LOCATION WOODLAKE                AK

Established Series
IRD. ATD/NDP/SCD
02/2022

WOODLAKE SERIES

Landscape--mountains
Landform--mountain slopes
Slope--20 to 40 percent
Parent material--colluvium over residuum
Mean annual precipitation--about 1400 mm
Mean annual air temperature--about 5 degrees C
Depth class--moderately deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--gelic
Soil moisture subclass--typic

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, acid, subgelic Typic Gelorthents

TYPICAL PEDON: Woodlake sandy loam in an area of dwarf scrub, on a mountain slope of 25 percent at an elevation of 444 m (When described on July 22, 2013, the soil was moist from the surface to a depth of 70 cm.)

Oe--0 to 9 cm; moderately decomposed plant material; extremely acid (pH 4.3); clear smooth boundary

A--9 to 37 cm; extremely stony sandy loam, yellowish brown (10YR 5/4) dry, dark yellowish brown (10YR 3/4) moist; weak fine granular structure; slightly hard, friable, nonsticky and nonplastic; common very fine and many fine roots throughout; common very fine and fine irregular pores; 5 percent subangular gravel, 10 percent subangular cobbles, and 60 percent subangular stones; very strongly acid (pH 4.8); gradual smooth boundary

C--37 to 70 cm; extremely stony sandy loam, yellowish brown (10YR 5/4) dry, 80 percent olive (5Y 4/3) and 20 percent dark yellowish brown (10YR 3/4) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine roots throughout; common very fine and fine irregular pores; 15 percent subangular gravel, 30 percent subangular cobbles, and 30 percent subangular stones; strongly acid (pH 5.5); gradual irregular boundary

2R--70 cm; bedrock

TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.5506101, longitude -136.5170728, datum WGS84 (coordinates determined by a GPS unit)

RANGE IN CHARACTERISTICS:
Mean annual soil temperature-- -1 to 1 degree C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic)
Depth to bedrock--50 to 100 cm (moderately deep)
Other features--lithologic discontinuity

Particle-size control section
*Clay content--2 to 10 percent
*Total rock fragment content--35 to 89 percent

Oi or Oe horizon
Thickness--0 to 13 cm

A horizon
Hue--7.5YR or 10YR moist or dry
Value--2 to 4 moist, 4 to 6 dry
Chroma--4 or 6 moist or dry
Fine-earth texture--sandy loam, loamy sand
Clay content--2 to 7 percent
Total rock fragment content--60 to 89 percent
Gravel content--3 to 10 percent
Cobble content--8 to 25 percent
Stone content--35 to 65 percent
Reaction (pH)--4.1 to 5.5
Thickness--10 to 35 cm

C horizon
Hue--10YR to 5Y moist or dry
Value--3 to 6 moist, 5 to 7 dry
Chroma--3 to 6 moist or dry
Fine-earth texture--sandy loam, loamy sand
Clay content--6 to 10 percent
Total rock fragment content--60 to 89 percent
Gravel content--15 to 20 percent
Cobble content--15 to 45 percent
Stone content--15 to 40 percent
Reaction (pH)--5.2 to 6.8
Thickness--20 to 45 cm

COMPETING SERIES: None

GEOGRAPHIC SETTING:
Elevation--400 to 450 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--850 to 1850 mm
Mean annual air temperature--0 to 9 degrees C
Frost-free period--90 to 154 days

GEOGRAPHICALLY ASSOCIATED SOILS:
Flapjack--25 to 50 cm (somewhat poorly drained) to aquic conditions; in swales of similar landforms

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Depth to saturation in normal years--more than 70 cm year round
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--high throughout mineral soil material

USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential native vegetation--Sitka alder, western moss heather, spiny woodfern, copperbush, Alaska bellheather, rush, Nootka lupine, partridgefoot

DISTRIBUTION AND EXTENT: Alexander Archipelago-Gulf of Alaska Coast, Alaska; MLRA 220; small extent

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

SERIES ESTABLISHED: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; 2020.

REMARKS:
Diagnostic horizons and other features recognized in this pedon
*Ochric epipedon
*Depth to lithic contact--70 cm
*Depth to lithologic discontinuity--70 cm
*Particle-size control section--zone from 34 to 70 cm

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National Cooperative Soil Survey
U.S.A.