LOCATION NEWBAR                  OR

Tentative Series
IRD. JLW/RJO/DAL
04/2016

NEWBAR SERIES

The Newbar series consists of very deep, somewhat poorly drained soils formed in alluvium from mixed rocks on low terraces and gravel bars on mountain valley floors. Newbar soils are saturated with flowing water that fluctuates in depth with stream flow. Slopes are 0 to 5 percent. Mean annual precipitation is about 23 inches and mean annual temperature about 44 degrees F.

TAXONOMIC CLASS: Sandy-skeletal, mixed, frigid Oxyaquic Xerofluvents

TYPICAL PEDON: Newbar gravelly sandy loam - wet woodlands and meadows, on a 0 percent slope at an elevation of 3,810 feet. (Colors are for moist soil unless otherwise noted. Soil textures are apparent field textures.)

A--0 to 6 inches; very dark brown (7.5YR 2.5/2) very gravelly sandy loam, brown (7.5YR 4/2) dry; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine and few fine roots; few very fine and common fine irregular pores; 45 percent gravel; neutral (pH 6.8); clear smooth boundary. (2 to 7 inches thick)

C1--6 to 23 inches; dark brown (7.5YR 3/4) very gravelly loamy sand, brown (7.5YR 4/3) dry; single grain; loose, nonsticky and nonplastic; common very fine, fine and few medium roots; common fine irregular pores; 50 percent gravel, and 5 percent cobbles; neutral (pH 6.9); clear smooth boundary. (5 to 20 inches thick)

C2--23 to 35 inches; dark brown (7.5YR 3/4) extremely gravelly loamy sand, brown (7.5YR 5/4) dry; single grain; slightly hard, loose, nonsticky and nonplastic; few very fine roots; few fine irregular pores; 55 percent gravel, 25 percent cobbles, and 2 percent stones; slightly acid (pH 6.5); clear smooth boundary. (7 to 25 inches thick)

C3--35 to 38 inches; dark brown (7.5YR 3/4) sandy clay loam, brown (7.5YR 5/4) dry; common medium distinct reddish yellow (7.5YR 6/6) redox concentrations; weak fine subangular blocky structure; hard, friable, slightly sticky and slightly plastic; few very fine irregular pores; 5 percent gravel; slightly alkaline (pH 7.8); clear smooth boundary. (0 to 3 inches thick)

C4--38 to 61 inches; dark brown (7.5YR 3/4) very gravelly sandy loam, brown (7.5YR 4/4) dry; single grain structure; very hard, loose, nonsticky and nonplastic; few fine irregular pores; 50 percent gravel, and 5 percent cobbles; slightly alkaline (pH 7.8).

TYPE LOCATION: Crook County, Oregon
Section 08 (NE1/4, SW1/4, SE1/4), T. 13 S., R. 18 E.
UTM Zone 10; 4,924,530 northing; 691,670 easting
Latitude: 44 degrees 27 minutes 02 seconds North
Longitude: 120 degrees 35minutes 28 seconds West
USGS Quadrangle: Steins Pillar

RANGE IN CHARACTERISTICS:
Soil Temperature: frigid regime
Mean Annual Soil Temperature: 41 to 46 degrees F
Mean Summer Soil Temperature: 50 to 54 degrees F
Mean Winter Soil Temperature: 32 to 38 degrees F
Soil Moisture: xeric regime, dry 45 to 60 days in summer

Particle-size Control Section: 10 to 40 inches below mineral surface
Clay content, average: 2 to 8 percent
Rock fragment content, average: 50 to 65 percent

Diagnostic Horizons and Features:
ochric epipedon
oxyaquic conditions: saturation with water, without reduction, within 20 inches of the soil surface for 30 or more days during Spring runoff

A horizon:
color, moist: 7.5YR 2.5/2, 3/2; 10YR 2/1, 2.5/2, 3/2
color, dry: 7.5YR 4/2, 5/2; 10YR 4/1, 4/2, 4/3
texture: GRV-SL, CBV-LS
clay content: 3 to 8 percent
rock fragment content: 35 to 60 percent
gravel: 30 to 45 percent
cobbles: 0 to 25 percent
stones: 0 to 5 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
organic carbon: 1.5 to 2.4 percent

