LOCATION DRESSLEWET              NV

Established Series
Rev. EWB/JVC/JBF
03/2017

DRESSLEWET SERIES

The Dresslewet series consists of very deep, somewhat poorly drained soils that formed in alluvium derived from mixed sources. Dresslewet soils are on low stream terraces and alluvial fans. Slopes are 0 to 4 percent. The mean annual precipitation is about 230 mm and the mean annual temperature is about 10 degrees C.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Oxyaquic Haploxerolls

TYPICAL PEDON: Dresslewet loamy sand--hayland. (Colors are for dry soil unless otherwise noted.)

Ap--0 to 20 cm; grayish brown (10YR 5/2) loamy sand, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, slightly sticky and slightly plastic; many very fine roots; many fine interstitial and tubular pores; 10 percent gravel; slightly acid (pH 6.5); clear smooth boundary. (13 to 25 cm thick)

A--20 to 48 cm; grayish brown (10YR 5/2) gravelly sandy loam, very dark grayish brown (10YR 3/2) moist; massive; soft, very friable, slightly sticky and nonplastic; many very fine roots; many fine interstitial and tubular pores; 20 percent gravel; slightly acid (pH 6.5); clear smooth boundary. (13 to 30 cm thick)

C1--48 to 63 cm; light yellowish brown (10YR 6/4) gravelly loamy sand and gravelly sandy loam, dark yellowish brown (10YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine roots; many fine and few very fine tubular pores; 20 percent gravel, 5 percent cobbles; slightly acid (pH 6.5); clear smooth boundary. (10 to 50 cm thick)

C2--63 to 152 cm; pale brown (10YR 6/3) stratified gravelly loamy sand and gravelly fine sandy loam, dark yellowish brown (10YR 4/4) moist; massive; soft, very friable, nonsticky and nonplastic; few very fine roots; few fine and very fine interstitial and tubular pores; common coarse distinct strong brown (7.5YR 5/6) moist, masses of iron accumulation; 20 percent gravel and 5 percent cobbles; slightly acid (pH 6.5).

TYPE LOCATION: Washoe County, Nevada; in Pleasant Valley west of the junction of Galena Creek and Steamboat Creek and adjacent to U.S. Highway 395; about 2,200 feet south and 800 feet west of the northeast corner of section 7, T. 17 N., R. 20 E.; USGS Washoe City 7.5 minute topographic quadrangle; latitude 39 degrees 21 minutes 17.7 seconds N and longitude 119 degrees 46 minutes 24.6 seconds west; WGS84 Decimal Degrees 39.3550000 latitude, -119.7733333 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually moist in the moisture control section in winter and spring, dry summer and fall unless irrigated; aridic moisture regime that borders on xeric.
Mean annual soil temperature: 9 to 12 degrees C.
Mollic epipedon thickness: 25 to 50 cm.
Depth to redoximorphic features: 50 to 90 cm.

Particle-size control section - Clay content: 3 to 9 percent.
Rock fragments: Averages 5 to 35 percent, dominantly gravel; thin subhorizons with greater than 35 percent rock fragments are present in some pedons. Lithology of fragments are mainly granite.

Ap and A horizons
Value: 4 or 5 dry, 2 or 3 moist.
Chroma: 2 through 4, dry or moist.
Clay content: 5 to 10 percent.
Structure: Granular or subangular blocky: may be massive or single grain in the lower part.
Reaction: Slightly acid or neutral.
Organic matter content: 1 to 3 percent.

C horizons
Hue: 10YR or 7.5YR.
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 through 4, dry or moist.
Texture: Stratified sand to cobbly coarse sandy loam; some pedons have thin strata of sandy clay loam.
Clay content: 2 to 8 percent.
Reaction: Slightly acid or neutral.
Redoximorphic features: Redox concentrations occur as distinct or prominent masses of iron accumulation.

COMPETING SERIES: These are the Dehy, Dithod, and Sunset series.

Dehy soils have a xeric moisture regime that borders on aridic, mean annual soil temperature of 12 to 14 degrees C., and cambic horizons. Dithod soils have 12 to 18 percent clay in the particle-size control section. Sunset soils have a xeric moisture regime that borders on aridic.

GEOGRAPHIC SETTING: Dresslewet soils are on low stream terraces and alluvial fans. These soils formed in alluvium derived from mixed sources, but with a strong influence from granitic rocks such as granite and granodiorite. Slopes are 0 to 4 percent. Elevations range from 1,400 to 1,680 meters. The climate is semiarid with cool, moist winters and warm, dry summers. The mean annual precipitation is 200 to 250 mm, mean annual temperature is 8 to 11 degrees C., and the frost-free period is 90 to 110 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Brockliss, Mottsville, and Ophir soils. Brockliss soils are sandy-skeletal and have endosaturation between 122 and 183 cm. Mottsville soils are sandy and do not have endosaturation within 150 cm of the soil surface. Ophir soils are sandy and have aquic conditions within 50 cm of the soil surface.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained; very low surface runoff; moderately rapid permeability; high saturated hydraulic conductivity. Endosaturation is present with an apparent seasonal high water table between 75 and 100 cm (moderately deep free water occurrence class) from December through May. Cumulative annual duration classes are Common or Persistent. These soils are susceptible to rare flooding for very brief periods year-round or occasional flooding for brief periods between December and May.

USE AND VEGETATION: Dresslewet soils are used for pasture, meadow hay, and small grain production. The vegetation is principally meadow hay and pasture grasses.

DISTRIBUTION AND EXTENT: Western Nevada. These soils are not extensive. MLRA 26.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California.

SERIES ESTABLISHED: Washoe County, Nevada, 2010.

REMARKS: This series encompasses previously correlated wet phases of the Dressler series.
Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 48 cm (Ap and A horizons).
Endosaturation feature - The condition of ground water with an upper boundary between 76 and 100 cm at certain times during normal years (parts of the C2 horizon).
Particle size control section - The zone from 25 to 100 cm (C1 horizon and parts of the A and C2 horizons).

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National Cooperative Soil Survey
U.S.A.