LOCATION LILYLAKE IDEstablished Series
TAXONOMIC CLASS: Sandy-skeletal, mixed Histic Cryaquepts
TYPICAL PEDON: Lilylake muck-- on a 1 percent, slope at 6,300 feet elevation with sedge and rush vegetation. (Colors are for moist soil unless otherwise noted. When described on September 2, 1986, the soil was moist throughout.)
Oa1--0 to 3 inches; black (10YR 2/1) on broken face and rubbed, muck; about 25 percent fibers, about 5 percent after rubbing; weak medium granular structure; many very fine and fine and few coarse roots; slightly acid (pH 6.2); clear smooth boundary.
Oa2--3 to 9 inches; very dark brown (10YR 2/2) on broken face and rubbed, muck; about 30 percent fibers, about 10 percent after rubbing; massive; many very fine and fine and few coarse roots; moderately acid (pH 6.0); clear wavy boundary.
Oa3--9 to 12 inches; very dark brown (10YR 2/2) on broken face and black (10YR 2/1) rubbed, muck; about 40 percent fibers, about 5 percent after rubbing; massive; many very fine and few coarse roots; moderately acid (pH 6.0); clear wavy boundary. (Combined thickness of the Oa horizons is 10 to 16 inches)
2C1--12 to 15 inches; dark grayish brown (2.5Y 4/2) sand, brown (10YR 5/3) dry; common fine and medium prominent brown (7.5YR 4/4) and strong brown (7.5YR 4/6) redox concentrations; single grain; loose; many very fine and fine irregular pores; 5 percent pebbles; slightly acid (pH 6.4); abrupt wavy boundary. (0 to 6 inches thick)
2C2--15 to 60 inches; dark grayish brown (2.5Y 4/2) extremely gravelly coarse sand, light brownish gray (2.5Y 6/2) dry; many coarse prominent brown (7.5YR 4/4) and strong brown (7.5YR 4/6) redox concentrations; single grain; loose; many fine and medium irregular pores; 50 percent gravel, 25 percent cobbles, 1 percent stones; slightly acid (pH 6.4).
TYPE LOCATION: Blaine County, Idaho; about 1 mile east/northeast of Pettit Lake; about 1,800 feet north and about 2,000 feet west of the southeast corner of section 29, T. 8 N., R. 14 E.
Latitude - 43 degrees, 59 minutes, 22 seconds North;
Longitude - 114 degrees, 50 minutes, 24 seconds West.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 35 to 40 degrees F.
Average annual summer soil temperature - 40 to 43 degrees F.
Depth to high water table - +6 inches to 6 inches below the surface.
Thickness of organic layer - 10 to 16 inches.
Organic materials - dominantly sapric although minor hemic layers occasionally occur.
Particle-size control section:
Clay content - 0 to 5 percent
Rock fragments - average 60 to 90 percent
Oa horizon
Value - 1 through 3 moist
Chroma - 1 or 2 moist
Reaction - slightly or moderately acid
2C horizon
Hue - 2.5Y, 5Y, or 10YR.
Value - 4 through 6 dry or moist.
Chroma - 2 or 3 dry or moist.
Texture - GRX-COS, GRX-LCOS, S, COS, CBX-COS.
Reaction - slightly acid or neutral.
COMPETING SERIES: This is the Chichagof series. Chichagof soils have an overstory plant community dominated by western hemlock and sitka spruce.
GEOGRAPHIC SETTING: Lilylake soils are on floodplains and in depressions on terraces. These soils formed in organic material derived from herbaceous plants over stream alluvium. Slopes are 0 to 2 percent. Elevations are 5,000 to 7,300 feet. The climate is cold and moist in winter and spring and cool in summer. Average annual precipitation is 10 to 16 inches. Average annual temperature is 32 to 42 degrees F. The frost-free period is 5 to 70 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Copperbasin, Grandjean, Fezip, Redfish, and Wiggleton soils. Copperbasin soils are on floodplains, lack histic epipedons and are somewhat poorly drained. Grandjean soils are on floodplains, are very poorly drained and have organic layers 20 to 40 inches thick. Fezip soils are on floodplains and have contrasting particle-size control sections. Redfish soils are on floodplains, are poorly drained and have organic layers less than 6 inches thick. Wiggleton soils are on floodplains and alluvial fans and are well drained or somewhat excessively drained.
DRAINAGE AND PERMEABILITY: Very poorly drained. Runoff is very slow or ponded. Permeability is rapid. These soils are frequently flooded from January to June for long periods.
USE AND VEGETATION: Pasture. The natural vegetation is sedges, rushes, grasses and other water loving plants.
DISTRIBUTION AND EXTENT: Central and east-central Idaho. These soils are not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES ESTABLISHED: Custer-Lemhi Counties, Idaho, 1999.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Histic epipedon - The zone from the surface to 12 inches (Oa1, Oa2, Oa3 horizons).
Particle-size control section - The zone from 10 to 40 inches (part of the Oa3, the C1, and part of the C2 horizons).