LOCATION ANNIECREEK OR
Established Series
Rev. GJW/TDT/CEG
01/2025
ANNIECREEK SERIES
Landscape--intermontane basins
Landform--flood plains, stream terraces
Slope--0 to 4 percent
Parent material--alluvium derived from volcanic material
Mean annual precipitation--about 1275 mm
Mean annual air temperature--about 4 degrees C
Depth class--very deep
Drainage class--somewhat poorly drained
Soil moisture regime--udic
Soil temperature regime--cryic
Soil moisture subclass--aquic
TAXONOMIC CLASS: Ashy, glassy Vitrandic Haplocryolls
TYPICAL PEDON: Anniecreek ashy fine sandy loam on a forested stream terrace
Oi--0 to 10 cm; slightly decomposed needle mat
A1--10 to 30 cm; ashy fine sandy loam, dark grayish brown (2.5Y 4/2) dry, very dark grayish brown (10YR 3/2) moist; weak medium granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine roots; many very fine irregular pores; about 5 percent pumice paragravel; slightly acid (pH 6.4); clear smooth boundary
2A2--30 to 61 cm; very gravelly ashy coarse sand, dark gray (10YR 4/1) dry, very dark gray (10YR 3/1) moist; single grain; loose, nonsticky and nonplastic; many very fine irregular pores; about 10 percent pumice paragravel and 40 percent gravel; neutral (pH 7.0); abrupt smooth boundary
3Ab--61 to 81 cm; stratified ashy fine sand and ashy sand, grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) dry, dark grayish brown (10YR 4/2) and very dark gray (10YR 3/1) moist; massive; soft, very friable, nonsticky and slightly plastic; few very fine roots; few very fine tubular pores; many fine prominent soft iron masses, strong brown (7.5YR 4/6) moist; many fine prominent soft manganese masses, black (10YR 2/1) moist; about 1 percent gravel; neutral (pH 6.6); clear smooth boundary
4Bg1--81 to 140 cm; ashy fine sand, dark gray (2.5Y 4/1) dry, black (N 2.5/0) moist; massive; soft, very friable, nonsticky and nonplastic; many very fine irregular pores; about 5 percent gravel; moderately acid (pH 5.6); clear smooth boundary
5Bg2--140 to 180 cm; very gravelly ashy coarse sand, variegated dry, black (N 2.5/0) moist; single grain; loose, nonsticky and nonplastic; many very fine irregular pores; many coarse distinct soft iron masses, strong brown (7.5YR 4/6) moist; about 40 percent gravel; neutral (pH 6.8)
TYPE LOCATION: Klamath County, Oregon; sec. 32, T. 31 S., R. 7 E., Willamette Meridian; Sun Pass, Oregon USGS quadrangle; latitude 42.8462219 degrees north, longitude 121.9150085 degrees west, datum WGS84
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--4 to 6 degrees C
Moisture control section--30 to 90 cm; udic regime bordering on aquic; usually moist, but dry in all parts for 30 to 45 consecutive days following the summer solstice; portions of the control section are endosaturated part of the year, with the highest water tables occurring in April through June; soils are not sufficiently saturated the remainder of the time to meet criteria for typic aquic moisture regime
Thickness of mollic epipedon--50 to 90 cm
Depth to bedrock--greater than 150 cm
Depth to redoximorphic features and aquic conditions--50 to 90 cm
Depth to high water table--less than 150 cm throughout the year; water table is highest January to June
Organic matter--decreases irregularly with depth
Particle-size control section
*Clay content--0 to 15 percent
*Rock fragment content--10 to 35 percent
*Pararock fragment content--0 to 20 percent
*Total rock and pararock fragment content--10 to 35 percent
Estimated properties, particle size control section:
*Ammonium oxalate extractable Al plus 1/2Fe--0.2 to 0.4 percent *P retention--10 to 25 percent
*Volcanic glass content--70 to 100 percent
*1/3-bar bulk density--0.7 to 1.0 g/cm3
*1500 kPa water (air-dried samples)--5 to 12 percent (air-dried samples), 0 to 7 percent (field moist estimate)
*Some pedons have individual horizons with andic soil properties.
