LOCATION WUKSACHI CA
Established Series
JBB/CES
09/2021
WUKSACHI SERIES
The Wuksachi series consists of very deep, very poorly drained soils formed in organic material over alluvium derived from granitic rocks. The Wuksachi soils are on flood plains and low flood-plain steps of the Sierra Nevada Mountains. Slopes range from 0 to 5 percent. The mean annual precipitation is about 1080 mm and the mean annual air temperature is about 9 degrees C.
TAXONOMIC CLASS: Loamy, isotic, euic, mesic Terric Haplosaprists
TYPICAL PEDON: Wuksachi mucky peat on a south facing (165 degree), 3 percent slope under a cover of bulrush, spikerush, and perennial forbs at an elevation of 1943 meters. (Colors are for dry soils unless otherwise noted. When described on May 24, 2013 the soil was wet throughout. A water table was observed at 28 cm.)
Oe--0 to 14 cm; very dark gray (10YR 3/1) mucky peat, black (7.5YR 2.5/1) moist; structureless massive; common very fine, fine, and medium roots throughout; NaF pH 8.5; strongly acid (pH 5.4); clear smooth boundary. (5 to 20 cm thick)
Oa--14 to 45 cm; dark gray (10YR 4/1) muck, black (10YR 2/1) moist; structureless massive; common very fine, fine, and medium roots throughout; NaF pH 8.5; strongly acid (pH 5.2); clear smooth boundary. (25 to 75 cm thick)
A--45 to 70 cm; dark gray (10YR 4/1) mucky loamy sand, very dark gray (5Y 3/1) moist; 7 percent clay; moderate fine subangular blocky structure; soft, friable, slightly sticky, slightly plastic; common very fine and fine roots throughout; common very fine irregular pores; 3 percent subangular indurated granite fine gravel; NaF pH 9.0; strongly acid (pH 5.4); gradual smooth boundary. (10 to 25 cm thick)
C--70 to 95 cm; dark gray (10YR 4/1) sandy loam, very dark gray (5Y 3/1) moist; 10 percent clay; structureless massive; soft, friable, slightly sticky, nonplastic; common very fine and fine roots throughout; common very fine irregular pores; 5 percent medium faint irregular masses of oxidized iron in matrix; 2 percent subangular indurated granite fine gravel; NaF pH 8.5; strongly acid (pH 5.2); gradual smooth boundary. (15 to 100 cm thick)
Cg1--95 to 120 cm; 50 percent yellowish brown (10YR 5/6) and 50 percent dark gray (10YR 4/1) sandy loam, greenish black (10Y 2.5/1) moist; 13 percent clay; structureless massive; soft, friable, slightly sticky, nonplastic; common very fine, fine, and medium roots throughout; common very fine irregular pores; 25 percent medium distinct irregular masses of oxidized iron in matrix; reduced matrix; 2 percent subangular indurated granite fine gravel; NaF pH 8.0; moderately acid (pH 5.6); gradual smooth boundary.
Cg2--120 to 145 cm; dark gray (10YR 4/1) loamy sand, greenish black (10Y 2.5/1) moist; 8 percent clay; structureless massive; soft, friable, nonsticky, nonplastic; common very fine and fine roots throughout; common very fine irregular pores; reduced matrix; 5 percent fine distinct irregular masses of oxidized iron in matrix; NaF pH 8.0; moderately acid (pH 5.6); gradual smooth boundary.
Cg3--145 to 160 cm; grayish brown (2.5Y 5/2) loamy sand, 40 percent greenish gray (10Y 6/1) and 60 percent dark gray (N 4/), moist; 7 percent clay; structureless massive; soft, friable, slightly sticky, nonplastic; common very fine and fine roots throughout; common very fine irregular pores; reduced matrix; 6 percent subangular indurated granite fine gravel; NaF pH 8.0; strongly acid (pH 5.4).
TYPE LOCATION: Tulare County, California, in Round Meadow in the Giant Forest of Sequoia National Park; USGS 7.5 minute topographic quadrangle: Giant Forest, California; WGS84 36.567617 latitude and -118.768023 longitude; UTM zone 11 4048362 meters N 341796 meters E NAD83.
RANGE IN CHARACTERISTICS:
Soil temperature: The mean annual soil temperature at 50 cm is 8 to 11 degrees C and the difference between mean summer and mean winter soil temperature is greater than 6 degrees C. The soils have a mesic temperature regime.
