LOCATION KLUTUK AK
Established Series
SAS/TJR/SJN
05/2022
KLUTUK SERIES
The Klutuk series consists of very deep, well drained soils formed in eolian deposits on rises or talfs of plains and on hills. Slopes range from 0 to 43 percent. Mean annual precipitation is about 710 millimeters and the mean annual air temperature is about 0.5 degrees C.
TAXONOMIC CLASS: Coarse-loamy, isotic Andic Humicryepts
TYPICAL PEDON: Klutuk highly organic silt loam, located on a rise of a plain with a slope of 1 percent and elevation of 54 meters; when described on August 2nd, 2006 the soil was moist throughout (Colors are for moist soil unless otherwise noted)
Oe--0 to 5 centimeters; moderately decomposed plant material; many very fine and fine roots, many medium roots, and few coarse roots; extremely acid, pH 4.0; clear smooth boundary
A--5 to 12 centimeters; black (7.5YR 2.5/1) highly organic silt loam; 20 percent sand; 75 percent silt; 5 percent clay; weak medium subangular blocky structure; very friable, nonsticky, nonplastic; many very fine and fine roots, common medium roots, and few coarse roots; extremely acid, pH 4.2; clear wavy boundary
Bw1--12 to 20 centimeters; dark brown (7.5YR 3/3) medial silt loam; 30 percent sand; 65 percent silt; 5 percent clay; weak medium subangular blocky structure; friable, nonsticky, nonplastic; many very fine and fine roots, common medium roots, and few coarse roots; very strongly acid, pH 4.6; clear wavy boundary
Bw2--20 to 53 centimeters; very dark grayish brown (10YR 3/2) silt loam; 35 percent sand; 61 percent silt; 4 percent clay; weak coarse subangular blocky structure; friable, nonsticky, nonplastic; common very fine and fine roots, common medium roots, and few coarse roots; moderately acid, pH 5.6; clear wavy boundary
BC--53 to 130 centimeters; brown (10YR 4/3) very fine sandy loam; 55 percent sand; 42 percent silt; 3 percent clay; weak medium subangular blocky structure; nonsticky, nonplastic; common very fine and fine roots, few medium roots, and few coarse roots; moderately acid, pH 5.8; gradual wavy boundary
C--130 to 183 centimeters; dark grayish brown (10YR 4/2) very fine sandy loam; 55 percent sand; 42 percent silt; 3 percent clay; massive; nonsticky, nonplastic; few very fine and fine roots, few medium roots, and few coarse roots; moderately acid, pH 5.8
TYPE LOCATION: Dillingham Census Area, Alaska. 2 kilometers west northwest of the Village of Ekwok, Alaska; 59.3538889 degrees north latitude, 157.5166667 degrees west longitude.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 0.5 to 1.7 degrees C (cryic soil temperature regime)
Soil moisture control section - Dry less than 45 consecutive days from June to October (udic soil moisture regime)
Thickness of umbric epipedon - 22 to 58 cm
Thickness of andic soil properties - 8 to 17 cm
All mineral horizons-
Reaction - 4.2 to 5.8
Volcanic glass content - 0 to 15 percent
Ammonium oxalate extractable AL + 1/2 Fe - 0.30 to 2.5 percent
Moist bulk density - 0.80 to 1.50 g/cc
Particle-size control section-
Clay content - 3 to 8 percent
Rock fragments - 0 to 4 percent
Oe horizon
Thickness - 2 to 13 cm
A horizon (or A or E horizons)
Hue - 7.5YR or 10YR
Value - 2 or 2.5
Chroma - 1 or 2
Fine earth texture - Highly organic silt loam or highly organic silt
Clay content - 3 to 8 percent
Reaction - 3.2 to 5.2
Rock fragments - 0 to 1 percent gravels
Thickness - 7 to 30 cm
Bw1 horizon
Hue - 7.5YR or 10YR
Value - 2 to 4
Chroma - 1 to 4
Fine earth texture - Medial silt loam or medial very fine sandy loam
Clay content - 3 to 8 percent
Reaction - 4.6 to 5.2
Rock fragments - 0 percent
Thickness - 10 to 40 cm
Bw2 horizon
Hue - 7.5YR to 10YR
Value - 3 to 5
Chroma - 2 to 6
Fine earth texture - Silt loam or very fine sandy loam
Clay content - 3 to 8 percent
Reaction - 4.9 to 5.6
Rock fragments - 0 to 4 percent gravels
Thickness - 33 to 73 cm
BC horizon
Hue - 10YR or 2.5Y
Value - 3 or 4
Chroma - 2 or 3
Fine earth texture - Silt loam or very fine sandy loam
Clay content - 3 to 6 percent
Reaction - 5.3 to 5.8
Rock fragments - 0 percent
Thickness - 38 to 77 cm
C horizon
Hue - 10YR or 2.5Y
Value - 3 to 5
Chroma - 2 to 6
Fine earth texture - Loamy very fine sand, fine sandy loam, very fine sandy loam, or sandy loam
Clay content - 3 to 6 percent
Reaction - 5.5 to 5.8
Rock fragments - 0 to 20 percent total; 0 to 3 percent fine gravels and 0 to 17 percent medium and coarse gravels
Thickness - 53 to 108 cm
COMPETING SERIES: These are the
Frizzelcreek soils. Frizzelcreek soils are formed in colluvium from basalt on upper backslopes of mountains. Slopes range from 30 to 90 percent.
GEOGRAPHIC SETTING:
Parent material - Herbaceous organic material over coarse-loamy eolian deposits
Landform - Rises on plains, plain talfs, or hills
Slope - 0 to 43 percent
Elevation - 8 to 116 meters
Climate - Cool summers; cold winters, August and September are the wettest months
Mean annual precipitation - 605 to 875 mm
Mean annual air temperature - 0.2 to 0.7 degrees C
Frost free duration - 85 to 140 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Ekwok - Spodic horizon; similar landform position
Ekvik - Colluvium parent material; steep slopes on bluffs.
Unguiq - Aquic conditions and alluvium parent material; drainageways
Pellernarquq - Aquic conditions; plain dips and talfs
Kumla - Permafrost; plain talfs
Kemuk - Aquic conditions; plain talfs
Egtuk - Water table moderately deep, plain talfs
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: (Ksat)
Drainage class - Well drained
Saturation in normal years - Below 183 cm
Ksat - Moderately high in the A and Bw horizons, moderately high to high in the BC and C horizons
USE AND VEGETATION:
Use - Wildlife habitat and berry picking
Potential natural vegetation - Western maritime ericaceous scrubland composed of Labrador tea, dwarf birch, bog blueberry, lingonberry, crowberry, sedges, and lichens
DISTRIBUTION AND EXTENT: Bristol Bay Lowlands, Alaska; MLRA 236; moderate extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA
SERIES ESTABLISHED: Nushagak Mulchatna Watershed, Dillingham Census Area, Alaska, 2019
REMARKS:
Particle-size control section - 30 to 105 cm
Umbric epipedon - A and Bw horizons
Soil moisture regime - Udic
Andic soil properties - Bw1 horizon
Volcanic Glass - Bw1 horizon
National Cooperative Soil Survey
U.S.A.