LOCATION ENON NC+AL GA SC VA
Established Series
Rev. AG;DTA
09/2025
ENON SERIES
MLRA(s): 136 (thermic part)
Soil Survey Regional Office (SSRO) Responsible: Southeast
Depth Class: Very deep
Agricultural Drainage Class: Well drained
Index Surface Runoff: Very high
Saturated Hydraulic Conductivity Class: Low
Shrink-Swell Potential: High
Landscape: Piedmont uplands
Landform: Interstream divides, ridges, and side slopes
Parent Material: Residuum weathered from mafic or intermediate igneous and high-grade metamorphic rocks such as diorite, gabbro, diabase, or hornblende gneiss or schist.
Slope: 2 to 45 percent
Mean Annual Air Temperature (type location): 16 degrees C (60 degrees F)
Mean Annual Precipitation (type location): 1143 millimeters (45 inches)
TAXONOMIC CLASS: Fine, mixed, active, thermic Ultic Hapludalfs
TYPICAL PEDON: Enon fine sandy loam--forested. (Colors are for moist soil unless otherwise stated.)
A--0 to 8 centimeters (0 to 3 inches); dark grayish brown (10YR 4/2) fine sandy loam; weak medium granular structure; very friable; many fine and medium roots; few medium fragments of quartz and black concretions; strongly acid; clear smooth boundary. (2 to 9 inches thick)
E--8 to 20 centimeters (3 to 8 inches); yellowish brown (10YR 5/4) fine sandy loam; weak medium granular structure; very friable; many fine and medium roots and root channels; few medium black concretions; moderately acid; clear wavy boundary. (0 to 18 centimeters (0 to 7 inches) thick)
BE--20 to 28 centimeters (8 to 11 inches); light olive brown (2.5Y 5/4) sandy clay loam; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; few distinct clay films on faces of peds; few fine roots and root channels; slightly acid; gradual wavy boundary. (0 to 13 centimeters (0 to 5 inches) thick)
Bt1--28 to 53 centimeters (11 to 21 inches); yellowish brown (10YR 5/8) clay; moderate, medium, prismatic structure that parts to moderate medium angular blocky structure; firm, sticky, plastic; many distinct clay films on faces of peds; few fine and medium roots between peds; few fine pores and root channels; common fine and medium black concretions; slightly acid; gradual wavy boundary.
Bt2--53 to 84 centimeters (21 to 33 inches); yellowish brown (10YR 5/8) clay; moderate medium angular blocky structure; firm, very sticky, plastic; few fine roots and pores; many distinct clay films on faces of peds; many medium black concretions; few medium gravel; neutral; gradual wavy boundary. (Combined thickness of the Bt ranges from 25 to 114 centimeters (10 to 45 inches.)
C--84 to 190 centimeters (33 to 75 inches); mottled brownish yellow (10YR 6/8), black 10YR 2/1), and dark greenish gray (5GY 4/1) loam saprolite; massive; friable; neutral.
TYPE LOCATION: Guilford County, North Carolina, one mile southwest of Greensboro, North Carolina on US Highway 29/70 to Secondary Road 1662, 25 feet north of Secondary Road 1662 and 450 feet east of Secondary Road 1387. Guilford, North Carolina USGS topographic quadrangle.
Latitude--36.028
Longitude-- -79.886
Datum--WGS84
RANGE IN CHARACTERISTICS:
Solum Thickness: 51 to 127 centimeters (20 to 50 inches)
Depth to Bedrock: Greater than 152 centimeters (60 inches)
Depth to Seasonal High Water Table: Greater than 152 centimeters (60 inches)
Rock Fragment Content: 0 to 60 percent, by volume, in the A, Ap, and E horizons and from 0 to 15 percent, by volume, in the lower horizons. Black manganese concretions range from few to common in some horizons of most pedons.
Soil Reaction: Strongly acid to slightly acid in the A, E, BA, BE, and Bt horizons and strongly acid to moderately alkaline in the BC, CB, and C horizons
RANGE OF INDIVIDUAL HORIZONS:
A or Ap horizon:
Color--hue of 7.5YR to 2.5Y, value of 3 to 5, chroma of 2 to 4
Texture (fine-earth fraction)--sandy loam, fine sandy loam, loam, or silt loam. Where eroded, texture is clay loam silty clay loam, or sandy clay loam.
