LOCATION OVINGTON                WA

Established Series
Rev. RGC/HJP/
02/2017

OVINGTON SERIES

Landscape--shore complexes
Landform--glacially modified hills, headlands
Slope--15 to 80 percent
Parent material--sedimentary colluvium and residuum
Mean annual precipitation--2200 mm
Mean annual air temperature--8.5 degrees C
Depth class--moderately deep to lithic contact
Drainage class--somewhat poorly drained
Soil moisture regime--udic
Soil temperature regime--isomesic
Soil moisture subclass--typic

TAXONOMIC CLASS: Medial-skeletal, ferrihydritic, isomesic Typic Udivitrands

TYPICAL PEDON: Ovington very gravelly medial silt loam on a forested, southeast-facing, 15-percent slope at an elevation of 130 m (When described on October 17, 1994, the soil was moist throughout.)

Oi--0 to 5 cm; slightly decomposed organic material; abrupt smooth boundary

A--5 to 13 cm; very gravelly medial silt loam, dark brown (10YR 3/3) dry, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; slightly hard, friable, nonsticky and nonplastic; weakly smeary; common very fine, fine, medium, and coarse roots; common very fine and fine tubular and irregular pores; 35 percent gravel and 5 percent cobbles; strongly acid (pH 5.5); clear smooth boundary

Bw1--13 to 25 cm; very gravelly medial silt loam, yellowish brown (10YR 5/4) dry, dark brown (10YR 3/3) moist; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; common very fine, fine, medium, and coarse roots; common very fine and fine tubular and irregular pores; 30 percent gravel and 15 percent cobbles; moderately acid (pH 5.6); clear wavy boundary

Bw2--25 to 43 cm; very cobbly medial loam, yellowish brown (10YR 5/4) dry, dark yellowish brown (10YR 3/4) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; common very fine, fine, medium, and coarse roots; common very fine and fine tubular and irregular pores; 20 percent gravel and 30 percent cobbles; moderately acid (pH 5.6); clear wavy boundary

Bw3--43 to 71 cm; very cobbly medial loam, light yellowish brown (10YR 6/4) dry, dark yellowish brown (10YR 3/6) moist; weak medium subangular blocky structure, slightly hard, friable, slightly sticky and slightly plastic; weakly smeary; few very fine, fine, and medium roots; few very fine and fine tubular and irregular pores; 20 percent gravel and 30 percent cobbles; moderately acid (pH 5.8); abrupt wavy boundary

R--71 cm; hard, fractured sedimentary rock

TYPE LOCATION: Clallam County, Washington, about 3 km south of the campground just west of Sappho; about 25 m west and 185 m north of the southeast corner of section 6, T. 29 N., R. 12 W., Willamette Meridian; latitude 48.041000 degrees north, longitude -124.286994 degrees west, WGS 84 (coordinates estimated from historical location description)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--9 to 10 degrees C
Depth to lithic contact--50 to 100 cm

Control section
*Total rock fragment content--35 to 75 percent
*Ammonium oxalate extractable aluminum plus one-half iron--2 to 5 percent
*Phosphate retention--85 to 100 percent
*Bulk density--0.70 to 0.90 g/cm3

Oi horizon
*Thickness--0 to 10 cm

A horizon
*Hue--10YR or 7.5YR moist or dry
*Value--3 to 5 dry
*Chroma--2 or 3 moist
*Total rock fragment content--35 to 60 percent
*Gravel content--25 to 60 percent
*Cobble content--0 to 15 percent
*Clay content--10 to 25 percent
*Reaction--5.1 to 6.0
*Organic matter content--5 to 10 percent
*Thickness--5 to 30 cm

Bw horizon
*Hue--10YR or 7.5YR moist or dry
*Value--3 or 4 moist, 5 or 6 dry
*Chroma--3, 4, or 6 moist
*Total rock fragment content--35 to 75 percent
*Gravel content--15 to 75 percent
*Cobble content--0 to 35 percent
*Clay content--15 to 25 percent
*Texture--silt loam, loam
*Organic matter content--1 to 7 percent
*Combined thickness--50 to 100 cm

COMPETING SERIES: None

GEOGRAPHIC SETTING:
Elevation--10 to 450 m
Climate--marine; cool, moist summers; cool, wet winters
Mean annual precipitation--1800 to 3300 mm
Mean annual air temperature--7 to 9 degrees C
Frost-free period--160 to 220 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Bonidu--densic contact 100 to 150 cm from the soil surface; on glacially modified hills and drift plains
Kickinghorse--lithic contact 100 to 150 cm from the soil surface; on glacially modified hills and drift plains
Klahowya--less than 35 percent coarse fragments in control section; aquic conditions within 100 cm of the soil surface; on glacially modified hills and drift plains
Willapa--aquic conditions 50 to 100 cm from the soil surface; on glacially modified hills and drift plains

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high

USE AND VEGETATION:
Use--wildlife habitat, recreation, timber production
Potential natural vegetation--western hemlock, Sitka spruce, Douglas-fir, western swordfern, Alaska huckleberry, red huckleberry, threeleaf foamflower, Oregon oxalis, deer fern

DISTRIBUTION AND EXTENT: Clallam County, Washington; MLRA 4A; small extent

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon

SERIES ESTABLISHED: Olympic National Forest, Clallam County, Washington; 2000

REMARKS:
Diagnostic horizons and other features in this pedon
*Ochric epipedon
*Cambic horizon--zone from 13 to 71 cm
*Andic soil properties--zone from 5 to 71 cm
*Depth to lithic contact--71 cm
*Particle-size control section--zone from 5 to 71 cm

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National Cooperative Soil Survey
U.S.A.