LOCATION ENOCHVILLE              ID

Established Series
Rev. FRK/RAS/CLM/GHL
04/2015

ENOCHVILLE SERIES

The Enochville series consists of very deep, poorly drained soils formed in alluvium. Enochville soils are found on slopes of 0 to 4 percent on floodplains and terraces. The mean annual precipitation is about 450 millimeters and the mean annual temperature is about 5 degrees C.

TAXONOMIC CLASS: Fine-silty, mixed, superactive Cumulic Cryaquolls

TYPICAL PEDON: Enochville silt loam, in rangeland at an elevation of 1,971 meters. (Colors are for dry soil unless otherwise noted.)

A1--0 to 18 cm; dark gray (10YR 4/1) silt loam, black (10YR 2/1) moist; strong medium and fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; common fine and medium roots; many very fine interstitial pores; few medium distinct brown (10YR 5/3) iron concentrations in matrix; slightly acid (pH 6.5); gradual smooth boundary

A2--18 to 33 cm; dark gray (10YR 4/1) silty clay loam, black (10YR 2/1) moist; moderate medium and coarse granular structure; very hard, friable, moderately sticky and moderately plastic; common fine and medium roots; many very fine and few fine and medium tubular pores; few fine distinct brown (10YR 5/3) iron concentrations in matrix; neutral (pH 6.6); gradual smooth boundary

Bg1--33 to 64 cm; dark grayish brown (10YR 4/2) silty clay loam, very dark brown (10YR 2/2) moist; weak medium and fine subangular blocky structure parting to weak medium and coarse granular; very hard, firm, moderately sticky and moderately plastic; common fine and medium roots; many very fine and fine, few medium and coarse tubular pores; common medium faint brown (10YR 5/3) iron concentrations and few fine distinct very dark gray (10YR 3/1) iron depletions in matrix; neutral (pH 6.7); gradual smooth boundary

Bg2--64 to 104 cm; dark grayish brown (10YR 4/2) silty clay loam, grayish brown (10YR 5/2) crushed, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure parting to weak medium and coarse granular; very hard, firm, moderately sticky and moderately plastic; few fine and medium roots; many very fine, few fine and medium tubular pores; common medium faint brown (10YR 5/3) iron concentrations and few fine distinct very dark gray (10YR 3/1) iron depletions in matrix; neutral (pH 6.9); gradual smooth boundary

Bg3--104 to 135 cm; grayish brown (2.5Y 5/2) silty clay loam, light brownish gray (10YR 6/2) crushed, dark grayish brown (2.5Y 4/2) moist; weak medium and fine subangular blocky structure; very hard, firm, moderately sticky and moderately plastic; few fine and medium roots; many very fine and fine, few medium, and coarse tubular pores; many medium distinct yellowish brown (10YR 5/4) iron concentrations in matrix; neutral (pH 7.0); gradual smooth boundary

2Cg--135 to 150 cm; yellowish brown (10YR 5/4) gravelly sandy clay loam, brown (10YR 4/3) moist; massive; hard, friable, slightly sticky and slightly plastic; few fine and medium roots; many very fine and fine tubular pores; many medium distinct strong brown (7.5YR 5/6) iron concentrations and few fine grayish brown (10YR 5/2) and light gray (2.5Y 7/2) iron depletions in matrix; neutral (pH 7.0)

TYPE LOCATION: Bingham County, Idaho; about 16 kilometers southeast of Bone, Idaho; 579 meters east and 67 meters south of the northwest corner of section 9, T. 3 S., R. 40 E.; USGS Poison Creek, Idaho topographic quadrangle; 43.17852 degrees north latitude and 111.77979 degrees west latitude, WGS 84; UTM 436623 meters east, 4780936 meters north, zone 12N

RANGE IN CHARACTERISTICS:
Thickness of mollic epipedon - 50 to 115 cm
Particle-size control section - 20 to 35 percent clay
Mean annual soil temperature - 1.5 to 6 degrees C

A horizons
Hue - 10YR or 2.5Y
Value - 3 to 5 dry, 1 or 2 moist
Chroma - 0 to 2 dry or moist
Texture - Silt loam, silty clay loam
Reaction (pH) - 6.1 to 7.3
Thickness - 26 to 50 cm

Bg horizons
Hue - 10YR to 5Y
Value - 3 to 6 dry, 1 or 2 moist
Chroma - 0 to 2 dry or moist
Texture - Silt loam, silty clay loam
Reaction (pH) - 6.6 to 7.8
Thickness - 50 to 120 cm

2Cg horizon
Hue - 10YR to 5Y
Value - 5 or 6 dry, 4 or 5 moist
Chroma - 1 to 4 dry or moist
Texture - Sandy clay loam, loam
Rock fragments - 5 to 30 percent
Reaction (pH) - 6.6 to 7.8

COMPETING SERIES:
Klamath - Mean annual soil temperature of 6.7 to 8.0 degrees C, ashy textural modifier criteria met in lower part of profile

GEOGRAPHIC SETTING:
Landscape - Valleys
Landform - Floodplains, terraces
Elevation - 1,770 to 2,290 meters
Slope - 0 to 4 percent
Parent material - Alluvium from loess, basalt, sedimentary lithologies
Mean annual precipitation - 330 to 635 mm
Mean annual temperature - 1 to 6 degrees C
Frost-free period - 50 to 70 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Chubbflat - Calcium carbonate accumulation beginning at 20 to 60 cm, similar landforms slightly higher positions
Foxcreek - Fine-loamy over sandy or sandy skeletal, similar landforms
Furniss - Fine-loamy, similar landforms
Lanark - Argillic horizon, slopes above the valley bottom
Outlet - Calcium carbonate accumulation at less than 50 cm, similar landforms
Robin - Argillic horizon, slopes above the valley bottom

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: (Ksat)
Drainage - Poorly drained
Ksat - Moderately high
Seasonal water table - March to June from about 28 to 61 cm
Flooding - Frequent brief flooding from February through June

USE AND VEGETATION:
Use - Livestock grazing, wildlife habitat
Potential natural vegetation - Basin wildrye, shrubby cinquefoil, silver sagebrush, sedges

DISTRIBUTION AND EXTENT: Eastern Idaho Plateaus, Idaho; MLRA 13; Central Rocky Mountains, Idaho; MLRA 43A; Moderate extent

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

SERIES ESTABLISHED: Bingham County, Idaho, 1972

REMARKS:
Mollic epipedon - 0 to 104 cm
Particle size control section - 25 to 100 cm
Moisture regime - Aquic

---

National Cooperative Soil Survey
U.S.A.