LOCATION VENETIE AK
Established Series
JDP/NR/TJR
02/2022
VENETIE SERIES
Landscape--alluvial plains
Landform--stream terraces, flood plains
Slope--0 to 5 percent
Parent material--alluvium
Mean annual precipitation--about 255 mm
Mean annual air temperature--about -6 degrees C
Depth class--very deep
Drainage class--somewhat excessively drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--ustic
TAXONOMIC CLASS: Sandy-skeletal, mixed Typic Cryorthents
TYPICAL PEDON: Venetie gravelly fine sandy loam on a woodland terrace with a slope of 3 percent and an elevation of 190 m (The soil was moist throughout when described on July 4, 2012.)
Oe--0 to 4 cm; moderately decomposed plant material; many fine roots and common medium roots; slightly acid (pH 6.5); clear smooth boundary
A--4 to 16 cm; gravelly fine sandy loam; 90 percent light gray (10YR 7/2) dry, grayish brown (10YR 5/2) moist, and 10 percent light yellowish brown (10YR 6/4)dry, dark yellowish brown (10YR 4/4) moist; moderate medium granular structure; soft, very friable; few fine roots and common medium roots; common fine and medium pores; 20 percent gravel; noneffervescent; neutral (pH 7.1); clear smooth boundary
C1--16 to 55 cm; very gravelly loamy sand; light gray (10YR 7/1) dry, gray (10YR 5/1) moist; single grain; loose; common fine roots; few fine and medium pores; 40 percent gravel; noneffervescent; neutral (pH 7.3); gradual wavy boundary
C2--55 to 90 cm; very gravelly fine sand; light gray (10YR 7/1) dry, gray (10YR 5/1) moist; single grain; loose; common fine roots; few fine and medium pores; 40 percent gravel; noneffervescent; neutral (pH 7.3); gradual wavy boundary
C3--90 to 150 cm; very gravelly fine sand; light gray (10YR 7/1) dry, gray (10YR 5/1) moist; single grain; loose; 55 percent gravel; noneffervescent; slightly alkaline (pH 7.7)
TYPE LOCATION: Yukon-Koyukuk Census Area, Alaska; latitude 66.9632222 degrees, longitude -146.6654167 degrees, datum WGS84 (coordinates determined with a GPS)
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--0.5 to 2.5 degrees C
Rock fragment content--35 to 85 percent gravels (by weighted average) in the particle size control section
Oe horizon
Thickness--2 to 10 cm
Reaction--6.0 to 7.5
A horizon
Value--2 to 5 moist, 4 to 7 dry
Chroma--2 to 4 moist
Fine-earth texture--silt loam, very fine sandy loam, loam, sandy loam, fine sandy loam
Rock fragment content--5 to 50 percent
Clay content--0 to 18 percent
Reaction--6.0 to 8.0
Effervescence--none
Thickness--3 to 15 cm
C1, C2, and C3 horizons
Hue--10YR, 2.5Y
Value--4 or 5 moist, 6 or 7 dry
Chroma--1 to 4 moist
Fine-earth texture--fine sandy loam, loamy sand, fine sand to coarse sand
Rock fragment content--20 to 85 percent
Clay content--0 to 10 percent
Reaction--7.0 to 8.5
Effervescence--none to strong
Combined thickness--125 to 145 cm
COMPETING SERIES:
Bearisland--GLACIER BAY SURVEY ONGOING
Chena--these soils contain substantial mica
Drybay--GLACIER BAY SURVEY ONGOING
Eklutna--these soils have greater than 105 frost free days and are presumed to have warmer mean annual soil temperatures; reaction class does not range above neutral in the substratum and there is no calcium carbonates recognized in the series control section
Ekuk--these soils are formed in fluviomarine deposits and do not allow fine sands in the substratum
Lituya--GLACIER BAY SURVEY ONGOING
Muirpoint--GLACIER BAY SURVEY ONGOING
Nataga--these soils have a reaction class that does not range above slightly acid in the A horizon and does not range above neutral in the substratum
Nizina--these soils have fewer than 90 frost free days and are presumed to have colder mean annual soil temperatures
GEOGRAPHIC SETTING:
Elevation--100 to 300 m
Climate--short, warm summers and long, very cold winters
Mean annual precipitation--210 to 310 mm
Mean annual air temperature-- -12 to 0 degrees C
Frost-free period--45 to 97 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Kocacho--aquic conditions within 50 cm (somewhat poorly drained); lower positions on similar landforms
Tlozhavun (gravelly taxadjuncts)--no aquic conditions within 150 cm; similar landforms
Choonjik (gravelly taxadjuncts)--no aquic conditions within 150 cm; calcareous; similar landforms
Yasuda--aquic conditions within 25 cm with frequent ponding; depressions on similar landforms
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--somewhat excessively drained
Saturation in normal years--none
Flooding--none to occasional, brief
Ponding--none
Saturated hydraulic conductivity (Ksat)--high in the surface and high or very high in the substratum
USE AND VEGETATION:
Use--wildlife habitat, subsistence, recreation
Potential natural vegetation--white spruce, quaking aspen, kinnikinnick, purple reedgrass, Pumpelly's brome, false toadflax, flavo lichen, greygreen reindeer lichen, star reindeer lichen, cup lichen
DISTRIBUTION AND EXTENT: Yukon Flats Lowlands, Alaska; MLRA 232; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: WASILLA, ALASKA
SERIES ESTABLISHED: Yukon Flats National Wildlife Refuge, Yukon-Koyukuk Census Area, Alaska; 2020
REMARKS:
Diagnostic horizons and other features in this pedon
*Particle-size control section--zone from 29 to 104 cm
*Ochric epipedon
National Cooperative Soil Survey
U.S.A.