Soil survey area

Crook County Area, Oregon

Survey Area OR618• Oregon
The short version

The most common soil here is Ateron, on about 5% of the land: a very stony loam, a balanced mix that crumbles in your hand. Sintuf and Anatone come next.

About 96% of the land drains well, and 2% stays wet for long stretches; groundwater comes within two feet of the surface under 2% of it.

USDA rates 98% of the land very limited for a standard septic drain field, and 93% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: bedrock lies within 40 inches under 75% 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 Crook County Area, Oregon, each drawn five feet deep from its official USDA description, in its recorded colors.

Ateron
5% of the area
Very stony loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Sintuf
4% of the area
Very channery ashy sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Mollisols
Anatone
3% of the area
Very cobbly silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Mollisols
Normauk
3% of the area
Ashy sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Andisols
Canest
3% of the area
Very cobbly clay loam topsoil · well drained
Firm and a little sticky. Holds water and nutrients well.
Mollisols
Maule
3% of the area
Stony ashy sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Mollisols

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 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 Crook County Area, Oregon. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Booth-Powellbutte complex, 0 to 12 percent slopes 58K Well drainedDVery limitedVery limited
Wileyflat-Sintuf complex, 0 to 15 percent slopes 46K Well drainedCVery limitedVery limited
Canest-Anatone complex, 0 to 10 percent slopes 44K Well drainedDVery limitedVery limited
Erakatak-Ateron complex, 12 to 30 percent south slopes 32K Well drainedDVery limitedVery limited
Booth-Ateron complex, 2 to 20 percent slopes 28K Well drainedDVery limitedVery limited
Anatone-Bocker complex, 2 to 20 percent slopes 24K Well drainedDVery limitedVery limited
Carryback-Hackleman complex, 0 to 15 percent slopes 23K Well drainedDVery limitedVery limited
Cogginsflat-Fopiano complex, 2 to 25 percent slopes 23K Well drainedCVery limitedVery limited
Wileyflat-Egyptcreek-Sintuf complex, 5 to 50 percent slopes 22K Well drainedCVery limitedVery limited
Tweener-Erakatak-Sintuf complex, 5 to 20 percent slopes 20K Well drainedDVery limitedVery limited
Canest-Ateron-Powellbutte complex, 0 to 15 percent slopes 19K Well drainedDVery limitedVery limited
Normauk-Shotsprings complex, 10 to 30 percent slopes 18K Well drainedCVery limitedVery limited
Canest-Tweener complex, 0 to 10 percent slopes 18K Well drainedDVery limitedVery limited
Maule-Kidnapspring complex, 0 to 30 percent slopes 17K Well drainedCVery limitedVery limited
Statz complex, 1 to 15 percent slopes 17K Well drainedDVery limitedVery limited
Egyptcreek-Sintuf-Wileyflat complex, 5 to 50 percent slopes 16K Well drainedCVery limitedVery limited
Hackleman-Ninemile complex, 3 to 25 percent slopes 16K Well drainedCVery limitedVery limited
Terraverde-Smiling-Mackatie complex, mass failure, 15 to 30 percent slopes 16K Well drainedCVery limitedVery limited
Searles-Lickskillet complex, 12 to 35 percent south slopes 16K Well drainedDVery limitedVery limited
Anatone-Ateron complex, 12 to 30 percent south slopes 16K Well drainedDVery 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.
Andisols
Volcanic ash soils — light, porous, and fertile. Excellent drainage, but low density can complicate foundations.

What This Means

Building & Foundations

About 93% 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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