LOCATION KAKYAWALA               WA

Established Series
IRD SDH/JMB/SBC
09/2019

KAKYAWALA SERIES

Landscape--mountains
Landform--mountain slopes, structural benches
Slope--2 to 35 percent
Parent material--volcanic ash over block-and-ash flow deposits
Mean annual precipitation--about 1000 mm
Mean annual air temperature--about 7 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--frigid
Soil moisture subclass--typic

TAXONOMIC CLASS: Ashy, mixed, frigid Humic Vitrixerands

TYPICAL PEDON: Kakyawala ashy sandy loam in an area of forestland, on a 14-percent, southeast-facing slope at an elevation of 1250 m (All textures are apparent field textures.)

Oi--0 to 5 cm; slightly decomposed leaves, needles, twigs, and cones; abrupt smooth boundary

A--5 to 23 cm; ashy sandy loam, dark brown (10YR 3/3) dry, very dark brown (10YR 2/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; weakly smeary; many very fine and fine and few medium and coarse roots; common fine irregular pores; slightly acid (pH 6.3), NaF pH 10.2; abrupt smooth boundary

Bw1--23 to 112 cm; ashy sandy loam, brown (10YR 4/3) dry, dark brown (7.5YR 3/2) moist; weak fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; weakly smeary; common very fine, fine, medium, and coarse roots; common very fine and few fine irregular pores; 5 percent gravel; slightly acid (pH 6.1); NaF pH 11.0; clear smooth boundary

2Bw2--112 to 163 cm; very stony ashy sandy loam, yellowish brown (10YR 5/4) dry, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; weakly smeary; few fine, medium, and coarse roots; few fine and medium irregular pores; 5 percent gravel, 10 percent cobbles, and 30 percent stones; slightly acid (pH 6.5); NaF pH 10.8

TYPE LOCATION: Yakama Nation, Yakima County, Washington, about 2 km southwest of Snowplow Mountain; about 640 m south and 75 m west of the northeast corner of section 16, T. 7 N., R. 11 E.; latitude 46.0970649, longitude -121.4281311, datum WGS 84 (coordinates estimated from section, township, and range)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--7 to 8 degrees C
Moisture control section--usually moist, but dry in all parts 45 to 60 consecutive days following summer solstice
Particle-size control section--upper 100 cm of mineral soil; dominantly volcanic ash; moist bulk density of 0.75 to 0.90 g/cm3; glass content of 5 to 30 percent; acid oxalate aluminum plus one-half iron of 2 to 3 percent; 15-bar water retention of 8 to 12 percent (air-dried samples)
Rock fragment content--0 to 10 percent in particle-size control section; 35 to 60 percent below a depth of 100 cm

Oi horizon
Thickness--0 to 10 cm

A horizon
Value--3 or 4 dry, 2 or 3 moist
Chroma--2 to 4 dry or moist
Texture--ashy sandy loam, ashy loamy sand
Thickness--15 to 30 cm

Bw1 horizon
Hue--7.5YR, 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 to 4 dry or moist
Texture--ashy sandy loam, ashy loamy sand
Thickness--71 to 114 cm

2Bw2 horizon
Hue--7.5YR, 10YR
Value--4 or 5 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Texture--very cobbly ashy sandy loam, very stony ashy sandy loam, very gravelly ashy sandy loam

A 2BC horizon is in some pedons.

COMPETING SERIES:
Watergate--35 to 60 percent rock fragments in lower part of particle-size control section
Yatama--35 to 80 percent rock fragments in lower part of particle-size control section

GEOGRAPHIC SETTING:
Elevation--1075 to 1475 m
Climate--warm, dry summers; cool, moist winters
Mean annual precipitation--760 to 1100 mm
Mean annual air temperature--6 to 7 degrees C
Frost-free season--70 to 100 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Wanaishchit--on mountain plateaus and side slopes; argillic horizon
Snowplow--on mountain benches and side slopes; skeletal subsoil

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

USE AND VEGETATION:
Use--timber production, livestock grazing, wildlife habitat, watershed, recreation
Native vegetation--grand fir, Douglas-fir, ponderosa pine, elk sedge, sidebells pyrola, common prince's pine

DISTRIBUTION AND EXTENT: East slopes of the Cascade Mountains in south-central Washington; MLRA 6; small extent

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

SERIES ESTABLISHED: Yakama Nation, Yakima County, Washington; 2004

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Umbric epipedon--zone from 5 to 112 cm
*Cambic horizon--zone from 23 to 163 cm
*Andic soil properties--zone from 5 to 163 cm
*Particle-size control section--zone from 5 to 107 cm

The Kakyawala series originally was named the Kahmah series. Kakya wala translates to bird creek in Yakama. The type location for this series is near Bird Creek.

ADDITIONAL DATA:
Partial laboratory data--sample number 73B-16-1; Yakama Nation Soils Laboratory, Toppenish, Washington

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National Cooperative Soil Survey
U.S.A.