LOCATION CANINECREEK             CA

Established Series
WRR
04/2015

CANINECREEK SERIES

The Caninecreek series consists of very deep, well drained soils that formed in alluvium from mixed rock sources. Caninecreek soils are on floodplains and alluvial fans. Slopes range from 1 to 5 percent. The mean annual precipitation is about 16 inches, and the mean annual temperature is about 60 degrees F.

TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, thermic Typic Haploxerolls

TYPICAL PEDON: Caninecreek fine sandy loam, on a south west facing 2 percent slope under a cover of lawn grass at an elevation of 154 feet (47 m). When described the soil was moist throughout. (Colors are for dry soil unless otherwise noted).

1--0 to 7 inches, (0 to 18 cm); dark grayish brown (10YR 4/2) broken face fine sandy loam, very dark brown (10YR 2/2) broken face moist; 12 percent clay; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; many very fine roots; many very fine interstitial pores; 5 percent rounded indurated 2 to 75 millimeter mixed rock fragments; moderately alkaline, pH 7.9 by pH meter 1:1 water; clear smooth boundary.

A2--7 to 14 inches, (18 to 36 cm); grayish brown (10YR 5/2) broken face fine sandy loam, very dark grayish brown (10YR 3/2) broken face moist; 10 percent clay; weak fine subangular blocky structure; slightly hard, very friable, nonsticky, slightly plastic; many very fine roots; many very fine interstitial pores; 10 percent rounded indurated 2 to 75 millimeter mixed rock fragments; moderately alkaline, pH 7.9 by pH meter 1:1 water; abrupt smooth boundary.

A3--14 to 19 inches, (36 to 47 cm); grayish brown (10YR 5/2) broken face fine sandy loam, dark grayish brown (10YR 4/2) broken face moist; 8 percent clay; weak fine subangular blocky structure; slightly hard, very friable, nonsticky, nonplastic; few very fine roots; many very fine interstitial pores; 5 percent rounded indurated 2 to 75 millimeter mixed rock fragments; slightly alkaline, pH 7.6 by pH meter 1:1 water; abrupt smooth boundary. (Combined thickness of A horizons is 24 to 80 centimeters thick)

2Ab--19 to 28 inches, (47 to 70 cm); gray (10YR 5/1) broken face fine sandy loam, dark gray (10YR 4/1) broken face moist; 18 percent clay; weak medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; few very fine roots; common very fine interstitial pores; 5 percent faint silt coats on all faces of peds; 50 percent medium brown (10YR 5/3), dry, and brown(10YR 4/3), moist, masses of oxidized iron in matrix; 1 percent rounded indurated 2 to 75 millimeter mixed rock fragments; slightly alkaline, pH 7.6 by pH meter 1:1 water; clear smooth boundary. (10 to 23 centimeters thick)

2Cb1--28 to 36 inches, (70 to 91 cm); yellowish brown (10YR 5/4) broken face fine sandy loam, brown (10YR 4/3) broken face moist; 16 percent clay; weak medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; few very fine roots; few very fine interstitial pores; 5 percent faint silt coats on all faces of peds; 20 percent medium gray (10YR 5/1), dry, and dark gray (10YR 4/1), moist, iron depletions in matrix; 1 percent rounded indurated 2 to 75 millimeter mixed rock fragments; slightly alkaline, pH 7.7 by pH meter 1:1 water; clear smooth boundary.

2Cb2--36 to 46 inches, (91 to 118 cm); light brownish gray (10YR 6/2) broken face fine sandy loam, dark grayish brown (10YR 4/2) broken face moist; 15 percent clay; weak medium subangular blocky structure; hard, friable, slightly sticky, slightly plastic; few very fine roots; few very fine interstitial pores; 5 percent faint silt coats on all faces of peds; 30 percent medium yellowish brown (10YR 5/6), dry, and yellowish brown (10YR 5/4), moist, masses of oxidized iron in matrix; 1 percent rounded indurated 2 to 75 millimeter mixed rock fragments; slightly alkaline, pH 7.8 by pH meter 1:1 water; abrupt smooth boundary. (Combined thickness of the 2C horizons is 38 to 52 centimeters thick)

3C--46 to 59 inches, (118 to 150 cm); dark grayish brown (10YR 4/2) broken face extremely gravelly sandy loam, very dark grayish brown (10YR 3/2) broken face moist; 13 percent clay; massive; loose, loose, nonsticky, nonplastic; few very fine roots; many very fine interstitial pores; 5 percent subrounded indurated 75 to 254 millimeter mixed rock fragments and 70 percent subrounded indurated 2 to 75 millimeter mixed rock fragments; slightly alkaline, pH 7.6 by pH meter 1:1 water;

TYPE LOCATION: Santa Clara County, California, Hellyer County Park on Hellyer Avenue, San Jose, south of Hellyer Avenue on north west end of lawn, west of waste water mounds., in an unsectionized area of Township 7s, Range 2e, 4127003 UTM Northing, 605267 UTM Easting, Zone 10, NAD83 - U.S.G.S Quad: San Jose East, California; WGS84 37.2836722, -121.8125028.

