LOCATION PRUCREE ID
Established Series
Rev. RK-CBR
10/2026
PRUCREE SERIES
The Prucree series consists of moderately deep, well drained soils formed in colluvium or slope alluvium over residuum weathered from sandstone, siltstone, or quartzite. These soils are on ridges, mountain slopes, fan remnants, and hillsides. Slopes are 4 to 30 percent. Mean annual precipitation is about 400 mm, and mean annual air temperature is about 3.9 degrees C.
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Pachic Haploxerolls
TYPICAL PEDON: Prucree sandy loam in rangeland. (Color is for air dry soil unless otherwise noted.)
A--0 to 5 cm; dark grayish brown (10YR 4/2) sandy loam, very dark brown (10YR 2/2) moist; strong very fine and fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine roots; many very fine irregular pores; 10 percent gravel; neutral (pH 7.1); abrupt smooth boundary.
BA--5 to 25 cm; dark grayish brown (10YR 4/2) sandy loam, very dark grayish brown (10YR 3/2) moist; moderat fine and medium subangular blocky structure parting to moderate very fine and fine granular; slightly hard, very friable, nonsticky and nonplastic; common very fine roots; many very fine tubular pores; 10 percent gravel; neutral (pH 7.1); gradual wavy boundary.
Bw1--25 to 48 cm; brown (7.5YR 4/2) sandy loam, dark brown (7.5YR 3/3) moist; moderate medium and coarse sbangular blocky structure; hard, very friable, nonsticky and nonplastic; common very fine and few fine roots; common very fine tubular pores; 5 percent gravel; neutral (pH 7.0); gradual wavy boundary.
Bw2--48 to 71 cm; brown (7.5YR 4/2) sandy loam, dark brown (7.5YR 3/2) moist; moderate medium and coarse sbangular blocky structure; hard, very friable, nonsticky and nonplastic; common very fine and few fine roots; common very fine tubular pores; 5 percent gravel; neutral (pH 7.0); abrupt smooth boundary.
Cr--71 to 74 cm; reddish brown (5YR 5/3), dark reddish brown (5YR 3/3) moist, sandstone that can be brokenin the hands and that breaks down slightly when soaked in water. Material can be rubbed to a loamy fine sand texture. (1 to 3 inches thick)
R--74 cm; reddish brown (5YR 5/3), dark reddish brown (5YR 3/3) moist, sandstone.
TYPE LOCATION: Bear Lake County, Idaho; USGS Giraffe Creek topographic quadrangle; latitude 42.4035833 north, longitude 111.0783333 west, datum WGS84.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature--3.9 to 5.6 degrees C
Thickness of mollic epipedon--50 to 100 cmDepth to bedrock--50 to 100 cm
Particle-size control section (weighted averages)
Clay content--12 to 17 percent
Rock fragment content--5 to 25 percent
A horizon
Hue--10YR or 7.5YR
Value--2 or 3 moist
Texture (less than 2 mm fraction)--sandy loam, loam
Clay content--10 to 26 percent
Rock fragments--0 to 20 percent - 0 to 20 percent gravel, 0 to 5 percent cobble
Reaction--6.1 to 7.3
Thickness--5 to 12 cm
BA horizon
Hue--10YR or 7.5YR
Texture (less than 2 mm fraction--sandy loam, loam
Clay content--12 to 17 percent
Rock fragments--0 to 10 percent gravel
Reaction--6.6 to 7.3
Thickness--12 to 20 cm
Bw horizons
Hue--10YR or 7.5YR
Chroma--2 or 3 moist
Texture (less than 2 mm fraction--sandy loam, loam
Clay content--10 to 18 percent
Rock fragments--5 to 30 percent - 4 to 30 percent grave, 0 to 5 percent cobbles
Reaction--5.8 to 7.6
Thickness--75 to 69 cm
COMPETING SERIES:
Cinderspring (T)(ID)--soils are very deep to lithic contact
Iver (NV)--soils are very deep to lithic contact
Kabear (ID)--soils are very deep to lithic contact
Lobert (OR)--soils are very deep to lithic contact
Ola (ID)--soils are mean annual soil temp above 5.6 degrees C
Redmount (OR)--soils are very deep to lithic contact
Shively (NV)--soils are deep to lithic contact
Suryon (ID)--soils are very deep to lithic contact
Taterpa (OR)--soils are deep to lithic contact
Wagore (NV)--soils are very deep to lithic contact
GEOGRAPHIC SETTING:
Landform-- ridges, mountain slopes, fan remnants, and hillsides
Elevation--1,740 to 2,210 meters
Slope--4 to 30 percent
Parent material--colluvium or slope alluvium over residuum weathered from sandstone, siltstone, or quartzite
Climate--long, cold winters; cool, moist springs; short, warm summers
Mean annual precipitation--360 to 580 mm
Mean annual air temperature--2.8 to 6.0 degrees C
Frost-free period--60 to 85 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND SATURATED HYDRAULIC OCNDUCTIVITY: Well drained; 5 to 50 um/sec.
USE AND VEGETATION: Prucree soils are primarily used for grazing. The potential native vegetation is mountain big sagebrush and bluebunch wheatgrass.
DISTRIBUTION AND EXTENT: Prucree soils are of small extent in southeastern Idaho; MLRAs 13 and 43B.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Bear Lake County, Idaho, 2008. The name is coined from a nearby creek.
REMARKS: Diagnostic horizons and features recognized in this pedon:
Mollic epipedon--0 to 71 cm (A, BA, Bw1 and Bw2 horizons)
Particle-size control section--25 to 71 cm (Bw1 and Bw2 horizons)
Prucree soils have a frigid temperature regime and a xeric moisture regime.
Taxonomic version: Twelfth Edition, 2014
National Cooperative Soil Survey
U.S.A.