LOCATION DEWEYVILLE TX

Established Series
CLN-JKW-RM
07/2014

DEWEYVILLE SERIES

The Deweyville series consists of very deep, very poorly drained, very slowly permeable soils formed in recent alluvium enriched with acid organic materials. These nearly level soils occur in oxbows and poorly defined drainageways. Slope ranges from 0 to 1 percent but are mainly less than 0.5 percent. Mean annual precipitation is about 1524 mm (60 in), and mean annual air temperature is about 20 degrees C (68 degrees F).

TAXONOMIC CLASS: Dysic, thermic Typic Haplohemists

TYPICAL PEDON: Deweyville mucky silt loam, in forest. (Colors are for moist soil unless otherwise stated.)

Oi--0 to 10 cm (0 to 4 in); very dark grayish brown (10YR 3/2) broken face, mucky silt loam, very dark grayish brown (10YR 3/2) rubbed, massive; very friable, slightly sticky and nonplastic; many medium and large roots; 78 percent mineral material; about 20 percent fiber unrubbed, 8 percent fiber rubbed; fibers are 1 to 10 mm in size; extremely acid; (pH 3.8 in 0.01 M calcium chloride) gradual smooth boundary. (0 to 25 cm [0 to 10 in] thick)

Oe--10 to 91 cm (4 to 36 in); dark brown (7.5YR 3/2) broken face, hemic material, dark brown (7.5YR 3/2) rubbed, about 52 percent fiber unrubbed, 24 percent fiber rubbed; fibers are 1 mm to 5 cm in size; massive; common medium and large roots; about 40 percent mineral material; extremely acid; (pH 4.0 in 0.01 M calcium chloride) diffuse smooth boundary. (25 to 127 cm [10 to 50 in] thick)

Oa--91 to 203 cm (36 to 80 in); dark brown (7.5YR 3/2) broken face, sapric material, dark brown (7.5YR 3/2) rubbed, about 20 percent fiber unrubbed, 5 percent rubbed; fibers are 1 mm to 5 cm in size; massive; estimated 30 percent mineral material; extremely acid. (pH 4.0 in 0.01 M calcium chloride)

TYPE LOCATION: Newton County, Texas; from the intersection of Farm Road 82 and Texas Highway 87 (which is about 5.5 miles east of Kirbyville, Texas), 4.0 miles south on Texas Highway 87, 2.0 miles southeast on Farm Road 2829, 2.6 miles south on county road, 0.9 miles northeast along forest road, 150 ft north in forest, site is about 2,500 feet west of Sabine River. USGS topographic quadrangle: Bancroft; Latitude: 30 degrees, 31 minutes, 43.3 seconds N; Longitude: 93 degrees, 44 minutes, 18.0 seconds W; Datum: WGS84.

RANGE IN CHARACTERISTICS:
Soil Moisture: An aquic soil moisture regime.
Mean annual soil temperature: 20.6 to 21.7 degrees C (69 to 71 degrees
Thickness of organic material: 130 to 203 cm (51 to 80 in)
Reaction: 3.7 to 4.5 in 0.01M calcium chloride in all horizons

Oi Horizon
Hue: 7.5YR to N
Value: 2 or 3
Chroma: 1 or 2
Texture: mucky silt loam, mucky silty clay loam, or mucky clay loam
Fiber content: 15 to 60 percent; 5 to 20 percent rubbed
Mineral content: 50 to 80 percent, and is mostly silt or clay

Oe Horizon
Hue: 5YR to 10YR
Value: 2 or 3
Chroma: 1 to 3
Fiber content: 40 to 70 percent; 16 to 35 percent rubbed; size 1 mm to 8 cm, but includes decayed logs up to 20 cm in diameter
Mineral content: 25 to 50 percent, and is mostly silt or clay

Oe Horizon
Hue: 5YR to 10YR
Value: 2 or 3
Chroma: 1 to 3
Fiber content: 40 to 70 percent; 16 to 35 percent rubbed; size 1 mm to 8 cm, but includes decayed logs up to 20 cm in diameter
Mineral content: 25 to 50 percent, and is mostly silt or clay

Oa Horizon (where present)
Hue: 5YR to 10YR
Value: 2 or 3
Chroma: 1 to 3
Fiber content: 20 to 30 percent unrubbed; 5 to 16 percent rubbed

COMPETING SERIES: This is the Dasher series (GA) in the same family. Similar soils are the Dare (NC), Dorovan (MS), Maurepas (LA), and Pungo (NC) series.

Dasher soils: contain about 2 to 5 percent mineral material in the soil profile and have fewer decomposed logs, fragments of logs, and woody plant roots in the profile.
Dare, Dorovan, Maurepas, and Pungo soils: dominated by sapric material within the control section, in addition, Maurepas soils are less acid.

GEOGRAPHIC SETTING:
Parent material: high organic matter loamy alluvium derived from igneous, metamorphic and sedimentary rock
Landscape: river valleys
Landform: swamps
Slope: 0 to 1 percent but are mainly less than 0.5 percent
Mean annual precipitation: 1321 to 1524 mm (52 to 60 in)
Precipitation Pattern: Rainfall is generally uniform throughout the year with slight peaks in the spring and fall months.
Mean annual air temperature: 19.5 to 20.6 degrees C (67 to 69 degrees F)
Frost-free period: 240 to 300 days
Elevation: 3 to 29 m (10 to 95 ft)

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bleakwood, Cowmarsh, Simelake, and Pluck series.
Bleakwood and Pluck soils: better drained; on a higher landform
Cowmarsh soils: do not have a thickened organic layer at the surface; similar landform
Simelake soils: better drained; clayey throughout; on higher landform

DRAINAGE AND PERMEABILITY: very poorly drained. Permeability is very slow. Runoff is negligible. Frequently flooded for very long duration throughout the year. The soil is frequently ponded throughout the year. Ponding occurs after floodwaters have receded which leave water in these depressional areas.

USE AND VEGETATION: Most of the areas are undeveloped and used for wildlife habitat. Vegetation consists of mixed hardwood forests with the dominant trees being swamp tupelo, water tupelo, blackgum, baldcypress, sweetbay, and other hydrophytic species.

DISTRIBUTION AND EXTENT: Lower coastal plains of southeast Texas; Land Resource Region T; MLRA 152B; the series is of minor extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Temple, Texas

SERIES ESTABLISHED: Newton County, Texas; 1980.

REMARKS: National Soil Survey Laboratory S77TX-351-4 (77T 7727 & 77T 7728).

Lincoln Lab determined pH of A horizon in 0.01m calcium chloride to be 4.0. The pH of Oe horizon in 0.01m calcium chloride is 3.7.

Field Determination of pH by glass electrode of
A horizon in 0.01m calcium chloride is 3.8. The pH of the Oe horizon in 0.01m calcium chloride is 4.0. The pH of the Oe horizon in 0.01m calcium chloride is 4.0.

Field determination of pH by Hellige-Truog of A horizon is 4.8, Oe horizon is 4.8 and Oe horizon is 4.8.

ADDITIONAL DATA: None

Taxonomic Version: Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.