LOCATION NOTOM UT

Established Series
Rev. JBB/VLP
07/2013

NOTOM SERIES

The Notom series consists of very deep, somewhat excessively to excessively drained soils that formed in alluvium derived from mixed sedimentary and igneous volcanic sources. Notom soils are on flood-plain steps. Slopes range from 1 to 5 percent. Mean annual precipitation is about 9 inches (229 mm) and the mean annual temperature is about 51 degrees F (11 degrees C).

TAXONOMIC CLASS: Sandy-skeletal, mixed, mesic Ustic Torrifluvents

TYPICAL PEDON: Notom loamy fine sand - rangeland. (Colors are for dry soil unless otherwise noted.)

A--0 to 4.5 inches (0 to 12 cm); yellowish red (5YR 5/6) loamy fine sand, light reddish brown (5YR 6/4), moist; 3 percent clay; weak very coarse platy parts to single grain structure; slightly hard, very friable, nonsticky and nonplastic; few fine and common very fine roots throughout; many very fine interstitial and irregular and common fine interstitial and irregular pores; 5 percent gravel and 5 percent cobbles; very slightly effervescent; moderately alkaline, pH 8.0; clear smooth boundary. (4 to 8 inches (10 to 20 cm) thick)

C1--4.5 to 14 inches (12 to 35 cm); reddish yellow (5YR 6/6) stony loamy fine sand, yellowish red (5YR 5/6), moist; 3 percent clay; massive; slightly hard, very friable, nonsticky and nonplastic; few fine and medium roots throughout; many very fine interstitial and irregular pores; 5 percent gravel and 10 percent basalt stones; very slightly effervescent; moderately alkaline, pH 8.0; gradual smooth boundary. (7 to 24 inches (18 to 61 cm) thick)

Ab--14 to 15 inches (35 to 38 cm); light brown (7.5YR 6/4) loamy fine sand, dark brown (7.5YR 3/4), moist; 3 percent clay; massive; slightly hard, very friable, slightly sticky and nonplastic; common very fine, fine and medium roots throughout; many very fine interstitial and irregular pores; slightly effervescent; moderately alkaline, pH 8.2; very abrupt broken boundary. (0 to 2 inches (0 to 5 cm) thick)

C2--15 to 60 inches (38 to 150 cm); light brown (7.5YR 6/4) extremely stony loamy sand, brown (7.5YR 4/4), moist; 3 percent clay; single grain; slightly hard, very friable, nonsticky and nonplastic; few fine and common medium roots throughout; many very fine interstitial and irregular pores; 10 percent mixed gravel, 25 percent mixed mixed cobbles, 30 percent basalt stones, and 15 percent basalt boulders; very slightly effervescent; moderately alkaline, pH 8.0.

TYPE LOCATION: Soil Survey of Capitol Reef National Park; Wayne County, Utah; lat. 38 degrees 11 minutes 10 seconds N. and long. 111 degrees 8 minutes 17 seconds W., NAD 83.

RANGE IN CHARACTERISTICS:

Soil moisture: Intermittently moist in some part of the soil moisture control section from December to March and July to September. Driest during May and June. Ustic Aridic moisture regime.

Mean annual soil temperature: 47 to 53 degrees F. (8 to 12 degrees C.)

Particle-size control section (weighted average):
Clay content: 2 to 8 percent
Rock fragments: 35 to 85 percent gravel, cobbles, and stones

A and upper C horizons (above 60 centimeters)
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 4 to 6 moist
Chroma: 4 to 6, dry or moist
Texture: fine sand, loamy fine sand
Clay content: 2 to 8 percent
Calcium carbonate equivalent: 1 to 3 percent
Electrical conductivity: 0 to 2 mmhos/cm
Rock fragments: 0 to 35 percent gravel, cobbles, and stones

Ab horizon
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 3 or 4 moist
Chroma: 4 or 6, dry or moist
Texture: fine sand, loamy fine sand
Clay content: 2 to 8 percent
Calcium carbonate equivalent: 1 to 3 percent
Electrical conductivity: 0 to 2 mmhos/cm
Rock fragments: 0 to 15 percent gravel, cobbles, and stones

Lower C horizons (below 60 centimeters)
Hue: 5YR, 7.5YR
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 4 or 6, dry or moist
Texture: fine sand, loamy fine sand, loamy coarse sand, loamy sand
Clay content: 2 to 8 percent
Calcium carbonate equivalent: 1 to 3 percent
Electrical conductivity: 0 to 2 mmhos/cm
Rock fragments: 35 to 65 percent gravel, cobbles, and stones

COMPETING SERIES: These are the Livan (WY) series. Livan soils have a mean annual soil temperature of 47 to 51 degrees F, are driest during July, August, and September, and have colors of 7.5YR or yellower.

GEOGRAPHIC SETTING: Notom soils are on flood-plain steps at elevations of 5,250 to 6,300 feet (1,590 to 1,909 m). Slopes range from 1 to 5 percent. These soils formed in alluvium derived from mixed sedimentary and igneous volcanic sources. The mean annual precipitation is 9 to 13 inches (229 to 330 mm) with high intensity thunderstorms between July and September. The mean annual air temperature is 46 to 52 degrees F (8 to 11 degrees C). The average frost-free period is 140 to 160 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bowington (UT), Begay (UT), and Mido (UT) series. Bowington soils are on floodplains and flood-plain steps and are moderately well drained with endosaturation from 40 to 60 inches. Begay soils are on stream terraces and contain a cambic horizon. Mido soils are on eolian deposits on stream terraces.

DRAINAGE AND PERMEABILITY: Somewhat excessively or excessively drained, very low runoff, very high permeability, occasionally or rarely flooded for very brief periods during the months of July to September.

USE AND VEGETATION: Notom soils are used for livestock grazing and wildlife habitat. Vegetation includes Fremont cottonwood, tamarisk, rubber rabbitbrush, Indian ricegrass, and narrowleaf willow.

DISTRIBUTION AND EXTENT: Capitol Reef National Park, Utah; MLRA 35, LRR D. Notom soils are of limited extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona

SERIES ESTABLISHED: Wayne County, Utah; Capitol Reef National Park Soil Survey, 2013

REMARKS: Notom is the name of a pioneer community settled along Pleasant Creek near the type location.

Diagnostic horizons and features recognized in this pedon are:

Entisol feature - lack of diagnostic horizons

Fluvent feature - irregular decrease in organic carbon with depth

Classified according to Soil Taxonomy, Second Edition, 1999; Keys to Soil Taxonomy, Eleventh Edition, 2010

National Cooperative Soil Survey
U.S.A.