LOCATION BONHIGH                 WY

Tentative Series
TIK-DPG-DEW
04/2025

BONHIGH SERIES

Depth class: Moderately deep
Drainage class: Well drained
Saturated hydraulic conductivity class: Very high
Parent material: Slope alluvium or colluvium over residuum weathered from sandstone and shale
Geomorphic location: Cuestas, escarpments, hillslopes, fan remnants, dip slopes, scarp slopes, basin-floor remnants, and structural benches
Slope range: 1 to 45 percent
Mean annual temperature:4 degrees C (39 degrees F)
Mean annual precipitation: 280 millimeters (11 inches)

TAXONOMIC CLASS:
Fine-loamy, mixed, superactive, frigid Aridic Haplustalfs

TYPICAL PEDON: Bonhigh sandy loam in rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 6 centimeters; dark yellowish brown (10YR 4/4) sandy loam, brown (10YR 4/3) moist; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; common fine and many very fine roots throughout; common interstitial pores; 10 percent gravel; slightly alkaline (pH 7.4); clear smooth boundary.

Bt--6 to 24 centimeters; yellowish brown (10YR 5/6) sandy clay loam, dark yellowish brown (10YR 4/6) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; common fine and very fine roots throughout; common fine and very fine tubular pores; 5 percent distinct clay films on all faces of peds; 5 percent gravel; slightly alkaline (pH 7.4); gradual smooth boundary.

Btk--24 to 59 centimeters; brownish yellow (10YR 6/6) sandy clay loam, yellowish brown (10YR 5/6) moist; moderate medium subangular blocky structure; moderately hard, firm, slightly sticky, slightly plastic; common fine and very fine roots throughout; common fine and very fine tubular pores; 10 percent distinct clay films on all faces of peds; 5 percent fine spherical calcium carbonate masses in matrix; 5 percent gravel; strongly effervescent; moderately alkaline (pH 8.4); gradual smooth boundary.

BCk--59 to 83 centimeters; olive yellow (2.5Y 6/6) very paragravelly sandy loam, light yellowish brown (2.5Y 6/4) moist; massive; soft, very friable, slightly sticky, slightly plastic; common interstitial pores; 5 percent carbonate concretions on bottom of rock fragments; 50 percent paragravel; strongly effervescent; moderately alkaline (pH 8.4); abrupt smooth boundary.

Cr--83 centimeters; sandstone bedrock, paralithic.

TYPE LOCATION:
Carbon County, WY
USGS Quadrangle: Dana
Latitude: 41.8441800
Longitude: -106.7398000
Datum: WGS84
Coordinates source: Hand-held GPS

RANGE IN CHARACTERISTICS:
Depth to argillic horizon: 5 to 24 centimeters
Depth to paralithic contact: 50 to 100 cm
Particle-size control section (weighted averages):
Clay content-18 to 35 percent
Total rock fragments-0 to 24 percent

A horizon
Hue-7.5YR to 2.5Y
Value-4 to 7 dry; 3 to 6 moist
Chroma-2 to 4
Texture (less than 2 mm fraction)-Loamy sand, fine sandy loam, sandy loam, loam, or sandy clay loam
Clay content-8 to 25 percent
Rock fragments-0 to 45 percent; 0 to 30 percent gravels, 0 to 45 percent channers
Calcium carbonate equivalent-0 to 5 percent
Reaction-pH 6.8 to 8.4
Thickness-2 to 12 centimeters

Bt horizon(s)
Hue-7.5YR to 2.5Y
Value-4 to 6 dry; 3 or 4 moist
Chroma-2 to 6
Texture (less than 2 mm fraction)-Loam, sandy clay loam, or clay loam
Clay content-19 to 32 percent
Rock fragments-0 to 10 percent; 0 to 10 percent gravels, 0 to 10 channers
Calcium carbonate equivalent-0 to 3 percent
Reaction-pH 7.0 to 8.4
Thickness-8 to 48 centimeters

