LOCATION WINEGAR ID

Established Series
Rev. JD-JAL-KLS
09/2022

WINEGAR SERIES

The Winegar series consists of moderately well drained soils on ground moraines. Slopes are 4 to 15 percent. These soils formed in glacial till derived from mixed volcanic bedrock. They are influenced by loess and volcanic ash. Winegar soils are moderately deep to dense basal till. Permeability is moderately slow. Mean annual precipitation is about 890 mm and mean annual air temperature is about 3 degrees C.

TAXONOMIC CLASS: Ashy, amorphic Typic Vitricryands

TYPICAL PEDON: Winegar gravelly silt loam, supporting a Douglas-fir/blue huckleberry community, woodland; on a 7 percent rolling slope with an east aspect; about 1900 meters elevation. (Colors are for dry soil unless otherwise noted.)

Oi--0 to 3 cm; forest litter; abrupt smooth boundary.

A--3 to 13 cm; dark yellowish brown (10YR 4/4) gravelly silt loam, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, nonsticky and slightly plastic; many very fine, common medium and few fine roots; many very fine irregular pores; 15 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 5.6); abrupt smooth boundary. (5 to 20 cm thick)

Bw1--13 to 38 cm; dark yellowish brown (10YR 4/4) silt loam, dark yellowish brown (10YR 3/4) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and slightly plastic; common very fine and few fine roots; common very fine tubular pores; 10 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 5.8); gradual smooth boundary.

Bw2--38 to 68 cm; yellowish brown (10YR 5/4) loam, dark yellowish brown (10YR 3/4) moist; weak coarse subangular blocky structure; soft, very friable, nonsticky and slightly plastic; common very fine and few fine roots; common very fine tubular pores; 10 percent pebbles, trace cobbles, stones and boulders; moderately acid (pH 6.0); abrupt irregular boundary. (Combined thickness of Bw horizons - 25 to 115 cm)

BC--68 to 98 cm; light olive brown (2.5Y 5/4) very gravelly sandy loam, olive brown (2.5Y 4/4) moist; massive; soft, very friable; nonsticky and slightly plastic; many very fine and few fine roots; few very fine tubular pores; 50 percent, gray (10YR 5/1) cobble-size fragments of dense basal till; 25 percent pebbles, 10 percent cobbles and trace stones and boulders; slightly acid (pH 6.4); clear irregular boundary. (0 to 38 cm thick)

Cd--98 to 167 cm; gray (10YR 5/1) dense basal till that crushes to a very gravelly sandy loam, dark grayish brown (10YR 4/2) moist; massive; hard, firm and brittle, nonsticky and nonplastic; few very fine roots following the weathering rind; many very fine and few fine irregular pores; common fine (less than 5 mm thick) distinct, dark yellowish brown (10YR 3/4) moist weathering rind around coarse pebbles, cobbles, stones and boulders; 25 percent pebbles, 10 percent cobbles, trace stones and boulders; slightly acid (pH 6.5).

TYPE LOCATION: Fremont County, Idaho; about 29 km east of Ashton, Idaho: about 855 meters north and 365 meters east of the southwest corner; sec. 12., T. 9 N., R. 46 E.; Lat. 44 degrees 7 minutes, 18 seconds north; Long. 111 degrees, 5 minutes, 21 seconds west.

RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3 to 5 degrees C
Mean summer soil temperature--6 to 8 degrees C
Moisture control section--10 to 30 cm; dry throughout the moisture control section for less than 30 consecutive days during the four months following the summer solstice
Thickness of andic soil properties--50 to 100 cm
Depth to dense basal till--50 to 100 cm

Particle size control section:
Rock fragment contents--15 to 35 percent, weighted average
Base saturation by ammonium acetate--10 to 40 percent
Reaction--pH 5.1 to 6.5

A horizon
Hue--10YR or 7.5YR
Value--4 or 5 dry, 3 or 4 moist
Chroma--2 through 4 dry or moist
Rock fragment content--15 to 25 percent total--15 to 20 percent pebbles; 0 to 5 percent cobbles; 0 to 5 percent stones
Volcanic glass content--5 to 20 percent in the 0.02 to 2.0 mm size fraction
Bulk density--0.9 to 1.10 grams per cubic centimeter
Acid oxalate extractable Al plus Fe--2.0 to 4.0 percent
15 bar water retention--4 to 10 percent on air dried samples
Phosphate retention--50 to 85 percent

