LOCATION REAM IDEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Typic Calcixerolls
TYPICAL PEDON: Ream silt loam, irrigated hayland; on a 2 percent slope at 5,975 feet elevation. When described on October 31, 1990 the soil was slightly moist throughout. (Color is for air dry soil unless otherwise noted.)
Ap1--0 to 3 inches; grayish brown (10YR 5/2) silt loam, very dark grayish brown (10YR 3/2) moist; weak thin and medium platy structure parting to moderate fine and medium granular; slightly hard, very friable, slightly sticky and slightly plastic; common very fine through coarse roots; common very fine irregular and few fine tubular pores; 2 percent gravel; strongly effervescent; disseminated lime (<2 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); abrupt smooth boundary. (2 to 4 inches thick)
Ap2--3 to 13 inches; brown (10YR 5/3) silt loam, dark brown (10YR 3/3) moist; weak medium prismatic structure parting to moderate fine and medium subangular blocky; slightly hard, very friable, slightly sticky and slightly plastic; common very fine through coarse roots; common very fine and few fine tubular pores; few fine faint clay film bridging sand grains; 2 percent gravel; slightly effervescent; disseminated lime; few fine irregularly shaped soft lime masses (<2 percent calcium carbonate equivalent); moderately alkaline (pH 7.9); clear wavy boundary. (6 to 13 inches thick)
Btk--13 to 19 inches; pale brown (10YR 6/3) silt loam, dark yellowish brown (10YR 4/4) moist; moderate medium prismatic structure parting to moderate fine and medium subangular blocky; slightly hard, very friable, moderately sticky and slightly plastic; common very fine and few fine and medium roots; common very fine and medium and few fine tubular pores; few fine faint clay films bridging sand grains; 10 percent hard cicada krotovinas; strongly effervescent; disseminated lime; few fine irregularly shaped soft lime filaments and masses (20 percent calcium carbonate equivalent); moderately alkaline (pH 8.3); clear wavy boundary. (0 to 8 inches thick)
Bk1--19 to 24 inches; very pale brown (10YR 7/3) silt loam, brown (7.5YR 5/4) moist; weak thick platy structure parting to moderate fine and medium subangular blocky; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and few fine roots; common very fine and medium and few fine tubular pores; 10 percent hard cicada krotovinas; violently effervescent; disseminated lime; common fine irregularly shaped soft lime filaments and masses (25 percent calcium carbonate equivalent); moderately alkaline (pH 8.4); clear wavy boundary. (4 to 7 inches thick)
Bk2--24 to 29 inches; very pale brown (10YR 7/4) loam, yellowish brown (10YR 5/4) moist; moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine and few fine roots; common very fine and few fine and medium tubular pores; strongly effervescent; disseminated lime; few fine irregularly shaped soft lime filaments and seams (15 percent calcium carbonate equivalent); moderately alkaline (pH 8.3); abrupt wavy boundary. (4 to 7 inches thick)
Bk3--29 to 34 inches; brown (7.5YR 5/4) sandy loam, dark yellowish brown (10YR 4/4) moist; weak fine and medium subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; moderate very fine and few fine roots; common very fine and few fine tubular and common very fine irregular pores; 2 percent gravel; strongly effervescent; disseminated lime; few fine irregularly shaped soft lime filaments (<2 percent calcium carbonate equivalent); moderately alkaline (pH 8.2); gradual wavy boundary. (4 to 7 inches thick)
2Bkq1--34 to 50 inches; light brown (7.5YR 6/4) very gravelly loamy coarse sand, brown (7.5YR 4/4) moist; single grain; loose; common very fine and few fine roots; common very fine irregular pores; 12 percent fine gravel, 50 percent total gravel; slightly effervescent; disseminated lime; 40 percent of coarse fragments have thin lime and silica coatings on undersides (5 percent calcium carbonate equivalent); moderately alkaline (pH 8.0); diffuse wavy boundary. (5 to 30 inches thick)
2Bkq2--50 to 61 inches; light brown (7.5YR 6/4) extremely gravelly sand, brown (7.5YR 4/4) moist; black (N 2/) moist soft manganese masses and staining; single grain; loose; common very fine irregular pores; 8 percent fine gravel, 50 percent total gravel, 20 percent cobbles; slightly effervescent; disseminated lime; 40 percent of coarse fragments have thin lime and silica coatings on undersides (5 percent calcium carbonate equivalent); moderately alkaline (pH 8.2).
