LOCATION DIVERS OR+IDEstablished Series
TAXONOMIC CLASS: Medial-skeletal, amorphic Typic Haplocryands
TYPICAL PEDON: Divers gravelly loam, forested. (Colors are for moist soil unless otherwise noted.)
Oi--0 to 1 inch; needles, leaves and twigs.
A--1 to 5 inches; dark brown (7.5YR 3/4) gravelly loam, brown (7.5YR 5/4) dry; moderate very fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many roots; many very fine irregular pores; 25 percent gravel; moderately acid (pH 6.0); gradual smooth boundary. (2 to 6 inches thick)
BA--5 to 14 inches; dark brown (7.5YR 3/4) gravelly loam, brown (7.5YR 5/4) dry; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine tubular pores; many roots; 25 percent gravel; slightly acid (pH 6.4); clear wavy boundary. (0 to 12 inches thick)
Bw1--14 to 28 inches; reddish brown (5YR 4/4) very gravelly loam, light brown (7.5YR 6/4) dry; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common roots; many very fine tubular pores; 35 percent gravel and 10 percent cobbles; slightly acid (pH 6.2); gradual wavy boundary.
Bw2--28 to 47 inches; reddish brown (5YR 4/4) very gravelly loam, strong brown (7.5YR 5/6) dry; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few roots; many very fine tubular pores; 35 percent gravel, and 15 percent cobbles; moderately acid (pH 6.0); clear wavy boundary. (Combined thickness of the Bw horizon is 14 to 42 inches)
2C--47 to 60 inches; reddish brown (5YR 4/4) extremely cobbly loam; massive; soft, very friable, slightly sticky and nonplastic; 25 percent gravel, 40 percent cobbles, and 15 percent stones; moderately acid (pH 6.0).
TYPE LOCATION: Hood River County, Oregon; SE1/4 NW1/4 section 17, T. 1 N., R. 9 E.
RANGE IN CHARACTERISTICS: The soils are usually moist and are dry for less than 45 consecutive days throughout the moisture control section. The mean annual soil temperature is 40 to 44 degrees F. and the mean summer soil temperature is less than 47 degrees F. Depth to bedrock is 60 inches or more. The fine earth fraction of the particle-size control section contains 20 to 60 percent ash or other pyroclastic materials. It has greater than 85 percent phosphate retention, acid oxalate extractable aluminum plus one-half iron of more than 2.0 percent, and 15 to 20 percent 15-bar moisture based on an air-dried sample.
The A horizon has hue of 10YR through 5YR, value of 2 or 3 moist and chroma of 2 through 4 moist and dry. It is silt loam, gravelly silt loam, gravelly sandy loam or gravelly loam and has 5 to 30 percent gravel and 5 to 10 percent cobbles. It is slightly to strongly acid.
The Bw horizon has hue of 10YR to 5YR, value of 5 or 6 dry, 3 or 4 moist, and chroma of 3 or 4 moist and dry. It is extremely cobbly or very gravelly silt loam or loam and has less than 18 percent clay. It has 25 to 40 percent gravel, 10 to 45 percent cobbles, and 0 to 15 percent stones. It is slightly to strongly acid.
The 2C horizon has hue of 10YR to 5YR. It is extremely cobbly loam, very cobbly loam, very stony loam, or very gravelly sandy loam. It has 10 to 30 percent gravel, 20 to 55 percent cobbles, and 0 to 25 percent stones. It is slightly acid to very strongly acid.
COMPETING SERIES: These are the Grousehill, Holderman, Highcamp, and Kinzel series. Grousehill soils are 20 to 40 inches to a paralithic contact. Holderman soils are less than 40 inches to bedrock. Highcamp soils are 40 to 60 inches to bedrock. Kinzel soils have umbric epipedons 10 to 18 inches thick.
GEOGRAPHIC SETTING: The Divers soils are on mountains. Elevations of 2,800 to 4,800 feet and range to 6,000 feet in northern Idaho. Slopes are 3 to 90 percent. The soils formed in mixed ash and medium textured colluvial materials weathered from basalt and andesite. The climate is characterized by cold wet winters and cool moist summers. The mean annual temperature is 38 to 45 degrees F. The mean January temperature is 30 degrees F. The mean summer temperature is 48 to 52 degrees F. The mean annual precipitation is 50 to 135 inches. The frost-free period is 10 to 60 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Goodlow, Hutson, and competing Kinzel. Goodlow soils have an umbric epipedon and are in mountainous areas. Hutson soils have a spodic horizon and are in mountainous areas.
DRAINAGE AND PERMEABILITY: Well drained; moderate permeability.
USE AND VEGETATION: These soils are used mainly for timber production, wildlife, recreation and water supply. Vegetation is mainly Douglas fir, grand fir, noble fir, white pine and Oregon maple, plus subalpine fir in Idaho. Brush plants are vine maple, hazel and ceanothus.
DISTRIBUTION AND EXTENT: Western Hood River County, Oregon and northern Idaho; MLRA 3,43. The series is moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Hood River County, Oregon, 1975.
REMARKS:
Diagnostic horizons and features recognized in this pedon:
Ochric epipedon - from 1 to 14 inches (A and BA horizon)
Cambic horizon - from 14 to 47 inches (Bw1 and Bw2 horizons)
Particle-size control section - from 1 to 41 inches (A, BA, and Bw1 horizons and upper 12 inches of Bw2 horizons) with weighted average of 40 percent rock fragments.
Andic soil properties - from 1 to 47 inches.