A and 2A horizons
Hue--10YR or 2.5Y moist or dry
Value--2 or 3 moist, 3 to 5 dry
Chroma--1 or 2 moist, 1 to 3 dry
Fine-earth texture--ashy fine sandy loam, ashy loamy sand, ashy loamy coarse sand, ashy sand, ashy coarse sand
Clay content--0 to 10 percent
Pararock fragment content--0 to 20 percent
Rock fragment content--0 to 40 percent
Total rock and pararock fragment content--0 to 50 percent
Reaction--slightly acid to neutral (pH 6.1 to 7.3)Thickness--25 to 60 cm
3Ab horizon
Hue--10YR or 7.5YR moist or dry
Value--2 to 4 moist, 4 or 5 dry
Chroma--1 to 3 moist or dry
Fine-earth texture--variable including medial very fine sandy loam, ashy loamy coarse sand, ashy sand, ashy fine sand
Clay content--0 to 10 percent
Pararock fragment content--0 to 15 percent
Rock fragment content--0 to 5 percent
Total rock and pararock fragment content--0 to 15 percent
Reaction--neutral (pH 6.6 to 7.3)
Thickness--10 to 25 cm
AC horizon (when present)
Hue--10YR or 2.5Y moist or dry
Value--2 to 4 moist, 4 to 6 dry
Chroma--1 to 3 moist or dry
Fine-earth texture--ashy fine sandy loam, ashy loamy sand, ashy sand
Clay content--0 to 10 percent
Pararock fragment content--0 to 30 percent
Rock fragment content--0 to 30 percent
Total rock and pararock fragment content--0 to 50 percent
Reaction--moderately acid to slightly acid (pH 5.6 to 6.5)
Thickness--0 to 60 cm
4Bg and 5Bg horizons
Hue--neutral or 2.5Y moist or dry
Value--2.5 to 4 moist, 4 or 5 dry
Chroma--0 to 3 moist, 2 to 4 dry
Fine-earth texture--ashy fine sand, ashy loamy sand, ashy coarse sand
Clay content--0 to 5 percent
Pararock fragment content--0 to 20 percent pumice paragravel
Rock fragment content--0 to 70 percent
Total rock and pararock fragment content--0 to 70 percent
Reaction--moderately acid to neutral (pH 5.6 to 7.3)
COMPETING SERIES:
Bigbutte--50 to 100 cm to bedrock (moderately deep); unsaturated conditions year-round (well drained; lacks Bg horizons); typic ustic soil moisture regime
Bodiecreek--aquic conditions below 100 cm depth (moderately well drained); xeric soil moisture regime
Brownsbowl--xeric moisture regime that borders on aridic; 100 to 117 cm thick mollic epipedon
Cadero--50 to 100 cm to paralithic contact (moderately deep); xeric soil moisture regime
Hallet--xeric soil moisture regime; regular decrease in organic matter with depth
Medrick--unsaturated conditions year-round (well drained); ustic soil moisture regime that borders on aridic; 18 to 25 cm thick mollic epipedon
Pannfield--75 to 100 cm to paralithic contact (moderately deep); unsaturated conditions year-round (well drained); 18 to 25 cm thick mollic epipedon; ustic soil moisture regime that borders on aridic
GEOGRAPHIC SETTING:
Elevation--1200 to 1850 m
Climate--cool, dry summers and cold, wet winters
Mean annual air temperature--3 to 7 degrees C
Mean annual precipitation--470 to 1600 mm
Frost-free period--5 to 50 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Collier--ashy; on adjacent ash flows
Castlecrest--ashy; on adjacent ash flows
Umak--ashy-pumiceous; on adjacent ash flows
Kyotesue--medial-skeletal; on moraines in mountain valleys
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--somewhat poorly drained
Saturated hydraulic conductivity (Ksat)--moderately high to very high in the 3Ab horizon; high to very high all other horizons
Flooding--occasional, brief; March to June
USE AND VEGETATION:
Use--wildlife habitat; recreation
Vegetation--Engleman spruce, mountain alder, lodgepole pine, sedges, shrubs
DISTRIBUTION AND EXTENT: Cascade Mountains, Eastern Slope, Oregon; MLRA 6; small extent
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Crater Lake National Park, Klamath County, Oregon; 2001
REMARKS:
Diagnostic horizons and features in this pedon
*Particle-size control section--the zone from 35 to 110 cm
*Mollic epipedon--A1, 2A2, 3Ab horizons; base saturation is 85 to 95 percent
*Vitrandic subgroup criteria--all horizons
*Fluvaquentic subgroup criteria--irregular decrease in organic matter between 35 and 135 cm; redox concentrations and aquic conditions from 61 to 81 cm*Volcanic glass--all horizons
*Aquic conditions--3Ab, 4Bg1, 5Bg2 horizons
*Redoximorphic concentrations--3Ab, 5Bg2 horizons
Volcanic ash is from Mt. Mazama.
ADDITIONAL DATA:
NASIS SITE ID--01-GJW-02
NASIS PEDON ID--01OR682007
Kellogg Soil Survey Laboratory (KSSL) data pedon ID--03OR035009
National Cooperative Soil Survey
U.S.A.