LOCATION SATSOP WAEstablished Series
TAXONOMIC CLASS: Coarse-loamy, isotic, mesic Andic Dystrudepts
TYPICAL PEDON: Satsop silt loam, pasture. (Colors are moist soil unless otherwise noted.)
Ap--0 to 7 inches; very dark brown(10YR 2/2) silt loam, brown (10YR 5/3) dry; moderate fine granular structure; soft, friable, nonsticky, slightly plastic; many fine roots; very strongly acid (pH 5.0); clear smooth boundary. (6 to 8 inches thick)
Bw--7 to 28 inches; olive brown (2.5Y 4/4) silt loam, light yellowish brown (2.5Y 6/4) dry; weak very fine subangular blocky structure; soft, friable, nonsticky, slightly plastic; common fine roots; moderately acid (pH 5.6); abrupt smooth boundary. (15 to 30 inches thick)
C--28 to 60 inches; light olive brown (2.5Y 5/4) very fine sandy loam, pale olive (5Y 6/3) dry; massive; very friable, nonsticky, nonplastic; few fine roots; moderately acid (pH 5.6).
TYPE LOCATION: Grays Harbor County, Washington; 1/4 mile north of Satsop, 50 feet west of Moore Road; SE1/4 section 30, T.18N., R.6W.
RANGE IN CHARACTERISTICS: The mean annual soil temperature at a depth of 20 inches ranges from 47 to 49 degrees F. These soils are usually moist. The particle-size control section contains less than 1 percent rock fragments and is commonly stratified in the lower part. The difference between mean summer and mean winter temperature is less than 25 degrees F.
The A horizon has hue of 10YR or 7.5YR, value of 2 or 3 moist, and chroma of 2 or 3 moist or dry. It is very strongly acid or strongly acid.
The Bw horizon has hue of 10YR or 2.5Y, value of 3 or 4 moist, 5 through 7 dry, and chroma of 3 or 4 moist or dry. It is silt loam, loam or sandy loam. It is strongly acid or moderately acid. The C horizon has hue of 10YR, 2.5Y or 5Y, value of 3 through 5 moist, 6 or 7 dry, and chroma of 3 or 4 moist or dry. It is very fine sandy loam or sandy loam. It is strongly acid or moderately acid. In some pedons loamy sand or sand occurs below a depth of 40 inches.
COMPETING SERIES: These are the Amostown, Ashe, Bernardston, Broadbrook, Brookfield, Cardigan, Charlton, Chatfield, Cheshire, Chestnut, Ditney, Dutchess, Edneyville, Hazel, Lordstown, Pollux, Riverhead, St. Albans, Steinsburg, Valois, Wethersfield, and Yalesville series. Amostown soils have lithologic discontinuity at a depth of 20 to 40 inches. Ashe, Cardigan, Chatfield, Ditney, Hazel, Lordstown, Marblemount, Steinsburg, and Yalesville soils have a lithic contact at a depth of 20 to 40 inches. Bernardston, Broadbrook, Nantucket, Newport, Paxton, Pittstown, and Wethersfield soils have a very firm Cr horizon at a depth of less than 20 inches. Brookfield soils have hue of 2.5YR to 7.5YR in the upper part of the B horizon. Charlton, Dutchess, St. Albans, and Valois soils have 5 to 35 percent rock fragments in the particle size control section. Cheshire soils have hue of 2.5YR or 5YR and have 5 to 35 percent rock fragments in the particle size section. Riverhead soils have stratified sand and gravel 2C horizons within the particle size control section. Information is not available to differentiate the Pollux series.
GEOGRAPHIC SETTING: These soils are on terraces and alluvial fans in main river valleys at elevations of 30 to 300 feet. These soils formed in alluvium from adjacent sandstone uplands. The coarse grain soil particles are mainly quartz. The average annual precipitation is 60 to 80 inches with relatively dry summers and mild, wet winters. The mean January temperature is about 39 degrees F and the mean July temperature is about 60 degrees F.The mean annual temperature is about 50 degrees F. and the growing season (32 degrees F.) is 200 to 240 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Carstairs, Montesa, Salzer, and Skamo soils. Carstairs soils are sandy, skeletal. Montesa soils have mottles with a chroma of 2 in the control section and are somewhat poorly drained. Salzer soils have a fine control section and are very poorly drained.
DRAINAGE AND PERMEABILITY: Well drained; slow runoff; moderately rapid permeability.
USE AND VEGETATION: The soil is used mostly for pasture and cropland. Native vegetation was mainly Douglas-fir, western red cedar, red alder, and an understory of western brackenfern and salal.
DISTRIBUTION AND EXTENT: Grays Harbor and Pacific Counties in southwest Washington. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Grays Harbor County, Washington, 1973.
REMARKS: Classification only changed 4/94 because of recent amendments to Soil Taxonomy.