TYPE LOCATION: Bear Lake County, Idaho; about 0.5 mile east of the Dingle cemetery; about 1,950 feet east and 1,500 feet south of the northwest corner of sec. 18, T.14S., R.45E. 42 degrees, 12 minutes, 29 seconds north latitude, 111 degrees, 14 minutes, 25 seconds west longitude.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness - 8 to 17 inches
Depth to calcic horizon - 8 to 25 inches
Depth to discontinuity - 25 to 40 inches
Depth to seasonal high water table - 48 to 60 inches (February through July)
Average annual soil temperature - 41 to 45 degrees F
Calcium carbonate equivalent - 15 to 25 percent in the particle-size control section
Particle-size control section averages less than 18 percent clay
Ap horizons
Chroma - 2 or 3 dry and moist
Clay content - 4 to 20 percent
Calcium carbonate equivalent - less than 15 percent
Rock fragments - 0 to 10 percent
Reaction - slightly alkaline or moderately alkaline
Btk horizon (absent in some pedons)
Value - 4 or 5 moist
Chroma - 3 or 4 moist
Clay content - 14 to 26 percent
Calcium carbonate equivalent - 15 to 25 percent
Rock fragments - 0 to 5 percent
Bk1 and Bk2 horizons
Hue - 7.5YR or 10YR
Value - 5 through 8 dry, 4 through 6 moist
Chroma - 2 through 4 dry and moist
Texture - SIL or L
Clay content - 14 to 26 percent
Calcium carbonate equivalent - 15 to 30 percent
Rock fragments - 0 to 10 percent
Reaction - slightly alkaline to strongly alkaline
Bk3 horizon
Hue - 7.5YR or 10YR
Value - 5 or 6 dry
Chroma - 2 through 4 dry and moist
Texture - FSL, SL, or GR-SL
Clay content - 5 to 15 percent
Rock fragments - 0 to 25 percent
Calcium carbonate equivalent - less than 10 percent
2Bkq horizons
Hue - 7.5YR or 10YR
Texture - GRV-LCOS, GRV-LS, GRX-FSL, GRX-LS, and GRX-S
Clay content - 1 to 5 percent
Rock fragments - 40 to 70 percent, 5 to 15 percent fine gravel
Calcium carbonate equivalent - less than 10 percent
COMPETING SERIES: This is the Wursten series. Wursten soils are well drained and do not have a lithologic discontinuity of skeletal material.
GEOGRAPHIC SETTING: Ream soils are on undulating stream terraces. Slopes range from 0 to 2 percent. Elevations range from 5,800 to 6,100 feet. The soil formed in mixed alluvium. Average annual precipitation is 12 to 16 inches, average annual temperature is 39 to 43 degrees F., the frost free period is 65 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Iphil (T), Merkley (T), and Lago (T) soils. Iphil and Merkley soils have a coarse-silty particle-size control section. Iphil soils are well drained. Merkley soils are moderately well drained. Lago soils have a fine-silty particle-size control section and are somewhat poorly drained. Iphil soils are on loess covered uplands and terraces above Ream soils. Merkley soils are on similar landscapes as Ream, but are on convex slopes when associated with Ream soils. Lago soils are on silty alluvium covered flood plains lower on the landscape than Ream soils.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow runoff; moderate permeability.
USE AND VEGETATION: Ream soils are used for irrigated and nonirrigated cropland and hayland and pastureland. Typical crops consist of small grains. The potential native vegetation is Basin big sagebrush and mixed grasses.
DISTRIBUTION AND EXTENT: Southeastern Idaho. The soils of this series are of small extent. MLRA 13.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Bear Lake County, Idaho, 2008. The name is taken from an irrigation canal in the area where the soil was first mapped.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 13 inches (the Ap1 and Ap2 horizons).
Calcic horizon - the zone from 13 to 24 inches (the Btk and Bk1 horizons).
Particle-size control section - The zone from 13 inches to 40 inches (the Btk, Bk1, Bk2, Bk3 and part of the 2Cq1 horizon). The particle size control section will be from 10 to 40 inches when the plow layer is less than 10 inches.
NSSL Sample # S91ID007005 (partial characterization)