LOCATION ULESQIIRLUNI            AK

Established Series
Rev. MJM/DLM
02/2022

ULESQIIRLUNI SERIES

Depth class: very deep
Drainage class: moderately well drained
Landforms: flood plains
Parent material: coarse-silty alluvium
Slope: 0 to 2 percent
Annual precipitation: about 19 inches, 480 mm
Annual temperature: about 28 degrees F., -2 C
Frost-free period: 115 to 146 days

TAXONOMIC CLASS: Coarse-silty, mixed, superactive, nonacid Typic Cryofluvents

TYPICAL PEDON: Ulesquiirluni - on a slope of 1 percent. (All colors are for moist soil)

Oe--0 to 2 inches (0 to 4 cm); very dark grayish brown (10YR 3/2) moderately decomposed plant material; many very fine and fine and few medium roots; slightly acid (pH 6.3); abrupt wavy boundary. (2 to 6 inches thick, 5 to 16 cm)

A--2 to 6 inches (4 to 15 cm); very dark grayish brown (10YR 3/2) stratified silt loam to highly decomposed plant material; moderate fine granular structure; very friable, nonsticky and slightly plastic; common very fine and fine and few medium roots; moderately acid (pH 5.6); clear wavy boundary. (2 to 6 inches thick, 2 to 15 cm)

C1--6 to 37 inches (15 to 95 cm); very dark gray (10YR 3/1) and very dark grayish brown (10YR 3/2) stratified silt loam to silt; massive; very friable, nonsticky and slightly plastic; slightly acid (pH6.4); clear, wavy boundary. (10 to 53 inches thick, 25 to 135 cm)

Cg--37 to 55 inches (95 to 140 cm); dark brown (10YR 3/3) stratified silt loam to slightly decomposed plant material; weak fine granular structure; very friable, nonsticky and slightly plastic; few very fine and fine roots; 2 mm dark gray (2.5Y 4/1) low chroma redox depletions (approximately 1 percent of horizon); slightly acid (pH 6.5); clear, wavy boundary. (16 to 39 inches thick, 40 to 39 cm)

C2--55 to 60 inches (140 to 152 cm); very dark grayish brown (2.5Y 3/2) stratified silt to silt loam; massive; very friable, nonsticky and slightly plastic; neutral (pH6.7); clear, wavy boundary.

TYPE LOCATION: Western Interior Rivers Area, Alaska; Aniak, Alaska; UTM north 6826788 and UTM east 471084, zone 4.

RANGE IN CHARACTERISTICS:

Soil moisture regime: udic
Depth to redoximorphic depletions: 16 to 39 inches, 40 to 100 cm
Depth to stratified textures and irregular decrease in organic carbon: 2 to 6 inches, 5 to 16 cm

O horizon:
Matrix color: hue of 5YR to 10YR; value of 2 or 3; chroma of 1 to 3
Reaction class: moderately acid or slightly acid

A horizon:
Matrix color: hue of 10YR to 5Y; value of 2 or 3; chroma of 1 to 3
Reaction class: strongly acid to slightly acid

C1 horizon:
Matrix color: hue of 10YR to 5Y; value of 3 or 4; chroma of 1 to 3
Reaction class: strongly acid to slightly acid

Cg horizon:
Matrix color: hue of 10YR to 5Y; value of 3 or 4; chroma of 1 or 2
Redoximorphic depletions: hue of 2.5Y or 5Y; value of 4 or 5; chroma of 1 or 2
Reaction class: strongly acid to slightly acid

C2 horizon:
Matrix color: hue of 10YR to 5Y; value of 4 to 6; chroma of 1 to 4
Texture: stratified fine sand to silt or stratified gravelly silt to silt loam
Coarse fragments: 0 to 25 percent gravel
Reaction class: strongly acid to neutral

COMPETING SERIES: There are no competing series.

GEOGRAPHIC SETTING:
Depth class: very deep
Drainage class: moderately well drained
Landforms: flood plains
Parent material: coarse-silty alluvium
Slope: 0 to 2 percent
Annual precipitation: about 19 inches, 480 mm
Annual temperature: about 28 degrees F., -2 C
Frost-free period: 115 to 146 days

GEOGRAPHICALLY ASSOCIATED SOILS: These the Maqulluq and Ulet soils. Maqulluq soils are on sandy terraces and climbing dunes. Ulet soils have sandy strata and are on more frequently flooded positions.

DRAINAGE AND PERMEABILITY: Moderately well drained and very low runoff. Saturated hydraulic conductivity is moderately high.

USE AND VEGETATION: Used for wildlife habitat and watershed. Native vegetation is *.

DISTRIBUTION AND EXTENT: MLRA 238, Yukon-Kuskokwim Coastal Plains, Alaska. The series is of small extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA

SERIES ESTABLISHED: Western Interior Rivers Area, Alaska, 2007

REMARKS: Diagnostic features and horizons recognized in this profile include:
Ochric horizon: 2 to 6 inches, 4 to 15 cm. (A horizon)
Redoximorphic features: 35 to 55 inches, 95 to 104 cm. (Cg horizon)
Irregular decrease in organic carbon: 2 to 60 inches, 4 to 152 cm. (A horizon and C horizons)
Coarse-silty particle-size control section: 10 to 40 inches, 25 to 102 cm below the O horizon
Temperature regime: cryic
Moisture regime: udic

ADDITIONAL DATA:

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National Cooperative Soil Survey
U.S.A.