LOCATION KUTSKLOH AK
Established Series
IRD. ATD/NDP/SCD
12/2022
KUTSKLOH SERIES
Landscape--hills, mountains
Landform--hillslopes, mountain slopes
Slope--5 to 40 percent
Parent material--organic material over colluvium
Mean annual precipitation--about 2500 mm
Mean annual air temperature--about 6 degrees C
Depth class--very deep
Drainage class--poorly drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--aquic
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Oxyaquic Humicryepts
TYPICAL PEDON: Kutskloh silt loam, forested, on a mountain slope of 40 percent at an elevation of 90 m (When described on May 28, 2013, the soil was moist from the surface to a depth of 25 cm and wet from a depth of 25 to 150 cm.)
Oe--0 to 9 cm; mucky peat, very dark brown (7.5YR 2.5/2) moist; common medium, coarse, and very coarse and many very fine and fine roots throughout; strongly acid (pH 5.3); gradual smooth boundary
Oa--9 to 21 cm; highly decomposed plant material, black (10YR 2/1) moist; common medium, coarse, and very coarse and many very fine and fine roots throughout; strongly acid (pH 5.4); gradual smooth boundary
A1--21 to 30 cm; gravelly silt loam, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine granular structure; slightly hard, friable, slightly sticky and nonplastic; common very fine, fine, and medium roots throughout; common very fine and fine irregular pores; 15 percent subangular gravel, by volume; strongly acid (pH 5.2); clear smooth boundary
A2--30 to 150 cm; extremely stony silt loam, dark gray (10YR 4/1) dry, black (10YR 2/1) moist; weak fine granular structure; slightly hard, friable, slightly sticky and nonplastic; common fine roots throughout; common very fine and fine irregular pores; 5 percent subangular cobbles, 10 percent subangular gravel, and 60 percent subangular stones, by volume; strongly acid (pH 5.2)
TYPE LOCATION: Glacier Bay National Park and Preserve-Gustavus Area, Alaska; Hoonah-Angoon Census Area; latitude 58.3430511, longitude -136.2926596, datum WGS84 (coordinates determined by a GPS unit)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--1 to 7 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic)
Thickness of umbric epipedon--18 to 40 cm or more
Thickness of folistic epipedon--20 to 40 cm
Particle-size control section
*Clay content--3 to 15 percent
*Total rock fragment content--35 to 85 percent
Oi or Oe horizon
Thickness--5 to 20 cm
Oa horizon
Thickness--5 to 20 cm
A1 horizon
Hue--7.5YR or 10YR moist or dry
Value--2 to 3 moist, 4 to 5 dry
Chroma--1 to 3 moist or dry
Clay content--3 to 15 percent
Total rock fragment content--10 to 18 percent gravel
Reaction (pH)--4.3 to 5.2
Thickness--5 to 35 cm
A2 or AC horizon
Hue--7.5YR or 10YR moist or dry
Value--2 to 3 moist, 4 to 5 dry
Chroma--1 to 3 moist or dry
Clay content--3 to 15 percent
Total rock fragment content--60 to 85 percent
Gravel content--10 to 20 percent
Cobble content--5 to 15 percent
Stone content--45 to 70 percent
Reaction (pH)--4.3 to 5.2
Thickness--50 to 115 cm
COMPETING SERIES: None
GEOGRAPHIC SETTING:
Elevation--0 to 250 m
Climate--cool, moist summers; mild, wet winters
Mean annual precipitation--1750 to 3350 mm
Mean annual air temperature--3 to 8 degrees C
Frost-free period--90 to 154 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Passage--50 to 100 cm (moderately deep) to a lithic contact; on similar landforms
Kashoto--organic soil material throughout profile; in muskegs of similar landforms
Maquinna--100 to 150 cm (deep) to a lithic contact; on similar landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--poorly drained
Depth to saturation in normal years--more than 25 cm intermittently year round
Flooding--none
Ponding--none
Saturated hydraulic conductivity (Ksat)--moderately high throughout mineral horizons
USE AND VEGETATION:
Use--wildlife habitat, recreation, and subsistence
Potential native vegetation--Alaska cedar, fernleaf goldthread, bunchberry dogwood, dicranum moss, copperbush, splendid feather moss, American skunkcabbage, rusty menziesia, Sitka spruce, Schreber's big red stem moss, rhizomnium moss, strawberryleaf raspberry, sphagnum, western hemlock, mountain hemlock, oval-leaf blueberry, red huckleberry
DISTRIBUTION AND EXTENT: Alexander Archipelago-Gulf of Alaska Coast, Alaska; MLRA 220; moderate 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
*Umbric epipedon--zone from 21 to 150 cm
*Folistic epipedon--zone from the surface to a depth of 21 cm
*Particle-size control section--zone from 46 to 121 cm
National Cooperative Soil Survey
U.S.A.