LOCATION ELD                     WA

Established Series
Rev. RFP/DRU/EED
01/2020

ELD SERIES

Landscape--river valleys
Landform--alluvial terraces, flood plains
Slope--0 to 12 percent
Parent material--alluvium
Mean annual precipitation--about 1300 mm
Mean annual air temperature--about 10 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--xeric
Soil temperature regime--mesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Cumulic Ultic Haploxerolls

TYPICAL PEDON: Eld loam in an area of pasture

Ap--0 to 18 cm; loam, yellowish red (5YR 4/6) dry, dark reddish brown (5YR 3/3) moist; strong fine granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many fine and very fine roots; common very fine and fine tubular pores; moderately acid (pH 6.0); abrupt smooth boundary

AB--18 to 56 cm; loam, yellowish red (5YR 5/6) dry, dark reddish brown (5YR 3/3) moist; moderate very fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine roots; few medium and common very fine and fine tubular pores; moderately acid (pH 5.8); gradual wavy boundary

Bw1--56 to 89 cm; silt loam, strong brown (7.5YR 5/6) dry, dark brown (7.5YR 3/4) moist; moderate fine subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few very fine roots; common very fine and fine tubular pores; moderately acid (pH 5.8); gradual wavy boundary

Bw2--89 to 150 cm; silt loam, strong brown (7.5YR 5/6) dry, brown (7.5YR 4/4) moist; moderate medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and fine tubular pores; moderately acid (pH 5.6)

TYPE LOCATION: Thurston County, Washington, about 2.5 km northeast of Littlerock; aoubt 770 m north and 225 m east of southwest corner of section 35, T. 17 N., R. 3 W., Willamette Meridian; Little Rock, Washington, U.S. Geological Survey quadrangle; latitude 46.9160140 degrees north and longitude 123.0313790 degrees west;, WGS 84 (coordinates estimated from PLSS details)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--8 to 13 degrees C
Soil moisture control section--dry 45 to 75 days following summer solstice
Thickness of mollic epipedon--50 to 75 cm
Depth to ultic feature (base saturation (sum) of 75 percent or less)--25 to 75 cm
Total rock fragment content--0 to 15 percent gravel
Particle-size control section--18 to 35 percent clay (weighted average); more than 15 percent sand (weighted average)

Ap horizon
Hue--5YR, 7.5YR, 10YR
Value--2 to 3 moist, 3 to 5 dry
Chroma--2 or 3 moist, 2 to 6 dry
Fine-earth texture--loam, silt loam, silty clay loam
Reaction (pH)--5.1 to 6.5
Thickness--15 to 50 cm

AB horizon
Hue--5YR, 7.5YR, 10YR
Value--3 to 5 dry
Chroma--4 to 6 dry
Fine-earth texture--silt loam, loam, silty clay loam
Reaction (pH)--5.1 to 6.5
Thickness--20 to 50 cm

Bw1 horizon
Hue--5YR, 7.5YR, 10YR
Value--3 or 4 moist, 3 to 6 dry
Chroma--3 or 4 moist, 4 to 6 dry
Fine-earth texture--silt loam, loam, clay loam
Reaction (pH)--5.6 to 6.5
Thickness--15 to 55 cm

Bw2 and Bw3 horizons (where present)
Hue--5YR, 7.5YR, 10YR
Value--3 or 4 moist, 3 to 6 dry
Chroma--3 or 4 moist, 4 to 6 dry
Fine-earth texture--silt loam, loam, clay loam, silty clay loam, fine sandy loam
Reaction (pH)--5.6 to 7.3

COMPETING SERIES:
Alsea--aquic conditions at a depth of 75 to 100 cm
Chapman--hue of 10YR or 7.5YR throughout; as much as 50 percent total silt in particle-size control section; 20 to 50 percent rock fragments in part of C horizon within a depth of 150 cm
McDoug--aquic conditions at a depth of 75 to 100 cm; frost-free period of 130 to 150 days
Nook--aquic conditions at a depth of 50 to 100 cm; dry 75 to 90 days following summer solstice in moisture control section

GEOGRAPHIC SETTING:
Elevation--5 to 75 m
Mean annual precipitation--1100 to 1800 mm
Mean annual air temperature--10 to 12 degrees C
Frost-free period--150 to 200 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Grove--more than 35 percent rock fragments throughout particle-size control section; on adjacent outwash terraces and drift plains
Delphi--100 to 150 cm (deep) to densic contact; on adjacent upslope glacially modified hills and uplands
Olympic, Raught--more than 35 percent clay in particle-size control section; on adjacent upslope foothills and mountain slopes
Boistfort--andic soil properties; on adjacent upslope foothills and mountain slopes
Scatter--less than 18 percent clay in particle-size control section; on convex natural levees and alluvial terraces
Elma--10 percent clay or less in lower part of particle-size control section; on convex natural levees and alluvial terraces
Chehalis--less than 15 percent silt in particle-size control section; on similar landforms
Maytown--aquic conditions at a depth of 50 to 75 cm; in concave to linear positions of flood plains
Rennie, Godfrey--aquic conditions within 30 cm of the soil surface; in oxbows, backswamps, or concave depressions of flood plains

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Flooding--rare or occasional, brief periods in November through March
Saturated hydraulic conductivity (Ksat)--moderately high or high throughout

USE AND VEGETATION:
Use--hay production, livestock grazing, and crop production in cleared areas; wildlife habitat
Native vegetation--Douglas-fir, western redcedar, red alder, black cottonwood, bigleaf maple, vine maple, beaked hazelnut, salal, Cascade Oregon grape, Indian plum, rose, salmonberry, red elderberry, common snowberry, trailing blackberry, western swordfern, brackenfern

DISTRIBUTION AND EXTENT: Western Washington; MLRA 2; small extent

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

SERIES ESTABLISHED: Reconnaissance of the western part of the Puget Sound Basin, Washington; 1910

REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 25 to 100 cm
*Mollic epipedon--zone from the surface to a depth of 56 cm
*Cambic horizon--zone from 56 to 150 cm

10/2016--The Eld official series description was edited according to SSR01 Technical Note--Content and Format of Official Series Descriptions (revised 12/2015). Further field investigation of the flood plains in MLRA 2 is recommended to determine distribution.

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National Cooperative Soil Survey
U.S.A.