LOCATION HAGGA CO+UT WYEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, calcareous, frigid Typic Fluvaquents
TYPICAL PEDON: Hagga loam, non-cultivated. (Colors are for dry soil unless otherwise noted.)
A1-0 to 5 inches; light brownish gray (2.5Y 6/2) loam, dark grayish brown (10YR 4/2) moist; moderate medium granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine and fine and few medium roots; many very fine and fine and few medium vesicular pores; strongly effervescent; moderately alkaline; abrupt wavy boundary. (3 to 8 inches thick)
A2--5 to 9 inches; light brownish gray (2.5Y 6/2) loamy fine sand, brown (10YR 5/3) moist; massive; soft, very friable; many very fine and fine and few medium roots; common fine and few medium tubular pores; strongly effervescent; moderately alkaline; abrupt wavy boundary. (0 to 6 inches thick)
2Ag--9 to 27 inches; light olive gray (5Y 6/2) light clay loam, grayish brown (10YR 5/2) moist; thin lenses of dark brown (10YR 4/3) moist; common fine distinct brown (10YR 5/3 and 7.5YR 4/4) redox features; moderate medium granular and subangular blocky structure; hard, friable, sticky and plastic; many very fine and fine and few medium roots; common very fine and fine and few medium tubular pores; strongly effervescent; moderately alkaline; abrupt wavy boundary. (10 to 24 inches thick)
3Cg--27 to 31 inches; light olive gray (5Y 6/2) fine sandy loam, grayish brown (2.5Y 5/2) moist; few fine distinct brown (7.5YR 4/4) and dark grayish brown (2.5Y 4/2) redox features; massive; soft, very friable; common very fine and fine and few medium roots; common fine and few medium tubular pores; strongly effervescent; moderately alkaline; abrupt wavy boundary. (3 to 12 inches thick)
4Abg--31 to 37 inches; light brownish gray (2.5Y 6/2) silty clay loam, brown (10YR 4/3) moist; common fine faint dark grayish brown (10YR 4/2 and 2.5Y 4/2) redox features; massive; hard, friable, sticky and plastic; few very fine and fine tubular pores; strongly effervescent; moderately alkaline; clear wavy boundary. (0 to 8 inches thick)
5Cbg--37 to 60 inches; light gray (5Y 7/1) fine sandy loam, variegated - 70 percent olive gray (5Y 5/2), 30 percent gray (N 5/) moist; massive; slightly hard, very friable, slightly sticky and slightly plastic; few fine roots; strongly effervescent; moderately alkaline.
TYPE LOCATION: Rio Blanco County, Colorado; 1,160 feet north of intersection of Ryan Gulch road and Piceance Creek highway; 475 feet west of Piceance Creek highway in the SW1/4 NW1/4 Sec. 33, T. 1 S., R. 97 W. U.S.G.S. Square S Ranch quad.; Latitude: 39 degrees, 55 minutes, 27 seconds N.; Longitude: 108 degrees, 17 minutes, 37 seconds W.
RANGE IN CHARACTERISTICS: Mean annual soil temperature ranges from 43 to 47 degrees F., and mean summer soil temperature ranges from 59 to 68 degrees F. The soil is saturated and has a temporary water table for six months or more during most years unless artificially drained. The soil is calcareous throughout, but lacks sufficient secondary carbonates to have a calcic horizon. In uncultivated areas some pedons have a thin 0 horizon less than 4 inches thick.
The A horizon has hue of 5Y through 10YR, value of 5 through 7 dry, 3 through 6 moist, and chroma of 1 or 2. The lower part of the A horizon has faint to prominent mottles with hues of 5Y through 7.5YR, value of 5 or 6, and chroma of 3 through 6. Some pedons have a Bg horizon.
The particle-size control section has matrix of 5Y through 5BG and is mottled throughout. It is predominantly clay loam, but is stratified with lenses 1 to 12 inches thick that range from silty clay loam to fine sand. The clay content averages 18 to 35 percent.
The substratum, or C horizon, has hue of 5Y through 5BG, value of 6 through 8 dry, 5 or 6 moist, and chroma of 1 through 3. Below a depth of about 3 feet, a massive, silty, or clayey layer, which restricts water movement, is commonly present but not required.
COMPETING SERIES: These are the Bigsandy (MT) and Mckeen (ND) series. Bigsandy soils lack lithologic discontinuity in the profile and are at elevations of 2,600 to 4,600 feet. Mckeen soils lack lithologic discontinuity in the profile and are at low elevations along the Missouri River.
GEOGRAPHIC SETTING: Hagga soils are on narrow valley bottoms and concave depressions on flood plains. Slopes range from 0 to 5 percent. The soil formed in mixed alluvial deposits weathered from calcareous sandstone, marlstone, and shale. The soils are in a cool, semiarid climate. Annual precipitation ranges from 8 to 18 inches. In Utah, annual precipitation is as low as 10 inches. Mean January temperature is about 21 degrees F.; the mean July temperature is about 66 degrees F. The average annual temperature is about 40 to 45 degrees F. Elevation ranges from 5,800 to 8,200 feet. The frost-free season is about 60 to 105 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Glendive, Hanly, and Havre soils. Glendive and Havre soils are well drained and Glendive soils have a coarse-loamy particle-size control section. Hanly soils are somewhat excessively drained and have a sandy particle-size control section.
DRAINAGE AND PERMEABILITY: Poorly drained, with fluctuating water tables ranging in depth from 0 to 12 inches in wet periods; slow runoff or periodically ponded; moderately slow permeability.
USE AND VEGETATION: These soils are used primarily for meadow hay and livestock grazing; also used by some wildlife for food source and cover. Native vegetation is mainly sedges, rushes, and water-tolerant grasses. Broadleaf sedges and Carexs grow in the more poorly drained areas.
DISTRIBUTION AND EXTENT: Hagga soils are of small extent in the lower mountain valley areas of western and south central Colorado and northeast Utah and southwest Wyoming.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Rio Blanco County, (Rio Blanco County Area), Colorado, 1979.
REMARKS: This soil is hydric in Colorado. Diagnostic horizons and features recognized are: an ochric epipedon; stratification throughout the texture control sectionp; redox features below 9 inches; high watertable for 6 months or more; a frigid temperature regime. Last updated by the state 4/95.
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Lakewood MLRA office, without review of the soil series property data. The remainder of this document has not been updated.