Btk/Bk horizon(s) (when present)
Hue-7.5YR to 2.5Y
Value-4 to 6 dry; 3 to 5 moist
Chroma-2 to 6
Texture (less than 2 mm fraction)-Fine sandy loam, sandy loam, loam, sandy clay loam, or clay loam
Clay content-16 to 37 percent
Rock fragments-0 to 20 percent gravels
Calcium carbonate equivalent-5 to 15 percent
Sodium absorption ratio-0 to 6
Reaction-pH 8.0 to 8.8
Thickness-0 to 64 centimeters

BCk/C horizon(s) (when present)
Hue-10YR or 2.5Y
Value-5 to 8 dry; 4 to 6 moist
Chroma-3 or 4 dry; 2 to 6 moist
Texture (less than 2 mm fraction)-Clay loam , sandy clay loam, loam, sandy loam, or loamy sand
Clay content-9 to 34 percent
Rock fragments-0 to 70 percent; 0 to 70 percent gravels, 0 to 50 percent channers
Calcium carbonate equivalent-3 to 15 percent
Sodium absorption ratio-0 to 25
Reaction-pH 8.0 to 9.0
Thickness-0 to 53 centimeters

COMPETING SERIES:
Bluemod (WY) - soils do not have secondary calcium carbonate accumulations
Bondoe (MT) - soils are very deep
Bonfri (MT) - is found at elevations from 762 to 1524 meters (2,500 to 5,000 feet)
Chinatown (MT) - soils are moderately deep to lithic contact
Fattig (MT) - soils are moderately deep to lithic contact
Ferball (MT) - soils are very deep
Foreleft (MT) - soils are very deep
Foreright (WY) - soils are very deep
Jewel (WY) - soils are deep to paralithic contact
Mckaylake (WY) - soils are very deep
Mountairy (WY) - soils are very deep
Overlandtrail (WY) - soils have a gypsic horizon
Raghigh (WY) - soils are very deep
Raghorn (MT) - soils are very deep
Seminoe (WY) - soils are very deep
Swingstation (WY) - soils have a gypsic horizon
Toothaker (WY) - formed in granite schist and gneiss bedrock
Zagplat (WY) - soils are deep to paralithic contact

GEOGRAPHIC SETTING:
Parent material: Slope alluvium or colluvium over residuum weathered from sandstone and shale
Landform: Cuestas, escarpments, hillslopes, fan remnants, dip slopes, scarp slopes, basin-floor remnants, and structural benches
Slope ranges: 1 to 45 percent
Mean annual temperature range: 1.1 to 5.0 degrees C (34 to 41 degrees F)
Mean annual precipitation range: 228 to 305 millimeters (9 to 12 inches)
Frost-free period: 30 to 80 days
Elevation: 1,930 to 2,640 meters (6,332 to 8,661 feet)
Climate: Long, cold winters; cool, moist springs; short, warm summers

GEOGRAPHICALLY ASSOCIATED SOILS:
None listed.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Well drained
Saturated Hydraulic Conductivity: 0.5 to 150 um/sec

USE AND VEGETATION:
Bonhigh soils are primarily used for grazing. The potential native vegetation is Wyoming big sagebrush, letterman needlegrass, sandberg bluegrass, bluebunch wheatgrass, rabbitbrush. and other perennial grasses, forbs, and shrubs.

DISTRIBUTION AND EXTENT:
Bonhigh soils are of small extent in western Wyoming; MLRA 34A

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana

SERIES PROPOSED:
Carbon County, WY 2018. The Bonhigh series name is a coined phrase.

REMARKS:
Typical Pedon Taxonomic Features:
Ochric epipedon-0 to 6 centimeters (A horizon)
Argillic horizon-6 to 59 centimeters (Bt and Btk horizons)
Paralithic contact-83 centimeters (Cr horizon)
Particle-size control section-6 to 56 centimeters (Bt and part of the Btk horizon)
Taxonomic Version: Keys to Soil Taxonomy, 13th edition, (2022)

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National Cooperative Soil Survey
U.S.A.