Soil moisture: The soils have an aquic soil moisture regime. The soil is saturated in some part throughout the year, with a seasonal high water table dropping below 25 cm in late summer and fall.
Diagnostic Feature(s):
Aquic conditions: present within 25 cm
Organic matter: 40 to 60 percent in the organic horizon(s)
Base saturation: less than 50 percent (by ammonium acetate)
Depth to redoximorphic features: 25 to 100 cm
Particle size control section weighted average:
Rock fragments: 0 to 15 percent gravel
Clay content: 1 to 18 percent
Oe or Oa horizon(s)
Hue: 7.5YR, 10YR
Value: 3 or 4 dry, 2 moist
Chroma: 1 or 2, dry or moist
Texture: mucky peat, peat
Rock fragments: 0 to 15 percent gravel
Reaction: very strongly to moderately acid
A horizon
Hue: 10YR dry; 10YR, 2.5Y, 5Y moist
Value: 3 to 5 dry, 2 or 3 moist
Chroma: 1 or 2, dry or moist
Texture: sandy loam, fine sandy loam, coarse sandy loam, loamy sand, loamy coarse sand
Clay content: 5 to 15 percent
Rock fragments: 0 to 15 percent gravel
Reaction: very strongly to moderately acid
C horizon
Hue: 10YR, 2.5Y dry; 10YR, 2.5Y, 5Y moist
Value: 4 or 5 dry, 2 to 4 moist
Chroma: 1 or 2, dry or moist
Texture: sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, sand, coarse sand
Clay content: 1 to 18 percent
Rock fragments: 0 to 15 percent gravel
Reaction: very strongly to moderately acid
Redoximorphic features:
Masses of oxidized iron in matrix
Quantity: common to many
Size: fine to coarse
Cg horizons
Hue: 7.5YR,10YR, 2.5Y, 5Y dry; 2.5Y, 5Y, 10Y, N moist
Value: 4 to 7 dry, 2 to 5 moist
Chroma: 1 or 2 dry, 1 moist
Texture: sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, sand, coarse sand
Clay content: 1 to 18 percent
Rock fragments: 0 to 15 percent gravel
Reaction: strongly to moderately acid
Redoximorphic features:
Masses of oxidized iron in matrix
Quantity: none to many
Size: fine to medium
Reduced matrix
COMPETING SERIES: There are no other series in this family at this time.
GEOGRAPHIC SETTING: The Wuksachi soils are on concave to linear treads of flood plains and low flood-plain steps. Slopes range from 0 to 5 percent. These soils formed in organic material over alluvium derived from granite and granodiorite. Elevation is 1520 to 2130 meters. The climate is Mediterranean with warm, dry summers and cool, moist winters. The mean annual precipitation is 535 to 1165 mm and the mean annual air temperature is 7 to11 degrees C. The frost free season is 120 to 155 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Wobonuch soils. The Wobonuch soils are on floodplain steps and are somewhat poorly drained.
DRAINAGE AND PERMEABILITY: Very poorly drained, moderately high to very high saturated hydraulic conductivity. Frequent flooding for brief (2 to 7 days) duration beginning in April, frequent ponding for long (7 to 30 days) duration beginning in April. Seasonal high water table to 0 cm (soil surface)
USE AND VEGETATION: This soil is used for recreation, wildlife habitat, and watershed. Vegetation is panicled bulrush, common spikerush, western cowbane, narrow leaved lotus, and knotweed.
DISTRIBUTION AND EXTENT: Sierra Nevada Mountains of California; MLRA 22A. These soils are of limited extent.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California
SERIES PROPOSED: Tulare County, California in Sequoia and Kings Canyon National Parks. Source of name from the band of Western Mono (Monache) that historically gathered near the Giant Forest in summer.
REMARKS:
Particle Size Control Section for this pedon: 45 to 130 cm
Diagnostic horizons and features recognized in this pedon are:
Hemic Soil Materials 0 to 14 cm
Aquic Conditions 0 to 160 cm
Sapric Soil Materials 14 to 45 cm
Redox Concentrations 70 to 95 cm
Reduced Matrix 95 to 160 cm
ADDITIONAL DATA:
Pedon information for this type location only:
NASIS User Pedon ID: 2013CA7921031
Soil classified using the 12th Edition of the Keys to Soil Taxonomy.
National Cooperative Soil Survey
U.S.A.