LOCATION ONEPENNEE               WA

Established Series
Rev. TLS/KDPL/SBC
09/2019

ONEPENNEE SERIES

Landscape--plateaus
Landform--structural benches, ridges
Slope--0 to 35 percent
Parent material--mixed loess and residuum derived from basalt
Mean annual precipitation--230 to 380 mm
Mean annual air temperature--about 10 degrees C
Depth class--very shallow
Drainage class--well drained
Soil moisture regime--aridic (bordering on xeric)
Soil temperature regime--mesic
Soil moisture subclass--xeric

TAXONOMIC CLASS: Loamy, mixed, superactive, nonacid, mesic Lithic Xeric Torriorthents

TYPICAL PEDON: Onepennee very cobbly loam, 3 percent slopes, in an area of rangeland

A--0 to 5 cm; very cobbly loam, light yellowish brown (10YR 6/4) dry, dark brown (10YR 3/3) moist; moderate thick platy structure; slightly hard, friable, nonsticky and nonplastic; few very fine roots; common very fine vesicular pores; 10 percent gravel in horizon, 30 percent gravel and 35 percent cobbles on surface, about 45 percent rock fragments when mixed; slightly acid (pH 6.5); abrupt smooth boundary

Bw--5 to 13 cm; loam, light yellowish brown (10YR 6/4) dry, dark yellowish brown (10YR 4/4) moist; weak fine and medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine roots; few very fine tubular pores; 10 percent gravel; neutral (pH 7.0); abrupt wavy boundary

R--13 cm; fractured basalt

TYPE LOCATION: Yakama Nation, Yakima County, Washington, about 24 km south-southwest of Toppenish, on Pine Springs Road, about 3 km south of the junction with Highway 97; in the SW1/4NE1/4NE1/4 of section 17, T. 8 N., R. 19 E., Willamette Meridian; latitude 46.1837235, longitude -120.4534836, datum WGS 84 (coordinates estimated from section, township, and range)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--9 to 13 degrees C
Soil moisture--typically dry in all parts more than one-half the cumulative days per year when the soil temperature at a depth of 50 cm is higher than 5 degrees C and moist in some or all parts less than 90 consecutive days when the soil temperature at a depth of 50 cm is higher than 8 degree C
Particle-size control section--5 to 10 percent clay; 30 to 50 percent sand
Depth to bedrock--13 to 25 cm
Percentage of surface covered with gravel and cobbles--30 to 70 percent

A horizon
Hue--10YR, 7.5YR, 5YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Rock fragment content--10 to 70 percent
Reaction--6.1 to 7.3
Thickness--5 to 10 cm

Bw horizon
Hue--10YR, 7.5YR, 5YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Texture of fine-earth fraction--loam, silt loam
Rock fragment content--0 to 35 percent
Thickness--8 to 15 cm

COMPETING SERIES:
Firelake--60 to 75 percent total sand; more than 30 percent very coarse sand to medium sand in particle-size control section; pH of 7.4 to 7.8 throughout
Schawana--more than 50 percent sand in particle-size control section; pH of 7.4 to 7.8 throughout

GEOGRAPHIC SETTING:
Elevation--425 to 1025 m
Climate--semiarid; warm, dry summers; cool, moist winters
Mean annual precipitation--230 to 380 mm
Mean annual air temperature--9 to 11 degrees C
Frost-free season--120 to 160 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Badge, Bickleton, Broadax--no lithic contact within a depth of 100 cm or more
Kiona--no lithic contact within a depth of more than 150 cm
Morrow, Prosser--no lithic contact within a depth of 50 cm or more
Bakeoven, Lickskillet--loamy-skeletal particle-size class

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high

USE AND VEGETATION:
Use--livestock grazing
Vegetation--stiff sagebrush, Sandberg bluegrass, pine bluegrass, thyme eriogonum, arrowleaf goldenweed, fleabane daisy

DISTRIBUTION AND EXTENT: East slopes of Cascade Mountains in south-central Washington; MLRA 8; small extent

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Yakama Nation, Yakima County, Washington; 2014

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Depth to lithic contact--13 cm

Onepennee is a surname on the Yakama Nation Reservation. The spelling is not consistent with the Yakama orthography; however, it is accepted out of respect for the Onepennee family.

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National Cooperative Soil Survey
U.S.A.