LOCATION KALALOCH WAEstablished Series
TYPICAL PEDON: Kalaloch medial loam - forested. (Colors are for moist soil unless otherwise noted. All textures are apparent field textures).
Oi--0 to 4 inches; slightly decomposed needles, leaves, and twigs.
A--4 to 6 inches, brown (7.5YR 4/4) medial loam, light brown (7.5YR 6/4) dry; moderate medium and coarse granular structure; slightly hard, friable, nonsticky and slightly plastic; many roots and pores; very strongly acid (pH 4.6); clear smooth boundary. (2 to 4 inches thick)
Bw1--6 to 12 inches; dark yellowish brown (10YR 4/4) medial loam, light yellowish brown (10YR 6/4) dry; moderate medium and coarse subangular blocky structure; slightly hard, friable, nonsticky and slightly plastic; many roots and pores; very strongly acid (pH 4.8); clear wavy boundary. (4 to 8 inches thick)
Bw2--12 to 17 inches; dark grayish brown (10YR 4/2) medial loam, light brownish gray (10YR 6/2) dry; weak medium and thick platy structure; slightly hard, friable, nonsticky and slightly plastic; many roots and pores; very strongly acid (pH 4.8); gradual wavy boundary. (5 to 25 inches thick)
BC--17 to 29 inches; dark grayish brown (2.5Y 4/2) medial fine sandy loam, light brownish gray (2.5Y 6/2) dry; massive; slightly hard, very friable, nonsticky and nonplastic; common roots and pores; very strongly acid (pH 4.8); clear smooth boundary. (0 to 12 inches thick)
2C1--29 to 37 inches; dark gray (5Y 4/1) loamy fine sand, gray (5Y 6/1) dry; massive; soft, very friable, nonsticky and nonplastic; common roots; many pores; very strongly acid (pH 4.5); clear smooth boundary. (0 to 10 inches thick)
2C2--37 to 64 inches; dark gray (5Y 4/1) fine sand, gray (5Y 6/1) dry; massive; soft, very friable, nonsticky and nonplastic; few roots; many pores; very strongly acid (pH 4.5)
TYPE LOCATION: Jefferson County, Washington; about mile NE of shake mill on Highway 101, in the NW , SW , SE , of sec. 7, T. 26 N., R. 12 W.
RANGE IN CHARACTERISTICS: The mean annual soil temperature is 47 to 52 degrees F. The difference between the mean summer and mean winter soil temperature is 5 to 9 degrees F. The soil moisture regime is udic. The upper part of the particle-size control section has andic soil properties with a cumulative thickness of 20 to 40 inches and has 0 to 20 percent gravel. The andic soil material has an estimated moist bulk density of 0.75 to 0.90 g/cc, acid oxalate extractable aluminum plus one-half the acid oxalate iron of 2 to 4 percent, phosphate retention of 85 to 100 percent, 15-bar water retention of 20 to 35 percent for air-dried samples. Acid oxalate iron of 1.5 to 3.0 percent. It has 2 to 3 cmol/kg of aluminum. The lower part of the particle-size control lacks andic soil properties and has 0 to 5 percent clay and 0 to 65 percent gravel.
The A horizon has hue of 5YR through 10YR moist, 7.5YR and 10YR dry; value of 2 to 4 moist, 3 through 6 dry; and chroma of 2 through 4 moist and dry. It has 10 to 25 percent organic matter. It is medial loam or medial silt loam.
The Bw horizon has hue of 7.5YR or 10YR, value of 3 or 4 moist, 5 through 7 dry; and chroma of 3 through 6 moist and dry. Texture is medial loam, medial silt loam, medial silty clay loam, or gravelly medial loam. Structure is angular blocky or subangular blocky. It has 4 to 12 percent organic matter decreasing to less than 7 percent within 20 inches of the mineral soil surface.
The BC horizon, when present, has hue of 10YR or 2.5Y. It is medial loam or medial fine sandy loam.
The 2C horizon, when present, has hue of 2.5Y or 5Y moist and dry and value of 3 or 4 moist, 5 or 6 dry. It is loamy sand, loamy fine sand, fine sand, or sand. Reaction is strongly acid or very strongly acid.
The 3C horizon, when present, has hue of 10YR to 5Y moist and dry, value of 3 or 4 moist, 5 or 6 dry and chroma of 2 to 4 moist and 2 to 6 dry. It is extremely gravelly loamy sand, extremely cobbly loamy sand, extremely gravelly sand, or extremely cobbly sand. Reaction is strongly acid or very strongly acid.
COMPETING SERIES: There are the Donkeycreek and Wolfer Series. Donkeycreek soils are 14 to 20 inches deep to sandy-skeletal material. Wolfer soils have an umbric epipedon.
GEOGRAPHIC SETTING: Kalaloch soils are on river terraces at elevations of 0 to 740 feet. They formed in alluvium over glacial outwash. Slopes are 0 to 35 percent. The soils are in a mild marine climate and have cool, moist summers and cool, wet winters. Mean annual precipitation is 100 to 140 inches. Average January temperature is about 38 degrees F, average July temperature is about 61 degrees F, and the mean annual temperature is about 49 degrees F. Frost-free season is 140 to 220 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Hoh, Huel, Mudcreek, and Queets soils. Hoh soils are coarse-loamy and lack a cambic horizon. Huel soils are sandy-skeletal and lack a cambic horizon. Queets soils are medial. Mudcreek soils are on ground moraines and have dense till at 20 to 40 inches.
DRAINAGE AND PERMEABILITY: Well drained, medium runoff, permeability of the surface layer and subsoil is moderate and permeability of the substratum is rapid.
USE AND VEGETATION: Timber production is the principal use. small areas are used for homesites and small commercial buildings. Native vegetation is predominantly western hemlock and red alder with some Sitka spruce and vine maple. Understory species include salmonberry, salal, red huckleberry, elderberry, western swordfern, deer fern, and Oregon oxalis.
DISTRIBUTION AND EXTENT: West side of the Olympic Peninsula, Washington; MLRA 4A. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Jefferson County, Washington, 1968.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
ochric epipedon, a cambic horizon from 2 to 13 inches, and sandy material at 25 inches. Andic soil properties extend from 4 to 29 inches. This series includes sandy and sandy-skeletal particle-size classes in the lower part of the particle-size control section.
All depths to diagnostic horizons and features are measured from the top of the first mineral horizon.
In 2007 the type location was move to the pedon as described in the 1975 Soil Survey for Jefferson County Area, Washington.