LOCATION WANAGAN NDEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, frigid Typic Haplustolls
TYPICAL PEDON: Wanagan loam - on a slope of 1 percent in a fallowed small grain field. When described the soil was moist throughout. (Colors are for dry soil unless otherwise stated)
Ap--0 to 7 inches; dark grayish brown (10YR 4/2) loam, very dark brown (10YR 2/2) moist; weak thin platy structure; slightly hard, very friable, sticky and plastic; few very fine roots; slightly acid; abrupt smooth boundary. (5 to 11 inches thick)
Bw--7 to 14 inches; brown (10YR 4/3) loam, dark brown (10YR 3/3) moist; weak medium and coarse prismatic structure parting to weak medium subangular blocky; slightly hard, very friable, slightly sticky and slightly plastic; few very fine roots; 2 percent gravel; slightly alkaline; clear wavy boundary. (4 to 10 inches thick)
Bk--14 to 18 inches; pale brown (10YR 6/3) loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few very fine roots; 5 percent gravel; violent effervescence; slightly alkaline; clear wavy boundary. (0 to 16 inches thick)
2BCk--18 to 26 inches; very pale brown (10YR 7/3) and brown (10YR 5/3) very gravelly sandy clay loam, pale brown (10YR 6/3) and dark brown (10YR 4/3) moist; massive; slightly hard, friable, sticky and plastic; few very fine roots; 40 percent gravel; 5 percent cobbles; common fine masses of carbonates; violent effervescence; moderately alkaline; gradual wavy boundary. (0 to 20 inches thick)
2C1--26 to 39 inches; pale brown (10YR 6/3) very gravelly fine sandy loam, dark brown (10YR 4/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; few very fine roots; 60 percent gravel; 5 percent cobbles; violent effervescence; moderately alkaline; gradual wavy boundary.
2C2--39 to 50 inches; pale brown (10YR 6/3) very gravelly fine sandy loam, dark brown (10YR 4/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; 50 percent gravel; 5 percent cobbles; strong effervescence; moderately alkaline; clear wavy boundary.
2C3--50 to 60 inches; light brownish gray (2.5Y 6/2) extremely gravelly loam, grayish brown (2.5Y 5/3) moist; massive; slightly hard, friable, slightly sticky and slightly plastic; 60 percent gravel; 5 percent cobbles; violent effervescence; moderately alkaline.
TYPE LOCATION: Golden Valley County, North Dakota; 1,250 feet south and 1,700 feet east of the northwest corner of sec. 17, T. 141 N., R. 105 W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 14 to 30 inches. The depth to carbonates ranges from 8 to 16 inches. The thickness of the mollic epipedon ranges from 8 to 16 inches. The depth to horizons containing 35 percent or more gravel ranges from 14 to 28 inches.
The Ap horizon has hue of 10YR, value of 4 or 5 dry and 2 or 3, moist and chroma of 2. It is loam. It is slightly acid to slightly alkaline.
The Bw horizon has hue of 10YR, value of 4 or 5 dry and 3 or 4 moist, and chroma of 2 or 3. It is loam. It is slightly alkaline or moderately alkaline. The percent gravel ranges from 1 to 15.
The Bk horizon has hue of 10YR or 2.5Y, value of 5 to 8 dry and 4 to 7 moist, and chroma of 2 to 4. It is loam. It is slightly alkaline or moderately alkaline. The percent coarse fragments ranges from 5 to 15. The 2BCk horizon is loam or sandy clay loam containing 15 to 60 percent coarse fragments.
The 2C horizon has hue of 2.5Y, 5Y or 10YR, value of 5 to 7 dry and 4 or 5 moist, and chroma of 2 to 4. It is loam, fine sandy loam or clay loam containing 35 to 85 percent coarse fragments. It is slight alkaline or moderately alkaline.
COMPETING SERIES: These are the Bitton, Datino, Heely, Labre, Osha, Perma, Pesmore, Peso, Pesowyo, Sandia, Slimbutte, Subwell and Veatch series. Bitton and Slimbutte soils contain more than 15 percent rock fragments in the Bw horizon. Datino, Labre, Osha, Perma and Sandia soils contain more than 15 percent rock fragments in the upper part of the solum. Heely, Pesmore, Peso, Pesowyo and Veatch soils have bedrock at 20 to 40 inches. Subwell soils have textures of sandy loam, coarse sandy loam or loamy sand in the fine earth fraction in the 2C horizon.
GEOGRAPHIC SETTING: Wanagan soils are on level to moderately sloping terraces and outwash plains. Slopes are commonly 0 to 6 percent, but range to 9 percent. The soils formed in alluvium. The mean annual temperature is 39 to 45 degrees F, and the mean annual precipitation is 13 to 18 inches. Most of the precipitation is in the spring and summer.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Amor, Cabba, Chama, Havrelon, Korchea, Lehr, Shambo, Stady, and Wabek soils. Amor, Cabba and Chama soils are on uplands underlain by soft bedrock. The Havrelon and Korchea soils are on flood plains. Lehr and Stady soils have sandy or sandy-skeletal substrata. Shambo soils lack rock fragments above a depth of 40 inches. Wabek soils are sandy-skeletal.
DRAINAGE AND PERMEABILITY: Well drained. Runoff is slow to medium. Permeability is moderate.
USE AND VEGETATION: Most areas of Wanagan soils are used for small grain, but some are used for native rangeland. Native vegetation consists of western wheatgrass, needleandthread, blue grama, green needlegrass, and prairie junegrass.
DISTRIBUTION AND EXTENT: Wanagan soils are of small extent in western North Dakota and possibly eastern Montana.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Golden Valley County, North Dakota, 1985.
REMARKS: Revised 4/94.
Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface of the soil to a depth of 14 inches (Ap and Bw horizon).
The typical pedon, S82ND033-140, was sampled for characterization and engineering properties.