Soil survey area

Routt Area, Colorado, Parts of Rio Blanco and Routt Counties

Survey Area CO648• Colorado
The short version

The most common soil here is Foidel, on about 11% of the land: a loam, a balanced mix that crumbles in your hand. Lintim and Routt come next.

About 91% of the land drains well, and 6% stays wet for long stretches; groundwater comes within two feet of the surface under 5% of it.

USDA rates 98% of the land very limited for a standard septic drain field, and 89% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 3% of the land floods occasionally or more, and bedrock lies within 40 inches under 17% 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 ground underfoot

The soils you're most likely standing on

The biggest named soils in Routt Area, Colorado, Parts of Rio Blanco and Routt Counties, each drawn five feet deep from its official USDA description, in its recorded colors.

Foidel
11% of the area
Loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Lintim
10% of the area
Loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Routt
6% of the area
Loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Bulkley
4% of the area
Silty clay loam topsoil · well drained
Smooth and slightly sticky. Holds a lot of water.
Vertisols

Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.

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 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 Routt Area, Colorado, Parts of Rio Blanco and Routt Counties. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Foidel-Rock outcrop complex, 20 to 60 percent slopes 51K Well drainedCVery limitedVery limited
Lintim loam, 3 to 12 percent slopes 41K Well drainedCVery limitedVery limited
Evna, very stony-Lintim complex, 5 to 25 percent slopes 38K Well drainedCVery limitedVery limited
Slater-Routt complex, 5 to 25 percent slopes, very stony 27K Well drainedCVery limitedVery limited
Rabbitears loam, 3 to 12 percent slopes 24K Well drainedCNot limitedVery limited
Foidel loam, 5 to 25 percent slopes 23K Well drainedCVery limitedVery limited
Routt loam, 25 to 65 percent slopes, very stony 22K Well drainedCVery limitedVery limited
Lintim loam, 3 to 25 percent slopes 22K Well drainedCVery limitedVery limited
Routt loam, 3 to 25 percent slopes, very stony 19K Well drainedCSomewhat limitedVery limited
Earsman-Rock outcrop complex, 25 to 65 percent slopes, extremely bouldery 19K Well drainedDVery limitedVery limited
Winevada-Splitro complex, 3 to 25 percent slopes 19K Well drainedCVery limitedVery limited
Fulvance very gravelly sandy loam, 25 to 65 percent slopes, very stony 18K Well drainedCVery limitedVery limited
Eckmanpark clay loam, 25 to 65 percent slopes 18K Well drainedDVery limitedVery limited
Bulkley silty clay, 12 to 25 percent slopes 17K Well drainedDVery limitedVery limited
Impass-Gourley, extremely stony complex, 3 to 25 percent slopes 17K Well drainedDVery limitedVery limited
Dunckley-Skyway complex, 15 to 65 percent slopes 17K Well drainedCVery limitedVery limited
Lintim loam, 12 to 25 percent slopes 16K Well drainedCVery limitedVery limited
Impass silty clay loam, 12 to 25 percent slopes 15K Well drainedCVery limitedVery limited
Rabbitears loam, 12 to 25 percent slopes 15K Well drainedCVery limitedVery limited
Foidel loam, 25 to 65 percent slopes 15K Well drainedCVery 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.

Mollisols
Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.
Vertisols
High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.
Alfisols
Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

What This Means

Building & Foundations

About 89% 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 98% 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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