LOCATION REDFISH ID+MTEstablished Series
TAXONOMIC CLASS: Sandy-skeletal, mixed Typic Cryaquolls
TYPICAL PEDON: Redfish mucky peat, in a pasture; on a 1 percent slightly concave slope at 2103 meters elevation. When described on July 17, 1985 the soil was moist from the surface to a water table at 36 cm. (Colors are for dry soil unless otherwise noted.)
Oe--0 to 8 cm; mucky peat. (0 to 15 cm thick)
A--8 to 18 cm; grayish brown (10YR 5/2) gravelly sandy loam, very dark grayish brown (2.5Y 3/2) moist; weak fine granular structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; common very fine and fine tubular pores; 25 percent gravel; moderately acid (pH 5.8); clear smooth boundary. (8 to 30 cm thick)
Ag1--18 to 28 cm; grayish brown (2.5Y 5/2) very gravelly sandy loam, very dark grayish brown (2.5Y 3/2) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine roots; common very fine and fine tubular pores; few fine prominent brown (10YR 5/3) iron masses; 45 percent fine gravel; moderately acid (pH 5.8); clear smooth boundary.
Ag2--28 to 46 cm; grayish brown (2.5Y 5/2) very gravelly sandy loam, very dark grayish brown (2.5Y 3/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and fine roots; common very fine and fine tubular pores; common fine prominent strong brown (7.5YR 5/6) and reddish yellow (7.5YR 6/6) iron masses; 50 percent fine gravel; moderately acid (pH 6.0); gradual smooth boundary.
Ag3--46 to 64 cm; grayish brown (2.5Y 5/2) very gravelly sandy loam, dark grayish brown (2.5Y 4/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine and fine roots; common very fine and fine tubular pores; 50 percent fine gravel, 5 percent cobbles; moderately acid (pH 6.0); gradual wavy boundary. (Combined thickness of the Ag horizons or when present the Bg horizon is 0 to 50 cm)
2Cg--64 to 160 cm; grayish brown (2.5Y 5/2) extremely gravelly coarse sand, dark grayish brown (2.5Y 4/2) moist; single grain; loose; nonsticky and nonplastic; few very fine roots; common fine irregular pores; 55 percent gravel, 15 percent cobbles; moderately acid (pH 6.0).
TYPE LOCATION: Blaine County, Idaho; about 3.2 kilometers east of Pettit Lake; about 213 meters south and 183 meters west of the northeast corner of section 32, T. 8 N., R. 14 E.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness: 25 to 46 cm
Depth to high water table: 30 cm above to 30 cm below the surface in March to
November
Depth to redoximorphic features (iron concentrations/depletions): 0 to 40 cm
Control section total clay: 4 to 10 percent
Depth to the sandy-skeletal material (2Cg horizon: 25 to 64 cm
Rock fragments: 5 to 60 percent rounded gravels in the mineral horizons; average of
more than 35 percent in the particle size control section
Soil reaction: neutral to slightly alkaline
Calcium carbonate equivalent: less than 5 percent in horizons directly below the mollic
epipedon, occasionally greater than 5 percent in lower subsoil
Mean annual soil temperature: 1.7 to 7.2 degrees C.
Mean summer soil temperature: 4.4 to 12.8 degrees C. (The O horizon is not
always present) cryic temperature regime
A and Ag horizons
Hue: 10YR to 5Y
Value: 3 to 6 dry, 2 to 4 moist
Chroma: 1 to 3 dry or moist
Texture: L or SL with 5 to 40 percent gravel
Rock fragments: 5 to 40 percent gravel
Redoximorphic features (where they occur): 7.5YR or 10YR, value 3 to 5, chroma 4 or 6 moist
Bw horizon (when present)
Hue: 10YR or 2.5Y moist
Value: 3 or 4 moist
Chroma: 2 or 3 moist
Texture: GR-SL, GRV-SL, GRX-L
Rock fragments: 20 to 65 percent total; 20 to 55 percent gravel; 0 to 10 percent cobble
Redoximorphic features (where they occur): 5YR to 10YR, value 3 to 5, chroma 4 or 6
moist
Calcium carbonate equivalent: less than 5 percent
2Cg horizon
Texture: GRX-COS or GRX-LCOS
Rock fragments: 60 to 90 percent total; 40 to 60 percent gravel; 15 to 30 percent cobble
COMPETING SERIES: This is the Newfork series. Newfork soils have a mean summer soil temperatures of 11.1 to 14.4 degrees C.
GEOGRAPHIC SETTING:
Landscape: Alluvial plain, outwash plain
Landform: Flood plain, fan remnant, valley floor
Elevation: 1372 to 2256 meters
Slope: 0 to 4 percent
Parent material: Alluvium
Mean annual precipitation: 250 to 510 mm
Mean annual air temperature: 1.1 to 6 degrees C
Climate: The cool subhumid continental climate has warm summers and cold moist
winters.
Frost free period: 5 to 60 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Busterback, Fezip, Lilylake, Foxcreek, Furniss, Boquet, Zohner, Driggs, Feltonia, Badgerton, and Wiggleton soils. Busterback soils are on outwash fans and stream terraces, are pachic and have loamy-skeletal particle-size control sections. Fezip soils are on flood plains and have strongly contrasting particle-size control sections. Lilylake soils are on flood plains and have histic epipedons that are 25 to 41 cm thick. Foxcreek soils are on valley floors, flood plains and lower fan remnants and are fine-loamy over sandy or sandy-skeletal. Furniss and Boquet soils are on valley floors, swales, and flood plains and are fine-loamy. Zohner soils are on valley floors and are fine-loamy. Driggs, Feltonia, Badgerton and Wiggleton soils are on fan remnants and have a xeric soil moisture regime.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class: Poorly and very poorly drained
Runoff: Negligible to very low
Saturated hydraulic conductivity: High over very high
Flooding frequency and duration: Occasional to frequent flooding for brief to long
periods in March to August.
USE AND VEGETATION:
Major uses: Pasture and hay
Range/ecological site:
R043AY007ID
R043AY011ID
R013XY038ID
R013XY049ID
Dominant native vegetation: grasses, sedges, and willows or cottonwoods
DISTRIBUTION AND EXTENT:
Distribution: Central Idaho and Southwest Montana; MLRA 12, 13, 43 and 44
Extent: These soils are not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Custer County, Idaho, 1999
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: The zone from 8 to 46 cm
Redoximorphic features (iron concentrations/depletions): Beginning at a depth of 5 cm
Particle-size control section: From a depth of 25 to 100 cm
Soil temperature regime: Cryic
Soil moisture regime: Aquic