LOCATION KLADNICK WAEstablished Series
TAXONOMIC CLASS: Sandy-skeletal, isotic, frigid Andic Dystroxerepts
TYPICAL PEDON: Kladnick ashy sandy loam, under a coniferous forest on a nearly level terrace at an elevation of 2,300 feet. The soil was moist when described. (Colors are for dry soil unless otherwise stated)
Oe--0 to 1 inch; partially decomposed forest litter, abrupt wavy boundary. (1/2 to 2 inches thick)
A1--1 to 3 inches; brown (10YR 4/3) ashy sandy loam, very dark grayish brown (10YR 3/2) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine, fine roots; NaF pH 10.5; slightly acid (pH 6.4); abrupt wavy boundary. (1 to 5 inches thick)
A2--3 to 9 inches; yellowish brown (10YR 5/4) ashy sandy loam, dark yellowish brown (10YR 3/4) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; common fine, medium roots; 10 percent gravel; NaF pH 12.0; slightly acid (pH 6.2); clear wavy boundary. (6 to 9 inches thick)
Bw1--9 to 15 inches; yellowish brown (10YR 5/4) gravelly ashy sandy loam, dark yellowish brown (10YR 3/4) moist; moderate fine subangular blocky structure; soft, very friable, nonsticky and nonplastic, weakly smeary; common very fine, fine roots; 25 percent gravel and 5 percent cobbles; NaF pH 12.0; moderately acid (pH 6.0); clear wavy boundary. (4 to 7 inches thick)
2Bw2--15 to 24 inches; light yellowish brown (10YR 6/4) very gravelly sandy loam, dark yellowish brown (10YR 3/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky and nonplastic; common very fine, fine roots; 40 percent gravel and 10 percent cobbles; slightly acid (pH 6.2); abrupt wavy boundary. (3 to 9 inches thick)
3C--24 to 60 inches; yellowish brown (10YR 5/4) dark gray (10YR 4/1) brownish yellow (10YR 6/6) extremely gravelly sand, dark yellowish brown (10YR 3/4), dark gray (10YR 4/1), dark yellowish brown (10YR 4/6), moist; single grain; loose; few very fine roots; 50 percent gravel and 20 percent cobbles; slightly acid (pH 6.2).
TYPE LOCATION: Kittitas County, Washington; about 4 miles southeast of Keechelus Lake; 2,000 feet north and 200 feet west of the southeast corner section 36, T. 21 N., R. 12 E.
RANGE IN CHARACTERISTICS: The average annual soil temperature ranges from 45 to 46 degrees F. The soils are usually moist but are dry in all parts of the moisture control section for 45 to 60 consecutive days during summer and fall. Thickness of the solum ranges from 18 to 25 inches. The particle-size control section averages 70 to 90 percent sand in the fine-earth fraction and 45 to 65 percent rock fragments by volume. The upper 7 to 14 inches has an estimated moist bulk density of 0.85 to 1.0 g/cc, volcanic glass content of 30 to 60 percent, acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 1.0 to 2.0 percent, and 15-bar water retention of 5 to 10 percent.
The A1 horizon has value of 4 to 6 dry, 3 or 4 moist, and chroma of 2 or 3 moist. Texture is ashy sandy loam, cobbly ashy fine sandy loam or very stony ashy sandy loam. Reaction is neutral to moderately acid.
The A2 horizon has value of 3 or 4 moist and chroma of 3 or 4, dry or moist. Texture is ashy sandy loam, cobbly ashy fine sandy loam, or very stony ashy sandy loam. Reaction is neutral to moderately acid.
The Bw1 horizon has value of 5 or 6 dry, 3 to 5 moist, chroma 2 to 4 when dry or moist. It is gravelly ashy sandy loam, ashy sandy loam, cobbly ashy fine sandy loam, or cobbly ashy sandy loam. Reaction is neutral or moderately acid.
The 2Bw2 horizon has a value of 5 to 7 dry, 3 to 5 moist, chroma 2 to 4 when dry or moist. It is very gravelly loamy sand, very gravelly sandy loam, very cobbly sandy loam or extremely gravelly loamy sand. Reaction is neutral or moderately acid.
The 3C horizon has hue of 10YR or 2.5Y, value of 4 to 7 dry, 3 to 6 moist, and chroma of 1 to 6 dry or moist. It is extremely gravelly sand, extremely cobbly sand, extremely cobbly loamy sand, or very gravelly loamy sand. Reaction is slightly acid or moderately acid.
COMPETING SERIES: There are no competing series. The Kiehl series has a similar Haploxerepts classification. Kiehl soils are dry for 75 to 90 consecutive days and lack a sandy loam volcanic ash mantle.
GEOGRAPHIC SETTING: Kladnick soils are on outwash terraces, fans and toe slopes. Slopes are 0 to 30 percent. The soils formed in glacial outwash, alluvium and colluvium, with a mantle of volcanic ash. Elevation is 1,800 to 2,600 feet. These soils are in a continental climate with warm, dry summers and cool, moist winters. The mean annual precipitation is 40 to 75 inches. The mean January temperature is about 26 degrees F. and the mean July temperature is about 64 degrees F. The mean annual temperature is 43 to 45 degrees F. The growing season at 28 degrees F is 130 to 175 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Gilpar, Roslyn, and Thetis series. Gilpar and Thetis soils are cryic and have a spodic horizon. Roslyn soils are coarse-loamy.
DRAINAGE AND PERMEABILITY: Well and somewhat excessively drained; very slow to medium runoff; moderately rapid permeability in the upper part and rapid and very rapid in the lower part.
USE AND VEGETATION: These soils are used for timber production, recreation and wildlife habitat. Vegetation is Douglas-fir, grand fir, lodgepole pine, scattered western redcedar and western white pine, with an understory of western brackenfern, pachystima, common snowberry, Oregon-grape, huckleberry, and vine maple.
DISTRIBUTION AND EXTENT: Valleys on the east slopes of the Cascade Mountains in western Kittitas and Chelan Counties, Washington; MLRA 3. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Kittitas County, 1981.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon the zone from 0 to 9 inches
Cambic horizon the zone from 8 to 15 inches
Andic feature the volcanic ash mantle from 0 to 9 inches
Classification revised 10/99 to reflect isotic mineralogy and Dystroxerepts.