C1 horizon:
color, moist: 7.5YR 3/4; 10YR 4/2, 4/3
color, dry: 7.5YR 4/3; 10YR 5/2, 5/4, 6/2
texture: GRV-LS, CBV-LS, GRV-SL
clay content: 0 to 8 percent
rock fragment content: 45 to 60 percent
gravel: 25 to 60 percent
cobbles: 0 to 25 percent
stones: 0 to 5 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
organic carbon: 0.3 to 0.6 percent

C2 horizon:
color, moist: 7.5YR 3/4; 10YR 4/3, 4/4
color, dry: 7.5YR 5/4; 10YR 5/4
texture: GRX-LS, CBX-LS, GRX-SL, CBX-SL
clay content: 0 to 8 percent
rock fragment content: 65 to 85 percent
gravel: 35 to 60 percent
cobbles: 0 to 25 percent
stones: 0 to 10 percent
reaction: slightly acid to neutral; pH: 6.1 to 7.3
organic carbon: 0.3 to 0.6 percent

C3 horizon (when present):
color, moist: 7.5YR 3/4; 10YR 4/2, 5/4
color, dry: 7.5YR 5/4; 10YR 6/4
texture: L, SCL
clay content: 10 to 25 percent
rock fragment content: 5 to 10 percent
gravel: 5 to 10 percent
reaction: slightly acid to alkaline; pH: 6.1 to 7.8
organic carbon: 0.6 to 0.9 percent

C4 horizon:
color, moist: 7.5YR 3/4; 10YR 4/3, 5/2
color, dry: 7.5YR 4/4; 10YR 4/3, 5/3
texture: GRV-LS, GRV-SL, CBV-SL
clay content: 0 to 15 percent
rock fragment content: 45 to 60 percent
gravel: 35 to 60 percent
cobbles: 0 to 25 percent
stones: 0 to 10 percent
reaction: neutral to slightly alkaline; pH: 6.6 to 7.8
organic carbon: 0.3 to 0.6 percent

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Landform: low terraces and gravel bars of mountain valley floors
Slope gradient: 0 to 5 percent
Parent material origin: alluvium
Lithology: mixed rocks
Elevation: 3,200 to 5,000 feet
Climate: cold, wet winters and warm, dry summers
Mean annual precipitation: 15 to 31 inches
Mean annual air temperature: 39 to 44 degrees F
Frost-free period: 40 to 110 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Dardry -- on high terraces of mountain valley floors; loamy-skeletal particle-size control section and a thick mollic epipedon
Melloe -- on floodplains of narrow mountain valley floors; loamy-skeletal particle-size control section, mollic epipedon and an aquic moisture regime
Sandur -- on low terraces and floodplains of mountain valley floors; aquic moisture regime
Terrodd -- on wet meadow floodplains with mollic epipedon and fine-loamy particle-size control section

DRAINAGE AND PERMEABILITY:
Drainage: somewhat poorly drained
Permeability: moderately rapid to rapid

USE AND VEGETATION:
Use: wet woodland, watershed, wildlife, recreation, range
Native vegetation: Grand fir, Engelmann spruce, Douglas fir, western larch, lodgepole pine, ponderosa pine, western juniper, mountain big sagebrush, common snowberry, common yarrow, common horsetail, common mullein, western hawkweed, sticky geranium, small-flowered willow-herb, fireweed, Kentucky bluegrass, western fescue, elk sedge and pinegrass.
Plant Association: Dominate: FEOC (western fescue); may include: PSME/SYAL (Douglas fir/common snowberry); ABGR/CAGE2 (grand fir/elk sedge)

DISTRIBUTION AND EXTENT:
Distribution: Ochoco Mountains, Wallowa Mountains and Central Blue Mountains of northeastern Oregon; MLRA 10
Extent: small

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

SERIES PROPOSED: Umatilla National Forest, Oregon, 2007. Name is coined.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
ochric epipedon:
particle-size control section: 10 to 40 inches; C1, C2, C3, C4

Soil is saturated with water, without reduction, within 20 inches of the soil surface for 30 or more days during Spring runoff

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National Cooperative Soil Survey
U.S.A.