LOCATION CASEYCREEK ID
Established Series
Rev. BDG/JAL/EMM
06/2013
CASEYCREEK SERIES
The Caseycreek series consists of very deep, moderately well drained soils formed in mixed alluvium with a thin mantle of mixed volcanic ash. These soils are on stream terraces. Saturated hydraulic conductivity is moderately high. Slopes are 2 to 15 percent. Mean annual precipitation is about 38 inches, and mean annual temperature is about 42 degrees F.
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Vitrandic Eutrudepts
TYPICAL PEDON: Caseycreek ashy loam, forested, on a 4 percent slope at 2,870 feet elevation with a southwest aspect. When described on May 6, 1999, the soil was moist to 34 inches with an apparent water table at 34 inches. (Colors are for dry soil unless otherwise noted.)
Oi--0 to 1 inch; partially decomposed needles, leaves, and twigs. (1 to 1.5 inches thick)
A--1 to 5 inches; light brownish gray (10YR 6/2) ashy loam, dark brown (10YR 3/3) moist; weak fine subangular blocky structure parting to weak very fine and fine granular; slightly hard, friable, nonsticky, slightly plastic; few medium and coarse and many very fine and fine roots; few very fine and fine tubular pores; 15 percent fine mica flakes; slightly acid (pH 6.5); abrupt smooth boundary. (2 to 13 inches thick)
AB--5 to 8 inches; pale brown (10YR 6/3) ashy loam, dark yellowish brown (10YR 3/4) moist; weak fine and medium subangular blocky structure; slightly hard, friable, nonsticky, slightly plastic; many very fine and fine roots on faces of peds, common medium and coarse roots; few very fine and fine tubular pores; 20 percent fine mica flakes; moderately acid (pH 5.7); clear smooth boundary. (0 to 10 inches thick)
Bw1--8 to 17 inches; light yellowish brown (10YR 6/4) loam, yellowish brown (10YR 5/4) moist; weak fine and medium subangular blocky structure; moderately hard, friable, nonsticky, slightly plastic; many very fine and fine roots on faces of peds, common medium and coarse roots; few very fine and fine tubular pores; 2 percent faint skeletans on ped faces; 20 percent fine mica flakes; strongly acid (pH 5.1); clear smooth boundary.
Bw2--17 to 23 inches; very pale brown (10YR 7/3) loam, brown (10YR 5/3) moist; weak fine and medium subangular blocky structure; moderately hard, friable, nonsticky, nonplastic; many very fine and fine roots on faces of peds, common medium and coarse roots; few very fine tubular pores; 2 percent faint skeletans on ped faces; 20 percent fine mica flakes; very strongly acid (pH 5.0); abrupt wavy boundary. (Thickness of the Bw horizons is 9 to 36 inches.)
C1--23 to 35 inches; light yellowish brown (10YR 6/4) coarse sandy loam, yellowish brown (10YR 5/4) moist; massive; loose, nonsticky, nonplastic; common very fine and fine roots; many very fine interstitial pores; 8 percent fine mica flakes; strongly acid (pH 5.2); abrupt smooth boundary.
C2--35 to 49 inches; 80 percent very pale brown (10YR 7/4) sandy loam, dark yellowish brown (10YR 4/4) moist and 20 percent pale brown (10YR 6/3) coarse sandy loam, brown (10YR 5/3) moist; massive; moderately hard, very friable, nonsticky, nonplastic; common very fine and fine roots; many very fine interstitial pores; 2 percent fine mica flakes; strongly acid (pH 5.2); gradual smooth boundary.
C3--49 to 55 inches; light yellowish brown (10YR 6/4) coarse sand, dark yellowish brown (10YR 4/6) moist; massive; slightly hard, loose, nonsticky, nonplastic; few very fine and fine roots; many very fine interstitial pores; 2 percent fine mica flakes; strongly acid (pH 5.3); gradual smooth boundary.
C4--55 to 67 inches; 90 percent light yellowish brown (10YR 6/4) coarse sand, brown (10YR 5/3) moist and 10 percent light gray (10YR 7/2) loamy sand, brown (10YR 4/3) moist; massive; moderately hard, very friable, nonsticky, nonplastic; many very fine interstitial pores; 2 percent fine mica flakes; strongly acid (pH 5.3); abrupt smooth boundary.
C5--67 to 72 inches; 90 percent pale yellow (2.5Y 7/3) loam, brown (10YR 4/3) moist and 10 percent light yellowish brown (10YR 6/4) loamy sand, brown (10YR 5/3) moist; massive; moderately hard, friable, nonsticky, nonplastic; common very fine interstitial pores; 15 percent fine mica flakes; strongly acid (pH 5.5).