E horizon (if it occurs):
Color--hue of 10YR or 2.5Y, value of 4 to 6, chroma of 2 to 4
Texture (fine-earth fraction)--sandy loam, fine sandy loam, or loam
BA or BE horizon (if it occurs):
Color--hue of 7.5YR to 2.5Y, value of 4 to 6, chroma of 3 to 8
Texture--loam, clay loam, silty clay loam, or sandy clay loam
Bt horizon:
Color--hue of 7.5YR to 2.5Y, value of 4 to 6, chroma of 4 to 8
Texture-- clay or clay loam
Redoximorphic features--Mottles of high and/or low chroma are in lower Bt horizons of some pedons
Slickensides--may be present in some subhorizons
BC or CB horizon (if it occurs):
Color--hue of 7.5YR to 5Y, value of 4 to 6, chroma of 3 to 8
Texture--sandy clay loam, clay loam, silty clay loam, silt loam, or loam
Redoximorphic features--typically has few to many mottles in shades of brown or yellow. In some pedons, this horizon lacks a dominant color and is mottled in shades of brown or yellow.
C horizon:
Color--hue of 7.5YR to 5Y, value of 4 to 6, chroma of 3 to 8 or are mottled in these in these colors
Texture--loamy saprolite
COMPETING SERIES:
Gundy soils--are redder and formed in the Carolina Slate Belt
Mecklenburg soils--are redder
Skyuka soils--formed on stream terraces and have a moderate shrink-swell
GEOGRAPHIC SETTING:
Landscape: Piedmont upland
Landform: Interstream divides, ridges, and side slopes
Parent Material: Residuum weathered from mafic or intermediate, igneous or high-grade metamorphic rocks such as diorite, diabase, gabbro, or hornblende gneiss or schist
Mean Annual Air Temperature: 14 to 19 degrees C (58 to 66 degrees F)
Mean Annual Precipitation: 940 to 1524 millimeters (37 to 60 inches)
Frost-free Period: 180 to 225 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Armenia soils--have a seasonal high water table at 15 to 46 centimeters (6 to 18 inches) and occur in flood plains or depressions in uplands
Brewback soils--have a seasonal high water table at 15 to 76 centimeters (6 to 30 inches) and have a depth to bedrock of 51 to 102 centimeters (20 to 40 inches)
Coronaca soils--have rhodic colors
Cullen soils--are redder and lack a high base saturation
Davidson soils--have rhodic colors and lack a high base saturation
Frogsboro soils--have a seasonally high water table at 30 to 46 centimeters (12 to 18 inches)
Gaston soils--have rhodic colors and lack a high base saturation
Iredell soils--have a seasonal high water table at 30 to 61 centimeters (12 to 24 inches)
Lloyd soils--have rhodic colors and lack a high base saturation
Poindexter--have a loamy subsoil and have a depth to bedrock of 51 to 102 centimeters (20 to 40 inches)
Sedgefield soils--have a seasonal high water table at 30 to 46 centimeters (12 to 18 inches)
Virgilina soils--have a seasonal high water table at 30 to 61 centimeters (12 to 24 inches)
Wilkes soils--have a depth to bedrock of 25 to 51 centimeters (10 to 20 inches))
Winnsboro soils--have a depth to bedrock of 102 to 152 centimeters (40 to 60 inches)
Wynott soils--have a depth to bedrock of 51 to 102 centimeters (20 to 40 inches)
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Agricultural Drainage Class: Well drained
Index Surface Runoff: High
Saturated Hydraulic Conductivity Class: Moderately low
USE AND VEGETATION:
Major Uses: Woodland and a few areas of cropland, pasture, or idle land
Dominant Vegetation: Where wooded-- shortleaf, loblolly, and Virginia pine, eastern redcedar, white oak, northern and southern red oak, hickory, yellow-poplar, sweetgum, blackgum, dogwood, and holly.
Where cultivated-- hay, corn, soybeans, and small grain.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Auburn, Alabama
DISTRIBUTION AND EXTENT:
Distribution: Georgia, North Carolina, South Carolina, and Virginia
Extent: Moderate
SERIES ESTABLISHED: Greene County, Georgia; 1939.
