LOCATION WANAISHCHIT WA
Established Series
Rev. PNP/KDPL/SBC
09/2019
WANAISHCHIT SERIES
Landscape--mountains, plateaus
Landform--mountain slopes, structural benches
Slope--0 to 20 percent
Parent material--volcanic ash over loess and material derived from basalt
Mean annual precipitation--about 1000 mm
Mean annual air temperature--about 6 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--frigid
Soil moisture subclass--typic
TAXONOMIC CLASS: Ashy over loamy, mixed over isotic, frigid Alfic Udivitrands
TYPICAL PEDON: Wanaishchit ashy sandy loam in an area of forestland, on a 5-percent, east-facing slope at an elevation of 790 m (All textures are apparent field textures.)
Oi--0 to 8 cm; slightly decomposed needles, bark, twigs, and cones
A--8 to 64 cm; ashy sandy loam, brown (10YR 4/3) dry, dark brown (10YR 3/3) moist; weak fine and very fine granular structure; soft, very friable, nonsticky and nonplastic; weakly smeary; many very fine and fine and few medium roots; common fine irregular pores; 10 percent gravel; slightly acid (pH 6.3); gradual smooth boundary
Bw--64 to 94 cm; ashy sandy loam, dark yellowish brown (10YR 4/6) dry, dark yellowish brown (10YR 3/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; weakly smeary; many very fine, fine, and medium and few coarse roots; common fine irregular pores; 5 percent gravel; moderately acid (pH 5.8); clear smooth boundary
2Bt1--94 to 119 cm; fine sandy loam, yellowish brown (10YR 5/6) dry, dark yellowish brown (10YR 3/6) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and nonplastic; few very fine and fine and common medium roots; common very fine tubular pores; few thin clay films on faces of peds; 10 percent gravel; slightly acid (pH 6.5); clear smooth boundary
2Bt2--119 to 168 cm; loam, yellowish brown (10YR 5/6) dry, dark brown (7.5YR 3/4) moist; strong coarse subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; few fine and medium tubular pores; common faint clay films on faces of peds and in pores; 5 percent gravel; slightly acid (pH 6.5)
TYPE LOCATION: Yakama Nation, Yakima County, Washington, about 10 km north of the Cougar Creek Guard Station; about 520 m south and 180 m west of the northeast corner of section 3, T. 8 N., R. 12 E.; latitude 46.2107851, longitude -121.2834826, datum WGS 84 (coordinates estimated from section, township, and range)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature at a depth of 50 cm--7 to 8 degrees C
Moisture control section--usually moist, but dry in all parts 30 to 45 consecutive days following summer solstice
Particle-size control section--0 to 15 percent gravel in upper part (ash mantle); 15 to 27 percent clay and 0 to 35 percent hard rock fragments in lower part
Thickness of umbric epipedon--25 to 64 cm
Volcanic ash mantle
*Thickness--64 to 97 cm
*Moist bulk density--0.75 to 0.9 g/cm3
*Glass content--5 to 30 percent
*Ammonium oxalate aluminum plus one-half iron--2 to 3 percent
*15-bar water retention--8 to 12 percent (air-dried samples)
Oi horizon
Thickness--3 to 8 cm
Hue--7.5YR, 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--2 or 3 dry or moist
Gravel content--0 to 10 percent
Thickness--25 to 64 cm
Bw horizon
Hue--7.5YR, 10YR
Value--4 to 6 dry, 3 or 4 moist
Chroma--3 to 6 dry or moist
Gravel content--0 to 15 percent
Texture--ashy sandy loam, ashy coarse sandy loam
Reaction--5.6 to 6.5
Thickness--25 to 56 cm
2Bt horizon
Hue--7.5YR, 10YR
Value--4 or 5 dry, 3 or 4 moist
Chroma--3 to 6 dry or moist
Texture--fine sandy loam, loam, gravelly loam
Content of hard rock fragments--0 to 35 percent
Content of weathered (saprolitic) basalt pararock fragments--10 to 30 percent in some pedons
Combined thickness--51 to 86 cm
COMPETING SERIES:
Nank--volcanic ash mantle 36 to 64 cm thick; ochric epipedon
GEOGRAPHIC SETTING:
Elevation--790 to 1400 m
Climate--warm, dry summers; cool, moist winters
Mean annual precipitation--890 to 1150 mm, mainly snow
Mean annual air temperature--6 to 7 degrees C
Frost-free season--70 to 100 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Nchitaak--on mountain side slopes; ashy over loamy-skeletal particle-size class
Singh--on benches, plateaus, and side slopes; ashy over loamy-skeletal particle-size class
Yatama--on mountain benches and side slopes; ashy particle-size class; argillic horizon
Yikwil--on mountain plateaus and benches; ashy over loamy skeletal particle-size class
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--mainly timber production, livestock grazing, wildlife habitat, watershed, and recreation
Native vegetation--grand fir, Douglas-fir, ponderosa pine, vine maple, creeping snowberry, prince's pine, Cascade Oregon grape, California hazel, northern twinflower, queencup beadlily, broadleaf starflower, false Solomon's seal
DISTRIBUTION AND EXTENT: Eastern slopes of Cascade Mountains, Yakama Nation, Yakima County, 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 8 to 64 cm
*Cambic horizon--zone from 64 to 94 cm
*Argillic horizon--zone from 94 to 168 cm
*Andic soil properties--zone from 8 to 94 cm
*Particle-size control section--zone from 8 to 108 cm
Wana ishchit translates to river road in Yakama. The type location for this series is adjacent to Klickitat River Road. This series originally was named the Piscoe series.
National Cooperative Soil Survey
U.S.A.