TYPE LOCATION: Latah County, Idaho; about 2 miles east and 5 miles south of Helmer; about 1,400 feet north and 1,400 feet east of the southwest corner of sec. 11 T. 39 N., R. 1W.; Latitude: 46 degrees, 44 minutes, 06 seconds North; Longitude: 116 degrees, 25 minutes, 46 seconds West; USGS Park Quadrangle.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature: 43 to 46 degrees F; frigid temperature regime
Moisture control section: Usually moist year around; not dry for 45 consecutive days during June to October; udic moisture regime
Note: Data for moist bulk density, volcanic glass content, and acid-oxalate are estimates only.
A horizon
Value: 5 or 6 dry; 2 or 3 moist
Chroma: 2 or 3
Texture: ashy loam, ashy silt loam, or ashy sandy loam
Clay content: 8 to 20 percent
Moist bulk density: 1.10 to 1.55 g/cm3
Volcanic glass content: 5 to 20 percent
Acid-oxalate extractable Al + Fe: 0.4 to 0.9 percent
Reaction: 5.1 to 6.5
AB and BA horizons (present in some pedons)
Value: 3 or 4 moist
Chroma: 2 or 3 dry
Texture: ashy loam ashy silt loam or sandy loam
Clay content: 18 to 21 percent
Moist bulk density: 1.10 to 1.60 g/cm3
Volcanic glass content: 5 to 15 percent
Acid-oxalate extractable Al + Fe: 0.4 to 0.5 percent
Reaction: 5.0 to 5.7
Bw horizons
Hue: 10YR, 2.5Y, or 5Y dry
Value: 5 to 7 dry; 3 to 6 moist
Chroma: 1 to 4 dry; 2 to 4 or 6 moist
Texture: Loam, silt loam, or sandy loam
Clay content: 10 to 26 percent
Content of rock fragments: 0 to 35 percent--0 to 15 percent cobbles; 0 to 30 percent gravel
Reaction: 5.0 to 6.4
BC horizons (present in some pedons)
Hue: 10YR or 7.5YR moist
Value: 5 or 6 moist
Chroma: 2 to 4 or 6 moist
Texture: Sandy loam, sandy clay loam, or loam
Clay content: 13 to 22 percent
Content of rock fragments: 1 to 10 percent--0 to 5 percent cobbles; 1 to 10 percent gravel
Reaction: 5.0 to 5.5
C horizons
Hue: 2.5Y or 10YR dry; 7.5YR, 10YR, or 2.5Y moist
Value: 6 or 7 dry; 4 to 6 moist
Chroma: 2 to 4 dry; 1 to 4 or 6 moist
Texture: Loam, silt loam, sandy loam, coarse sandy loam, loamy sand, loamy coarse sand, or coarse sand
Clay content: 2 to 24 percent
Content of rock fragments: 0 to 60 percent--0 to 50 percent cobbles; 0 to 50 percent gravel
Reaction: 5.0 to 5.5
COMPETING SERIES:
Tamarack (MT) - has 2E and Bt horizons containing lamellae.
GEOGRAPHIC SETTING:
Landform: Stream terraces
Elevation: 1,700 to 3,350 feet (518 to 1021 meters)
Slope: 2 to 15 percent
Parent material: Mixed alluvium with a thin mantle of mixed volcanic ash
Mean annual precipitation: 25 to 43 inches (635 to 1092 mm)
Mean annual air temperature: 38 to 46 degrees F
Frost-free period: 50 to 120 days
GEOGRAPHICALLY ASSOCIATED SOILS:
Carlinton (ID) has fragipans; occurs on hillslopes on plateaus.
Poorman (ID+UT) is paramicaceous; occurs on mountain side slopes.
Reggear (ID) has fragipans; occurs on hillslopes on plateaus.
Uvi (ID) has a xeric moisture regime; occurs on south facing mountain side slopes.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained;moderately high saturated hydraulic conductivity; apparent water table 27 to 40 inches from November to July
USE AND VEGETATION: Caseycreek soils are used mainly for timber production, livestock grazing, wildlife habitat, watershed, and recreation. The potential native vegetation is mainly western red cedar, grand fir, western larch, Douglas-fir, Engelmann spruce, and lodgepole pine, with an understory of queencup beadlily, northern twinflower, goldthread, bunchberry dogwood, piper anemone, and huckleberry.
DISTRIBUTION AND EXTENT: Caseycreek soils are not extensive in north-central Idaho. MLRA 43A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Clearwater County, Idaho, 2003
REMARKS:
Diagnostic horizons and other features recognized in this pedon:
Ochric epipedon - from the mineral soil surface to 7 inches (A, AB horizons)
Vitrandic feature - from the mineral soil surface to 7 inches (A, AB horizons)
Cambic horizon - from 7 to 22 inches (Bw horizons)
Particle-size control section - from 10 to 40 inches (part of the Bw1, Bw2, C1, and part of the C2 horizons)
National Cooperative Soil Survey
U.S.A.