LOCATION LYVILLE                 WA

Established Series
Rev. KDV/RWL/PNP/KDPL/SBC
09/2019

LYVILLE SERIES

Landscape--plateaus, canyonlands
Landform--structural benches, canyon slopes
Slope--2 to 65 percent
Parent material--colluvium derived from basalt mixed with loess
Mean annual precipitation--about 510 mm
Mean annual air temperature--about 9 degrees C
Depth class--deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Ultic Haploxerolls

TYPICAL PEDON: Lyville very bouldery loam, forested, on a 3-percent, west-facing slope at an elevation of 640 m

Oi--0 to 3 cm; slightly decomposed needles, twigs, and leaves

A1--3 to 10 cm; very bouldery loam, brown (7.5YR 5/4) dry, dark reddish brown (5YR 3/2) moist; moderate very fine granular structure; soft, friable, slightly sticky and slightly plastic; common fine and very fine roots; common very fine irregular pores; 5 percent gravel, 5 percent cobbles, and 5 percent boulders; neutral (pH 6.6); clear smooth boundary

A2--10 to 20 cm; very bouldery loam, brown (7.5YR 5/4) dry, dark reddish brown (5YR 3/3) moist; weak very fine granular structure; soft, friable, slightly sticky and slightly plastic; common fine and very fine roots; common very fine irregular pores; 10 percent gravel, 5 percent cobbles, and 5 percent boulders; slightly acid (pH 6.4); clear smooth boundary

AB--20 to 36 cm; gravelly loam, brown (7.5YR 5/4) dry, dark reddish brown (5YR 3/3) moist; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and very fine roots; many very fine irregular pores and few fine and very fine tubular pores; 20 percent gravel; slightly acid (pH 6.2); clear smooth boundary

Bw1--36 to 71 cm; gravelly loam, brown (7.5YR 5/4) dry, dark reddish brown (5YR 3/4) moist; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and few medium and very fine roots; many very fine irregular pores and few very fine tubular pores; 30 percent gravel; slightly acid (pH 6.2); clear smooth boundary

Bw2--71 to 114 cm; very gravelly loam, brown (7.5YR 5/4) dry, dark reddish brown (5YR 3/4) moist; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common fine roots; many very fine irregular pores; 50 percent gravel; moderately acid (pH 6.0); abrupt wavy boundary

R--114 cm; fractured basalt

TYPE LOCATION: Klickitat County, Washington, about 6.5 km north of Goldendale; about 340 m north and 400 m west of the southeast corner of section 30, T. 5 N., R. 16 E.; latitude 45 degrees, 53 minutes, 12 seconds north and longitude 120 degrees, 50 minutes, 50 seconds west

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 10 degrees C
Soil moisture control section--dry in all parts 75 to 90 consecutive days during 4 months following summer solstice in 6 years or more out of 10 years
Thickness of solum and depth to bedrock--100 to 150 cm
Thickness of mollic epipedon--25 to 50 cm
Particle-size control section--18 to 25 percent clay; 15 to 35 percent rock fragments in upper part, 45 to 60 percent in lower part, and weighted average of 35 to 45 percent

A horizon
Hue--5YR to 10YR
Value--4 or 5 dry, 2 or 3 moist
Chroma--1 to 4 dry, 2 or 3 moist
Reaction--6.1 to 7.3
Combined thickness--13 to 30 cm

AB horizon
Thickness--15 to 20 cm

Bw horizon
Hue--5YR to 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 or 4 dry or moist
Reaction--5.6 to 6.5
Combined thickness--69 to 94 cm

COMPETING SERIES:
Bald--50 to 100 cm (moderately deep) to a lithic contact (basalt); dry 45 to 60 consecutive days following summer solstice
Briedwell, Spokel--no lithic contact within a depth of more than 150 cm; dry 45 to 60 consecutive days following summer solstice; mean annual soil temperature of 11 to 13 degrees C; 35 to 60 percent rounded and subrounded rock fragments in particle-size control section
Fivelakes--no lithic contact within a depth of more than 150 cm; dry 90 to 105 consecutive days following summer solstice; 5 to 20 percent volcanic glass in upper 18 to 36 cm
Huston--no lithic contact within a depth of more than 150 cm; 7 to 18 percent clay and 35 to 60 percent rounded and subrounded rock fragments in particle-size control section
Mowako--50 to 100 cm (moderately deep) to a paralithic contact (sedimentary rock); dry 45 to 60 consecutive days following summer solstice
Rockford--no lithic contact within a depth of more than 150 cm; solum 45 to 97 cm thick; 45 to 97 cm deep to very hard, firm 2C horizon
Spokel--no lithic contact within a depth of more than 150 cm
Suta--dry 60 to 75 consecutive days following summer solstice

GEOGRAPHIC SETTING:
Elevation--370 to 1150 m
Climate--warm, dry summers; cool, moist winters
Mean annual precipitation--380 to 640 mm
Mean January air temperature--about -2 degrees C
Mean July air temperature--about 19 degrees C
Mean annual air temperature--about 8 to 9 degrees C
Frost-free season--80 to 140 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Goldendale--on hillslopes and plateaus
Nook--fine-loamy particle-size class; on alluvial fans and low terraces
Maydol--fine-loamy particle-size class; on plateaus
Suta--on canyon side slopes

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

USE AND VEGETATION:
Use--limited timber production, livestock grazing, homesite development, and wildlife habitat
Vegetation--mainly scattered ponderosa pine and Oregon white oak and an understory of elk sedge, antelope bitterbrush, common snowberry, snowbrush ceanothus, Idaho fescue, and squawcarpet

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

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

SERIES ESTABLISHED: Klickitat County, Washington; 2003

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Mollic epipedon--zone from 3 to 36 cm
*Cambic horizon--zone from 36 to 114 cm
*Depth to lithic contact--114 cm
*Particle-size control section--zone from 28 to 103 cm; weighted average of 37 percent rock fragments

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National Cooperative Soil Survey
U.S.A.