REMARKS:
The May 2006 revision was to clean up text only. No major revisions. (RHB)
The April 2022 revision removed an offensive series name replaced with Hallsummit (RBT). The September 2025 revision changed the format. No data was changed.
Diagnostic horizons and soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from 0 to 20 centimeters (0 to 8 inches) (A and E horizons)
Argillic horizon--the zone from 20 to 84 centimeters (8 and 33 inches) (Bt1 and Bt2 horizons)
Ultic feature--the base saturation of 35 to 60 percent at a depth 1.25 m below the top of the argillic horizon.
ADDITIONAL DATA:
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
NC0030 ENON 2-45 58-66 180-225 37-60 300-900
NC0138 ENON 2-45 58-66 180-225 37-60 300-900
NC0175 ENON 2-45 58-66 180-225 37-60 300-900
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
NC0030 NONE >6.0 - >60
NC0138 NONE >6.0 - >60
NC0175 NONE >6.0 - >60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
NC0030 0-8 SL FSL 0-5 80-100 5-20 3-15
NC0030 0-8 L SIL 0-5 90-100 7-27 4-20
NC0030 0-8 CL SCL 0-5 80-100 20-35 10-25
NC0030 8-11 CL SCL 0-5 80-100 20-35 10-20
NC0030 11-33 CL C 0-5 80-100 35-60 15-35
NC0030 33-75 VAR - - - -
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
NC0138 0-8 ST-L ST-SL ST-FSL 10-25 55-90 5-20 3-15
NC0138 0-8 STV-L STV-SL STV-FSL 25-50 35-75 5-20 3-15
NC0138 0-8 STV-CL CBV-CL 25-50 35-75 27-35 10-25
NC0138 8-11 SCL CL 5-10 80-100 20-35 10-20
NC0138 11-33 C CL 0-10 80-100 35-60 15-35
NC0138 33-75 VAR - - - -
NC0175 0-8 GR-FSL GR-SL GR-L 2-10 55-90 5-20 3-15
NC0175 0-8 GR-CL GR-SCL 2-10 65-85 20-35 10-25
NC0175 0-8 CB-FSL CB-SL CB-L 15-35 55-90 5-20 3-15
NC0175 8-11 SCL CL GR-SCL 0-10 60-100 20-35 10-20
NC0175 11-33 C CL 0-5 80-100 35-60 15-35
NC0175 33-75 VAR - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll
NC0030 0-8 5.1-6.5 .5-2. 0-0 2.0-6.0 LOW
NC0030 0-8 5.1-6.5 .5-2. 0-0 0.6-2.0 LOW
NC0030 0-8 5.1-6.5 .5-1. 0-0 0.6-2.0 LOW
NC0030 8-11 5.1-6.5 0.-.5 0-0 0.6-2.0 LOW
NC0030 11-33 5.1-7.8 0.-.5 0-0 0.06-0.2 HIGH
NC0030 33-75 - - - -
NC0138 0-8 5.1-6.5 .5-2. 0-0 2.0-6.0 LOW
NC0138 0-8 5.1-6.5 .5-2. 0-0 2.0-6.0 LOW
NC0138 0-8 5.1-6.5 .5-2. 0-0 0.6-2.0 LOW
NC0138 8-11 5.1-6.5 .5-1. 0-0 0.6-2.0 LOW
NC0138 11-33 5.1-7.8 0.-.5 0-0 0.06-0.2 HIGH
NC0138 33-75 - 0.-.5 - -
NC0175 0-8 5.1-6.5 .5-2. 0-0 2.0-6.0 LOW
NC0175 0-8 5.1-6.5 .5-2. 0-0 0.6-2.0 LOW
NC0175 0-8 5.1-6.5 .5-2. 0-0 2.0-6.0 LOW
NC0175 8-11 5.1-6.5 .5-1. 0-0 0.6-2.0 LOW
NC0175 11-33 5.1-7.8 0.-.5 0-0 0.06-0.2 HIGH
NC0175 33-75 - 0.-.5 - -
_______________________________________
National Cooperative Soil Survey
U.S.A.