K Well drainedCSomewhat limitedVery limited
Beaveridge-Bavdark-Cimarron families, complex, 2 to 20 percent slopes 21K Well drainedCSomewhat limitedVery 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.

Alfisols
Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.
Mollisols
Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.
Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.
Entisols
Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

What This Means

Building & Foundations

About 88% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes. A geotechnical assessment is recommended before building.

Septic Systems

About 95% 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.

Look Up a Specific Address

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