LOCATION SAGEMOOR WA
Established Series
Rev. JWR/TLA/KDPL/KH
09/2019
SAGEMOOR SERIES
Landscape--valleys
Landform--dissected terraces
Slope--0 to 60 percent
Parent material--loess over thinly laminated silty lacustrine sediment
Mean annual precipitation--about 180 mm
Mean annual air temperature--about 10 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--aridic
Soil temperature regime--mesic
Soil moisture subclass--xeric
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, mesic Xeric Haplocambids
TYPICAL PEDON: Sagemoor silt loam, cultivated (All textures are apparent field textures.)
Ap--0 to 23 cm; silt loam, light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; common fine roots; many very fine and fine irregular pores; noncalcareous; slightly alkaline (pH 7.4); abrupt smooth boundary
Bw--23 to 48 cm; silt loam, pale brown (10YR 6/3) dry, brown (10YR 4/3) moist; weak medium and coarse prismatic structure; soft, very friable, slightly sticky and slightly plastic; common fine roots; many very fine tubular pores; noncalcareous; slightly alkaline (pH 7.8); abrupt wavy boundary
2Bk--48 to 64 cm; silt loam and very fine sandy loam, light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; silt loam is hard, firm, slightly sticky and slightly plastic and very fine sandy loam is slightly hard, friable, nonsticky and nonplastic; thinly laminated and stratified; few fine roots; many very fine tubular pores; violently effervescent, lime concentrated in seams on surface of plates; moderately alkaline (pH 8.4); abrupt wavy boundary
2C1--64 to 86 cm; silt loam and very fine sandy loam, light brownish gray (2.5Y 6/2) dry, dark grayish brown (2.5Y 4/2) moist; massive; silt loam is hard, firm, slightly sticky and slightly plastic and very fine sandy loam is slightly hard, friable, nonsticky and nonplastic; thinly laminated and stratified; few fine roots; many very fine tubular pores; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary
2C2--86 to 102 cm; silt loam and very fine sandy loam, grayish brown (2.5Y 5/2) dry, very dark grayish brown (2.5Y 3/2) moist; massive; silt loam is hard, firm, slightly sticky and slightly plastic and very fine sandy loam is slightly hard, friable, nonsticky and nonplastic; thinly laminated; few fine roots; few very fine tubular pores; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary
2C3--102 to 117 cm; very fine sandy loam, grayish brown (2.5Y 5/2) dry, very dark grayish brown (2.5Y 3/2) moist; massive; slightly hard, very friable, nonsticky and nonplastic; few fine roots; strongly effervescent; moderately alkaline (pH 8.4); abrupt wavy boundary
2C4--117 to 150 cm; silt loam, grayish brown (2.5Y 5/2) dry, very dark grayish brown (2.5Y 3/2) moist; massive; hard, firm, slightly sticky and slightly plastic; thinly laminated; few very fine tubular pores; strongly effervescent; strongly alkaline (pH 8.7)
TYPE LOCATION: Grant County, Washington, about 11 km north of Warden; about 730 m north and 210 m east of the northwest corner of section 7, T. 18 N., R. 30 E., Willamette Meridian; latitude 47.0640253, longitude -119.1054656, datum WGS 84 (coordinates estimated from section, township, and range)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature at a depth of 50 cm--10 to 13 degrees C
Soil moisture--usually dry between depths of 10 and 30 cm
Depth to calcium carbonate--36 to 61 cm
Content of fine sand and coarser sand in particle-size control section--less than 15 percent
Ap horizon
Value--5 or 6 dry, 3 or 4 moist
Chroma--2 or 3 dry, 2 to 4 moist
Thickness--15 to 23 cm
Bw horizon
Hue--10YR, 2.5YR
Value--5 to 7 dry, 3 or 4 moist
Chroma--2 to 4 dry or moist
Reaction--6.6 to 8.4
Thickness--15 to 38 cm
2Bk horizon
Hue--10YR, 2.5Y
Value--5 to 7 dry, 3 or 4 moist
Texture--dominantly silt loam and very fine sandy loam, very thin strata of silt and very fine sand
Thickness--10 to 36 cm
2C horizon
Hue--10YR, 2.5Y
Value--5 to 7 dry, 3 or 4 moist
Chroma--2 or 3 dry or moist
Texture--dominantly silt loam or very fine sandy loam, very thin strata of silt or very fine sand
Reaction--7.9 to 9.0
Combined thickness--greater than 55 cm
COMPETING SERIES:
Bedground--100 to 150 cm (deep) to a lithic contact (basalt)
Shano--silt loam in particle-size control section; no stratification
Warden--no laminated sediment in particle-size control section
GEOGRAPHIC SETTING:
Elevation--120 to 400 m
Climate--arid; warm, dry summers; cool, moist winters
Mean annual precipitation--150 to 230 mm
Mean January air temperature--about -3 degrees C
Mean July air temperature--about 22 degrees C
Mean annual air temperature--about 10 to 12 degrees C
Frost-free season--135 to 200 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Shano--on uplands and hills; silt loam in particle-size control section
Warden--on uplands; no laminated sediment in particle-size control section
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high
USE AND VEGETATION:
Use--dominantly irrigated crop production; nonirrigated crop production and livestock grazing in a few areas
DISTRIBUTION AND EXTENT: Central Washington, Oregon, and southern Idaho; MLRA 7; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Franklin County, Washington; 1914
REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Cambic horizon--zone from 23 to 48 cm
*Particle-size control section--zone from 25 to 100 cm
National Cooperative Soil Survey
U.S.A.