LOCATION DUCKBOTTOM              SC

Established Series
CMO:CDG:JMR
04/2022

DUCKBOTTOM SERIES

MLRA(s): 133A-Southern Coastal Plain, 153A-Atlantic Coast Flatwoods, 153B-Tidewater Area
TAXONOMIC CLASS: Very-fine, kaolinitic, acid, thermic Fluvaquentic Endoaquepts
Depth Class: Very deep
Drainage Class (Agricultural): Poorly drained
Internal Free Water Occurrence: Very shallow, persistent
Flooding Frequency and Duration: Frequent or occasional for brief to very long periods
Ponding Frequency and Duration: None
Slowest Saturated Hydraulic Conductivity: Moderately low
Landscape: Lower to upper coastal plain river valley
Landform: Flood plain
Geomorphic Component: Flood-plain step
Parent Material: Alluvium
Slope: 0 to 2 percent
Elevation (type location): 120 feet (36 m)
Mean Annual Air Temperature (type location): 63 degrees F (17.1 C)
Mean Annual Precipitation (type location): 48 inches (1220 mm)

TAXONOMIC CLASS: Very-fine, kaolinitic, acid, thermic Fluvaquentic Endoaquepts

TYPICAL PEDON: Duckbottom clay, forested. (Colors are for moist soil.)

A--0 to 5 centimeters (about 0 to 2 inches); dark brown (7.5YR 3/2) clay; moderate medium granular structure; friable; many fine and medium roots; common fine and medium pores; very strongly acid; clear smooth boundary.

Bg1--5 to 10 centimeters (about 2 to 4 inches); light brownish gray (2.5Y 6/2) clay; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; few fine roots; common fine pores; strongly acid; gradual wavy boundary. (Combined thickness of Bg horizon is 40 to more than 60 inches.)

Bg2--10 to 50 centimeters (about 4 to 20 inches); gray (2.5Y 6/1) clay; weak medium subangular blocky structure; firm; moderately sticky, moderately plastic; few fine roots; common medium prominent strong brown (7.5YR 5/6) and common coarse distinct light yellowish brown (2.5Y 6/4) masses of oxidized iron; strongly acid; gradual smooth boundary.

Bg3--50 to 94 centimeters (about 20 to 37 inches); gray (2.5Y 6/1) clay; weak medium subangular blocky structure; very firm; moderately sticky, moderately plastic; common medium prominent strong brown (7.5YR 5/8) and many medium distinct light yellowish brown (2.5Y 6/4) masses of oxidized iron; very strongly acid; gradual wavy boundary.

Bg4--94 to 122 centimeters (about 37 to 48 inches); gray (N 5/) clay; weak medium subangular blocky structure; very firm; moderately sticky, moderately plastic; many coarse prominent brownish yellow (10YR 6/6) and common coarse prominent yellowish red (5YR 5/8) masses of oxidized iron; very strongly acid; gradual wavy boundary.

Bg5--122 to 203 centimeters (about 48 to 80 inches); gray (N 5/) clay; weak medium subangular blocky structure; very firm; moderately sticky, moderately plastic; common medium prominent olive yellow (2.5Y 6/6) and reddish yellow (7.5YR 6/8) masses of oxidized; very strongly acid.

TYPE LOCATION: Sumter County, South Carolina; 3.4 miles northwest of State Highway 261 on Sumter Landing Road; about 0.4 miles south, 0.5 miles west, and 0.3 miles north on Riverton Road, and about 180 feet west of road. Rembert, South Carolina; USGS 7.5 Minute Quadrangle, NAD83. lat. 34 degrees, 01 minutes, 47.00 seconds N. and long. 80 degrees, 36 minutes, 03.00 seconds W.

RANGE IN CHARACTERISTICS:
Depth to Bedrock: Greater than 80 inches
Depth to Seasonal High Water Table: 0 to 12 inches, November to May
Rock Fragment content: 0 to 5 percent by volume
Soil Reaction: Extremely acid to moderately acid unless limed

RANGE OF INDIVIDUAL HORIZONS:
A horizon or Ap horizon (where present):
Color--hue of 7.5YR to 5Y, value of 2 to 6, chroma of 1 to 6, or is neutral with value of 2 to 7
Texture (fine-earth fraction)--loam, silt loam, silty clay loam, silty clay, clay loam, or clay
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

Bg horizon:
Color--hue of 10YR to 10B, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--silty clay loam, clay loam, silty clay, or clay
Clay content: 60 percent or more in the control section
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

Cg horizon (where present):
Color--hue of 10YR to 10B, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--sandy clay loam, silty clay loam, clay loam, silty clay, or clay
Clay content: 27 percent or more
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

2Cg horizon:
Color--hue of 10YR to 10B, value of 4 to 7, chroma of 1 or 2, or is neutral with value of 4 to 7
Texture (fine-earth fraction)--variable, ranging from sandy to clayey material
Redoximorphic features (where present)--masses of oxidized iron in shades of red, yellow, or brown and iron depletions in shades of brown, yellow, olive, or gray

COMPETING SERIES:
No known series in same family.

GEOGRAPHIC SETTING:
Landscape: Coastal Plain river valley
Landform: Flood plain
Geomorphic Component: Flood-plain step
Parent Material: Alluvium
Elevation: 3 to 50 meters (about 10 to 165 feet)
Annual Temperature: 14 to 21 degrees C (57 to 70 degrees F)
Annual Precipitation: 1040 to 1400 mm ( about 41 to 55 inches)
Frost Free Period: 202 to 253 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Chastain soils--have mixed mineralogy
Chenneby soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Chewacla soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Mullers soils--have dominant choma of more than 2 immediately below the surface and dominant chroma of 2 or less in the upper 20 inches of the soil
Riverview soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Shellbluff soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Tawcaw soils--have dominant chroma of more than 2 in the upper 20 inches of the soil
Wehadkee soils--have less than 35 percent clay

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Poorly drained
Internal Free Water Occurrence: Very shallow, persistent
Flooding Frequency and Duration: Frequent or occasional for brief to very long periods Ponding Frequency and Duration: None
Index Surface Runoff: Negligible
Saturated Hydraulic Conductivity: Moderately low (0.1 to 1.4 micrometers per second) in the upper part and moderately low to very high (0.1 to 705 micrometers per second) in the lower part)
Permeability: Slow

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Raleigh, North Carolina.

USE AND VEGETATION:
Major Uses:
Dominant Vegetation: Where cultivated--pasture. Where woodedtupelo, cypress, green ash, cottonwood, sweetgum, water oak, willow oak, and cherry-bark oak.

DISTRIBUTION AND EXTENT:
Distribution: South Carolina
Extent: Small

SERIES PROPOSED: Sumter County, South Carolina; 2008. Established with this correlation.

REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon--the zone from the surface of the soil to 2 inches (A horizon)
Cambic horizon-the zone from 2 inches to a depth of 80 inches
Aquic conditions--the zone from 0 inches to a depth of 80 inches is periodically saturated (endosaturation)

ADDITIONAL DATA:
Laboratory Data: Characterization/Reference data are available from NRCS-Soil Survey Laboratory, Lincoln, NE.: User Pedon ID (08SC085017 and 08SC085022) or Lab Pedon Number (08N0438 and 08N0431) are representative of the Duckbottom Series.

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National Cooperative Soil Survey
U.S.A.