LOCATION WINOPEE ORTentative Series
TAXONOMIC CLASS: Ashy over loamy, amorphic over isotic Andic Haplocryods
TYPICAL PEDON: Winopee loamy sand, woodland. (Colors are for moist soil unless otherwise noted.)
01--2 to 1 1/2 inches; needles and twigs.
02--1 1/2 inches to 0; decomposed organic materials; abrupt smooth boundary.
A2--0 to 1 1/2 inches; gray (N 5/ ) loamy sand, light gray (N 7/ ) dry; weak very fine granular structure; very soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine irregular pores; strongly acid (pH 5.4); abrupt wavy boundary. (1 to 2 inches thick)
Bir--1 1/2 to 3 inches; dark brown (7.5YR 4/4) sand, strong brown (7.5YR 5/6) dry; weak very fine granular structure; very soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine irregular pores; slightly acid (pH 6.2); clear smooth boundary. (2 to 6 inches thick)
C1--3 to 7 inches; brown (10YR 5/3) sand, pale brown (10YR 6/3) dry; massive; very soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine irregular pores; slightly acid (pH 6.2); gradual wavy boundary. (3 to 5 inches thick)
C2--7 to 18 inches; brownish yellow (10YR 6/6) gravelly coarse sand, pale brown (10YR 6/3) dry; massive; very soft, very friable, nonsticky, nonplastic; many very fine roots; many very fine irregular pores; 15 percent pumice fragments 2mm-5mm, 5 percent 5mm-10mm; slightly acid (pH 6.2); gradual wavy boundary. (6 to 12 inches thick)
C3--18 to 22 inches; pale brown (10YR 6/3) sand, very pale brown (10YR 7/3) dry; single grained; loose, nonsticky, nonplastic; many very fine roots; many very fine irregular pores; slightly acid (pH 6.2); abrupt wavy boundary. (0 to 5 inches thick)
IIB2b--22 to 45 inches; dark brown (7.5YR 4/4) gravelly loam, brown (7.5YR 5/4) dry; moderate medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; few very fine roots; common very fine irregular pores; 10 percent rock fragments 2mm-5mm, 20 percent 5mm-3 inches, 15 percent cobbles; neutral (pH 6.5). (15 to 30 inches thick)
IIICb--45 to 50 inches; very cobbly glacial till; massive; very hard, firm, nonplastic, nonsticky.
TYPE LOCATION: Deschutes County, Oregon; SW1/4 SW1/4 section 18, T. 21 S., R. 7 E.
RANGE IN CHARACTERISTICS: The soils are usually moist and dry for less than 60 consecutive days between 7 and 20 inches. The mean annual soil temperature is 38 to 42 degrees F. Depth to glacial till is 40 to 60 inches.
The A2 horizon has hue of 2.5Y, 10YR or neutral, value of 5 moist and 6 or 7 dry, and chroma of 0 through 2 moist and dry. It is loamy sand or sand.
The Bir horizon has hue of 7.5YR or 10YR, value of 4 moist, 4 or 5 dry, and chroma of 3 or 4 moist and 4 through 6 dry. It is loamy sand or sand.
The C horizon has value of 5 or 6 moist, 6 or 7 dry, and chroma of 2 to 6 moist and dry. Pumice rock fragments range from 10 to 20 percent 2mm to 5mm in diameter and 5 to 10 percent 5 mm to 3 inches in diameter.
The IIB2b horizon has hue of 7.5YR or 5YR, value of 4 or 5 moist, 5 through 7 dry, and chroma of 3 or 4 moist and dry. Rock fragments range from 5 to 15 percent 2 mm to 5 mm in diameter, 15 to 20 percent 5 mm to 3 inches in diameter and 10 to 15 percent cobbles.
COMPETING SERIES: These are the Moolack soils. Moolack soils lack buried B horizons.
GEOGRAPHIC SETTING: The Winopee soils have nearly level to very steep slopes at elevations of 5,500 to 7,500 feet. The soil formed in ash superimposed over gravelly loamy colluvium and glacial till. Mean annual precipitation is 40 to 80 inches. The mean annual temperature ranges from 36 to 40 degrees F., the mean January temperature is about 20 degrees F., and the mean July temperature is about 55 degrees F. The frost-free period is 0 to 30 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Moolack soils.
DRAINAGE AND PERMEABILITY: Somewhat excessively drained; slow to rapid runoff; rapid permeability to the IIB2b horizon and moderate below. USE AND VEGETATION: Principal use is timber production. Other uses are recreation and wildlife. Vegetation consists of hemlock, white pine, lodgepole pine and spruce.
DISTRIBUTION AND EXTENT: Cascade Mountains of Oregon. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Deschutes County, Oregon, 1972.
REMARKS: The Winopee series would have been placed in the Podzols.
NSTH 17, RECLASSIFICATION ONLY, 3/95