LOCATION SANDALEE WA

Established Series
Rev. CAB/SBC
11/2011

SANDALEE SERIES

The Sandalee series consists of very deep, somewhat poorly drained soils formed in alluvium on young terraces and stable floodplains. Slopes are 0 to 5 percent. The mean annual precipitation is about 790 millimeters. The mean annual temperature is about 9 degrees C.

TAXONOMIC CLASS: Coarse-loamy, isotic, frigid Fluvaquentic Dystroxerepts

TYPICAL PEDON: Sandalee sandy loam, on a floodplain landform with a slope of 0 percent at 381 meters elevation under coniferous forest vegetation. When described on June 7, 2006 the soil was moist to 80 centimeters and saturated below. (Colors are for moist soil unless otherwise noted.)

Oi--0 to 2 cm; slightly decomposed plant material; abrupt wavy boundary.

A--2 to 11 cm; black (10YR 2/1) sandy loam, dark grayish brown (10YR 4/2) dry; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; common very fine, fine, and medium roots throughout; very strongly acid (pH 5.0); abrupt wavy boundary.

Bw--11 to 40 cm; olive brown (2.5Y 4/3) fine sandy loam, light yellowish brown (2.5Y6/3) dry; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; few very fine, fine, and medium roots throughout; 5 percent fine gravel; strongly acid (pH 5.5); clear wavy boundary.

Bg1--40 to 56 cm; dark grayish brown (10YR 4/2) fine sandy loam, light brownish gray (10YR 6/2) dry; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; few very fine, fine, medium, and coarse roots throughout; many distinct medium gray (2.5Y 6/1) iron depletions with clear boundaries in matrix and many distinct medium dark yellowish brown (10YR 4/4) masses of oxidized iron with clear boundaries in matrix; 5 percent fine gravel; moderately acid (pH 5.7); clear wavy boundary.

Bg2--56 to 80 cm; dark grayish brown (10YR 4/2) fine sandy loam, light brownish gray (10YR 6/2) dry; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; few very fine, fine, and medium roots throughout; common distinct medium gray (2.5Y 6/1) iron depletions with clear boundaries in matrix and many distinct medium dark yellowish brown (10YR 4/4) masses of oxidized iron with clear boundaries in matrix; 5 percent fine gravel; moderately acid (pH 5.8); clear wavy boundary.

Cg--80 to 150 cm; variegated loamy coarse sand; single grain; loose, nonsticky, nonplastic; common faint medium dark yellowish brown (10YR 4/4) masses of oxidized iron with diffuse boundaries in matrix and many faint medium dark grayish brown (2.5Y 4/2) iron depletions with diffuse boundaries in matrix; moderately acid (pH 5.9); 5 percent fine gravel.

TYPE LOCATION: North Cascades National Park, Chelan County, Washington; 690 meters west and 535 meters north of SE corner of Section 22, T33N, R17E Willamette Meridian; Stehekin, Washington USGS quadrangle; 48 degrees 20 minutes 34 seconds north latitude, 120 degrees 43 minutes 12 seconds west longitude; NAD83; UTM 668937 meters E, 5356910 meters N, zone 10N.

RANGE IN CHARACTERISTICS:
Mean annual soil temperature: 6 to 8 degrees C. Frigid soil temperature regime.
Soil moisture control section: dry for 60 to 90 consecutive days from June to October. Xeric soil moisture regime.

A horizon:
Hue - 10 YR or 7.5YR
Value - 2 or 3 moist, 4 or 5 dry
Chroma - 1 to 3 moist or dry
Fine earth texture -SL or FSL
Rock fragments - 0 to 10 percent total
0 to 10 percent gravel
0 to 5 percent cobbles
Clay content - 3 to 8 percent
Volcanic glass - 0 to 5 percent
Reaction - very strongly acid to strongly acid
Thickness - 0 to 40 centimeters

Bw horizons:
Hue - 10 YR or 2.5YR
Value - 3 to 5 moist, 4 to 6 dry
Chroma - 2 to 4 moist or dry
Fine earth texture -SL, FSL, or VFSL
Rock fragments - 0 to 15 percent total
0 to 10 percent gravel
0 to 10 percent cobbles
Clay content - 3 to 8 percent
Volcanic glass - 0 to 5 percent
Reaction - strongly acid to moderately acid
Thickness - 0 to 40 centimeters

Bg horizons:
Hue -10YR or 2.5Y
Value - 3 to 5 moist, 4 to 6 dry
Chroma - 2 to 4 moist or dry
Fine earth texture - SL, FSL or LFS
Rock fragments - 0 to 15 percent total
0 to 10 percent gravel
0 to 10 percent cobbles
Clay content - 2 to 8 percent
Volcanic glass - 0 to 5 percent
Reaction - strongly acid to slightly acid
Thickness - 30 to 100 centimeters

Cg horizon:
Hue -2.5Y or Variegated
Value - 3 to 5 moist, 4 to 6 dry
Chroma - 3 or 4 moist or dry
Fine earth texture - LCOS, LS or COS
Rock fragments - 0 to 35 percent total
0 to 25 percent gravel
0 to 10 percent cobbles
0 to 5 percent stones
Clay content - 0 to 6 percent
Volcanic glass - 0 to 5 percent
Reaction - moderately acid to slightly acid

COMPETING SERIES: There are no competing series in this or similar families.

GEOGRAPHIC SETTING: The Sandalee soils are on young terraces and floodplains at elevations of 300 to 450 meters. Slopes are 0 to 5 percent. These soils formed in alluvium. The climate consists of cool, dry summers and cold, wet winters. Mean annual precipitation ranges from 600 to 1200 millimeters, and mean annual air temperature ranges from 5 to 10 degrees C. Frost free season is 70 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kettling (T) and Torment (T) soils. Kettling soils are found on the same landforms but do not have redoximorphic features. Torment soils are found on the most active portions of the same floodplains, are somewhat excessively drained, and do not have pedogenic development.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained; moderately high to very high saturated hydraulic conductivity.

USE AND VEGETATION: Used for watershed, recreation, woodland, and wildlife habitat. Potential natural vegetation consists of Douglas-fir, western redcedar, grand fir, and black cottonwood with an understory of pathfinder, wild ginger, trailing blackberry, sweet-scented bedstraw, and Pacific twisted stalk.

DISTRIBUTION AND EXTENT: Western slopes of the North Cascade Mountains, Washington. MLRA 3. Series is of small extent.

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

SERIES ESTABLISHED: North Cascades National Park Service Complex soil survey, 2011.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 2 to 102 centimeters (A, Bw1, Bg1, Bg2, and upper 22 centimeters of the Cg horizons)
Ochric epipedon: 0 to 18 centimeters (Oi, A, and the upper 7 centimeters of Bw horizon)
Cambic horizon: 11 to 80 centimeters (Bw, Bg1, and Bg2 horizons)
Redoximorphic features with chroma of 2 or less: 40 to 152 centimeters (Bg1, Bg2, and Cg horizons)
An irregular decrease in organic carbon is inferred from the alluvium parent material and the young terrace and floodplain landforms.

National Cooperative Soil Survey
U.S.A.