LOCATION TEALWHIT WA

Established Series
Rev. FRM/LJH/RJE
02/2011

TEALWHIT SERIES

The Tealwhit series consists of deep, poorly drained soils that formed in alluvium. These soils are on bottomlands and low terraces and have slopes of 0 to 8 percent. The mean annual precipitation is about 100 inches and the mean annual temperature is about 49 degrees F.

TAXONOMIC CLASS: Fine, isotic, acid, isomesic Vertic Endoaquepts

TYPICAL PEDON: Tealwhit silty clay loam, forested. (Colors are for moist soil unless otherwise noted. All textures are apparent field textures.)

Oi--0 to 3 inches; slightly decomposed leaves, needles, bark, and wood fragments.

Oe--3 to 5 inches; moderately decomposed leaves, needles, bark, and wood fragments.

A--5 to 9 inches; dark reddish brown (5YR 2.5/2) silty clay loam, reddish gray (5YR 5/2) dry; moderate medium and coarse granular structure; hard, friable, slightly sticky and moderately plastic; common fine and medium roots; few fine iron-manganese concretions; very strongly acid; clear wavy boundary. (2 to 6 inches thick)

AB--9 to 12 inches; very dark gray (5YR 3/1) and dark reddish brown (5YR 3/2) silty clay loam, gray (5YR 5/1) and reddish gray (5YR 5/2) dry; moderate fine and medium subangular blocky structure; hard, friable, moderately sticky and moderately plastic; common fine and medium roots; few fine soft iron-manganese concretions; strongly acid; clear wavy boundary. (0 to 4 inches thick)

Bg1--12 to 22 inches; grayish brown (2.5Y 5/2) and light olive brown (2.5Y 5/4) silty clay loam, light gray (2.5Y 7/2) and pale yellow (2.5Y 7/4) dry; common fine prominent yellowish red (5YR 4/6) redox concentrations; strong fine and very fine subangular blocky structure; hard, friable, moderately sticky and moderately plastic; common fine roots; some peds have dark reddish brown (5YR 2/2) organic coatings; strongly acid; clear wavy boundary. (5 to 14 inches thick)

Bg2--22 to 32 inches; light olive brown (2.5Y 5/4) and grayish brown (2.5Y 5/2) silty clay, pale yellow (2.5Y 7/4) and light gray (2.5Y 7/2) dry; moderate medium prismatic structure parting to moderate fine and medium subangular blocky; very hard, firm, very sticky and very plastic; common fine roots; strongly acid; gradual wavy boundary. (6 to 29 inches thick)

BCg1--32 to 47 inches; olive gray (5Y 5/2) silt clay loam, light gray (5Y 7/2) dry; common medium prominent yellowish red (5YR 5/6) and yellowish red (5YR 5/8) redox concentrations; weak coarse prismatic structure; hard, firm, moderately sticky and moderately plastic; few fine roots; strongly acid; clear wavy boundary. (0 to 15 inches thick)

2BCg--47 to 65 inches; gray (5Y 5/1) very fine sandy loam, light gray (5Y 7/1) dry; few fine and medium prominent strong brown (7.5YR 5/6) and strong brown (7.5YR 5/8) redox concentrations; massive; hard, firm, slightly sticky and slightly plastic; few fine roots; moderately acid.

TYPE LOCATION: Jefferson County, Washington; 2.1 miles west of U.S. 101 on Hoh Indian Reservation Road, 0.3 miles southwest on logging road; 50 feet east of road and about 60 feet north of Fletcher Creek in SE1/4 SW1/4 SW1/4 section 20, T.26N., R.13W.

RANGE IN CHARACTERISTICS: The particle size control section is 35 to 50 percent clay. The mean annual soil temperature is 47 to 52 degrees F. Base saturation by ammonium acetate is less than 50 percent throughout the profile.

The A horizon has hue of 5YR, 7.5YR, or 10YR, value of 2 or 3 moist, 4 or 5 dry, and chroma of 1 through 3. This horizon has granular or subangular blocky structure. It is strongly acid or very strongly acid.

The Bg horizon has hue of 10YR through 5Y, value of 3 through 6 moist, 6 or 7 dry, and chroma of 1 through 4. It has common or many, distinct or prominent redox concentrations. It is silty clay loam or silty clay. It has angular blocky, subangular blocky or prismatic structure. It is strongly acid or very strongly acid.

The BCg or 2BCg horizon have hue of 10YR through 5Y, value of 4 through 6 moist, 6 or 7 dry, and chroma of 1 through 3. It has few to many, distinct or prominent redox concentrations. It is very fine sandy loam to silty clay. It is moderately acid to very strongly acid.

COMPETING SERIES: This is the Nemah series. Nemah soils can have up to 25 percent coarse fragments and greater than 50 percent clay in the control section.

GEOGRAPHIC SETTING: Tealwhit soils are on bottomlands and low terraces at elevations of 20 to 1,200 feet. Slopes are 0 to 8 percent. They formed in alluvium. The climate is characterized by cool, moist summers and cool, wet winters. The mean annual precipitation is 80 to 140 inches. The average January temperature is about 38 degrees F.; the average July temperature is about 59 degrees F.; and the mean annual temperature is about 49 degrees F. The frost-free period is 160 to 200 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Aabab, Calawah, Klone, Kydaka, Ozette, Queets, Sekiu, and Snahopish soils. All of these soils except Kydaka and Sekiu soils lack an aquic moisture regime. Also, Aabab have less than 35 percent clay in the control section; Calawah and Queets soils are medial; Klone and Snahopish soils are medial, skeletal; and Ozette soils are medial and have a densic contact at depths of 40 to 60 inches. Kydaka soils are medial and moderately deep to a paralithic contact. Sekiu soils are very fine and kaolinitic.

DRAINAGE AND PERMEABILITY: Poorly drained; slow runoff; slow permeability.

USE AND VEGETATION: Timber production is the principal use. Native vegetation is predominantly western red cedar with some western hemlock, Sitka spruce and red alder. Understory species include salmonberry, salal, red huckleberry, western swordfern, deer fern, and ladyfern.

DISTRIBUTION AND EXTENT: Northwestern Washington; MLRA 1. This series is moderately extensive.

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

SERIES ESTABLISHED: Jefferson County, Washington, 1969.

REMARKS: Diagnostic horizons and other features are:

Ochric epipedon
Cambic horizon - 12 to 47 inches

This series meets additional subgroup criteria for Humic and Aeric.

All depths to diagnostic horizons or features are measured from the to of the first mineral horizon.

National Cooperative Soil Survey
U.S.A.