LOCATION CRANBERRYCREEK AK
Established Series
SAS/MPR
02/2022
CRANBERRYCREEK SERIES
Landscape--plains, hills
Landform--rises, hillslopes
Slope--0 to 18 percent
Parent material--loess with drift in lower part of some pedons
Mean annual precipitation--about 900 mm
Mean annual air temperature--about 0 degrees C
Depth class--very deep
Drainage class--well drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--typic
TAXONOMIC CLASS: Coarse-loamy, isotic Spodic Dystrocryepts
TYPICAL PEDON: Cranberrycreek silt loam on a northwest-facing, convex rise of a plain, on a slope of 3 percent at an elevation of 85 m (The soil was moist throughout when described on September 14, 2010.)
Oe--0 to 3 cm; moderately decomposed plant material; common very fine to medium roots; extremely acid (pH 3.6); clear wavy boundary
A--3 to 10 cm; silt loam, brown (7.5YR 4/2) dry, very dark brown (7.5YR 2.5/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; extremely acid (pH 4.0); clear wavy boundary
Bhs--10 to 15 cm; medial silt loam, reddish brown (5YR 5/4) dry, dark reddish brown (5YR 3/4) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; extremely acid (pH 4.0); abrupt wavy boundary
Bw/Ajj--15 to 66 cm; silt loam, matrix color 75 percent pale yellow (2.5Y 7/3) dry, light olive brown (2.5Y 5/3) moist, 20 percent pale brown (10YR 6/3) dry, brown (10YR 4/3) moist, and 5 percent grayish brown (10YR 5/2) dry, very dark grayish brown (10YR 3/2) moist; weak medium granular structure; slightly hard, friable, nonsticky and nonplastic; common very fine and fine roots; 3 percent medium masses of oxidized iron, strong brown (7.5YR 4/6) moist, clear boundaries; very strongly acid (pH 4.6); clear wavy boundary
BC--66 to 160 cm; very fine sandy loam, pale yellow (2.5Y 7/3) dry, light olive brown (2.5Y 5/3) moist; weak medium granular structure; slightly hard, friable, nonsticky and nonplastic; 15 percent medium masses of oxidized iron, dark yellowish brown (10YR 4/6) moist, clear boundaries; very strongly acid (pH 4.6); gradual wavy boundary
C--160 to 180 cm; silt loam, pale yellow (2.5Y 7/3) dry, light olive brown (2.5Y 5/3) dry; massive; slightly hard, friable, nonsticky and nonplastic; 10 percent medium masses of oxidized iron, light olive brown (2.5Y 5/6) moist, clear boundaries; very strongly acid (pH 4.7)
TYPE LOCATION: Dillingham Census Area, Alaska, about 95 km northeast of the city of Dillingham; latitude 59.6775000 degrees north, longitude 157.3966667 degrees west, datum WGS 84 (coordinates determined with a GPS)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0 to 2 degrees C
Soil moisture control section--dry less than 45 consecutive days in June through October (udic moisture regime)
Particle-size control section
*Clay content--1 to 10 percent
*Sand content--15 to 70 percent
*Total rock fragment content--0 to 25 percent gravel
*Sodium fluoride pH--8.4 to 11.6
*Ratio of 1500 kPa water to measured clay--0.6 to 6.0
Oe horizon
Thickness--2 to 10 cm
A horizon
Hue--7.5YR, 10YR
Value--2 or 2.5 moist, 4 or 5 dry
Chroma--1 or 2 moist
Clay content--2 to 10 percent
Reaction--3.7 to 5.0
Bulk density--0.45 to 0.9 g/cm3
Ammonium oxalate Al plus 1/2 Fe--0.1 to 1.0 percent
Volcanic glass content--2 to 10 percent
Thickness--2 to 15 cm
Bhs horizon (or Bs horizon)
Hue--5YR, 7.5YR
Value--2.5 to 4 moist, 4 to 6 dry
Chroma--1 to 4 moist
Fine-earth texture--medial silt loam, medial very fine sandy loam
Clay content--2 to 10 percent
Reaction--4.0 to 5.2
Gravel content--0 to 10 percent
Bulk density--0.5 to 0.9 g/cm3
Phosphorous retention--50 to 100 percent
Volcanic glass content--5 to 30 percent
Ammonium oxalate Al plus 1/2 Fe--0.4 to 2.0 percent
Thickness--5 to 14 cm
Bw/Ajj horizon
Hue--7.5YR, 10YR, 2.5Y
Value--2 to 4 moist, 4 to 6 dry
Chroma--2 or 3 moist
Fine-earth texture--very fine sandy loam, silt loam
Clay content--2 to 10 percent
Reaction--3.7 to 5.5
Gravel content--0 to 10 percent
Sodium fluoride pH--8.4 to 11.6
Ratio of 1500 kPa water to measured clay--0.6 to 6.0
Thickness--25 to 100 cm
BC horizon (or 2BC horizon)
Hue--10YR, 2.5Y
Value--4 or 5 moist, 6 or 7 dry
Chroma--3 or 4 moist
Fine-earth texture--very fine sandy loam, sandy loam, silt loam
Clay content--2 to 10 percent
Reaction--4.6 to 5.6
Gravel content--0 to 25 percent
Sodium fluoride pH--8.4 to 11.6
Ratio of 1500 kPa water to measured clay--0.6 to 6.0
Thickness--25 to 100 cm
C horizon (or 2C horizon)
Hue--10YR, 2.5Y
Value--4 or 5 moist, 6 or 7 dry
Chroma--3 or 4 moist
Fine-earth texture--sandy loam, silt loam, fine sandy loam
Clay content--1 to 10 percent
Reaction--4.7 to 5.6
Gravel content--0 to 40 percent
Sodium fluoride pH--8.4 to 11.6
Ratio of 1500 kPa water to measured clay--0.6 to 6.0
Thickness--more than 10 cm
COMPETING SERIES:
Lewispoint--no horizons that have andic soil properties; flood plains
GEOGRAPHIC SETTING:
Elevation--0 to 650 m
Climate--warm, moist summers; cold, moist winters
Mean annual precipitation--530 to 1600 mm
Mean annual air temperature-- -2.6 to 1.1 degrees C
Frost-free period--80 to 140 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Sharp--more than 35 percent coarse fragments in particle size control section; no cryoturbation; deep to lithic contact; hillslopes and mountain slopes
Stuyahok--more than 35 percent coarse fragments in particle size control section; no cryoturbation; deep to lithic contact; hillslopes and mountain slopes
Tikchik--more than 35 percent coarse fragments in particle size control section; umbric epipedon; hillslopes
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--well drained
Saturated hydraulic conductivity (Ksat)--moderately high or high throughout the profile
USE AND VEGETATION:
Use--wildlife habitat, recreation, subsistence
Potential natural vegetation--alpine bearberry, dwarf birch, Bigelow's sedge, variegated sedge, black crowberry, marsh Labrador tea, bog blueberry, lingonberry
DISTRIBUTION AND EXTENT: Bristol Bay Lowlands, Alaska; MLRA 236; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA
SERIES ESTABLISHED: Togiak National Wildlife Refuge-Ahklun Mountains Area, Dillingham Census Area, Alaska; 2019
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 28 to 103 cm
*Ochric epipedon
*Cambic horizon--Bhs, Bw/Ajj, and BC horizons
*Cryoturbation--Bw/Ajj horizon
*Andic soil properties--Bhs horizon
*Redoximorphic iron concentrations--Bw/Ajj, 2BC, and 2C horizons
National Cooperative Soil Survey
U.S.A.