Bw horizons
Hue--10YR or 7.5YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--4 or 6 dry or moist
Texture--loam, silt loam, or sandy loam
Rock fragment content--5 to 30 percent total--5 to 25 percent pebbles; 0 to 10 percent cobbles; 0 to 5 percent stones
Volcanic glass content--5 to 20 percent in the 0.02 to 2.0 mm size fraction
Bulk density--1.0 to 1.3 grams per cubic centimeter
Acid oxalate extractable Al plus Fe--2.0 to 4.0 percent
15 bar water retention--4 to 10 percent on air dried samples
Phosphate retention--50 to 85 percent

BC horizon
Hue--2.5Y through 7.5YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--4 or 6 dry or moist
Texture--loam or sandy loam
Rock fragment content--35 to 60 percent total--25 to 45 percent pebbles; 0 to 20 percent cobbles; 0 to 5 percent stones
Dense basal till fragments--15 to 85 percent
Volcanic glass content--less than 10 percent in the 0.02 to 2.0 mm size fraction
Bulk density--1.3 to 1.5 grams per cubic centimeter
Acid oxalate extractable Al plus Fe--1.0 to 3.0 percent
15 bar water retention--4 to 10 percent on air dried samples
Phosphate retention--25 to 60 percent
Horizon is discontinuous in some pedons.

Cd horizon
Hue--2.5Y or 10YR
Value--5 or 6 dry, 3 or 4 moist
Chroma--1 or 2 dry or moist
Texture, crushed--sandy loam or loamy sand
Rock fragment content--25 to 60 percent
Pebbles--25 to 45 percent
Cobbles--0 to 10 percent
Stones--0 to 5 percent
Bulk density--1.8 to 2.1 grams per cubic centimeter
Ammonium oxalate extractable Al plus Fe--less than 0.4 percent

COMPETING SERIES: These are the Belrick, and Linksterly series. Belrick soils have 75 to 85 percent volcanic glass and glass coated aggregates in the minerology control section. Lindsterly soils have umbric epipedons.

GEOGRAPHIC SETTING:
Landform--undulating to rolling ground moraines
Elevation--1900 to 3025 meters
Slopes--4 to 15 percent
Parent material--glacial till derived from mixed volcanic rock. There is some loess and volcanic ash influence in the upper part. Surface and subsoil layers of these soils are lightly reworked by colluvial or alluvial action. Substratums are dense basal till.
Mean annual precipitation--760 to 1100 mm being well-distributed throughout the year
Mean annual air temperature--0 to 4 degrees C
Frost free period--5 to 70 days

GEOGRAPHICALLY ASSOCIATED SOILS: None listed

DRAINAGE AND PERMEABILITY: Moderately well drained; slow to rapid runoff; moderately slow permeability

USE AND VEGETATION: Winegar soils are used for wildlife habitat, recreation and woodland. These soils commonly support lodgepole pine/grouse whortleberry, lodgepole pine/pinegrass, and lodgepole pine/blue huckleberry community types. The potential native vegetation is a subalpine fir/grouse whortleberry plant association, pinegrass phase or subalpine fir/blue huckleberry plant association, grouse whortleberry phase.

DISTRIBUTION AND EXTENT: Winegar soils are moderately extensive in northwestern Wyoming and southeastern Idaho; MLRA 43B

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

SERIES ESTABLISHED: Targhee National Forest, Fremont County, Idaho, 1997

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon--3 to 13 cm (A horizon)
Cambic horizon--13 to 98 cm (Bw1, Bw2 and BC horizons)
Andic soil properties--3 to 68 cm (A, Bw1, and Bw2 horizons)
Dense basal till--98 to 167 cm (Cd horizon)
Particle size control section--25 to 98 cm (part of the Bw1, the Bw2 and BC horizons)

Winegar soils have a cryic temperature regime and a udic soil moisture regime with a typic subclass.

ADDITIONAL DATA: Full characterization data (8/26/96), National Soil Survey Laboratory, Lincoln, NE. Client assigned lab number: S94ID-043-001. Project file number: 95P-27; Lab assigned number: peon 95P 148; samples: 95P 1020-1024.

Converted to metric, updated formatting, and O horizons were updated to start at zero. Competing series section was not updated. 9/2022

National Cooperative Soil Survey
U.S.A.