RANGE IN CHARACTERISTICS: Depth to extremely gravelly substratum (3C horizon) ranges from 52 to 125 cm. The mean annual soil temperature is 58 to 62 degrees F. The particle size control section averages 10 to 16 percent clay and 5 to 35 percent rock fragments, mostly gravels. Mineralogy is mixed. The soil is not calcareous. Organic matter ranges from 1 to 3 percent to a depth of 35 cm.
Flooding hazard is reduced by upstream dams and some low levees, most areas are flooded occasionally during high stream flows.

The A horizon dry color is 10YR 5/3, 5/2, 4/2; 2.5Y 5/3 or 5/2. Moist color is 10YR 4/2, 3/3, 3/2, 2/2; 2.5Y 3/3 or 3/2. Texture is fine sandy loam, sandy loam, loam or sandy clay loam. Clay content ranges from 10 to 26 percent. Rock fragments range from 5 to 25 percent gravel. Reaction ranges from 7.1 to 8.3.

The 2Ab horizon dry color is 10YR 5/3 or 5/1. Moist color is 10YR 4/3 or 4/1. Texture is sandy loam or fine sandy loam. Clay content ranges from 16 to 18 percent. Rock fragments range from 1 to 15 percent gravel. Reaction ranges from 7.6 to 8.0.

The 2Cb horizon dry color is 10YR 6/2, 5/4, 5/3 or 4/2. Moist color is 10YR 4/3, 4/2 or 3/2. Texture is sandy loam or fine sandy loam. Clay content ranges from 8 to 16 percent. Rock fragments range from 1 to 15 percent gravel. Reaction ranges from 7.7 to 7.8.

The 3C horizon dry color is 10YR 5/2, 4/2 or 2.5Y 5/3. Moist color is 10YR 3/2 or 2.5Y 3/3. Texture is very gravelly loamy coarse sand, very gravelly loamy sand, very gravelly sand and very gravelly sandy loam. Clay content ranges from 5 to 14 percent. Rock fragments range from 40 to 70 percent gravel, 0 to 5 percent cobbles. Reaction ranges from 7.6 to 8.2.

COMPETING SERIES: These are the Acampo, Charger, Ironshot, Pfeiffer, San Andreas, Tokay, Veritas and Walong series. Acampo soils have a duripan within 40 inches. Charger soils occur in MLRA 17 with a climatic difference between mean summer and winter air temperatures of 30 degrees, and are moderately well drained. Ironshot soils are on fluviomarine terraces and have ironstone nodules. Pfeiffer soils have a paralithic contact below 40 inches. San Andreas and Walong soils have a paralithic contact between 20 and 40 inches. Tokay soils have Bt horizons and do not have a very gravelly substratum. Veritas soils have duripans below 40 inches.

GEOGRAPHIC SETTING: Caninecreek soils are on floodplains and alluvial fans. Slopes are 1 to 5 percent. These soils formed in alluvium weathered from mixed rock sources. Elevation is 60 to 220 feet. Mean annual precipitation is 14 to 18 inches. The mean annual temperature is 58 to 62 degrees F. Mean winter temperature is about 51 degrees F. and Mean summer temperatures is about 69 degrees F. The difference between mean summer and mean winter temperatures is about 18 degrees. Frost free season is 275 to 325 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Elder and Elpaloalto soils. The Elder soils have a mollic epipedon more than 50 cm thick and do not have a very gravelly substratum, and the Elpaloalto soils have fine-silty textural control sections.

DRAINAGE AND PERMEABILITY: Well drained; moderately rapid permeability. The soils are rarely flooded for short periods in December through February.

USE AND VEGETATION: This soil is used for recreation, watershed and wildlife habitat. Vegetation is cottonwood, willow, oak and annual grasses and forbs.

DISTRIBUTION AND EXTENT: The soils are inextensive and are mapped in Santa Clara county. Major Land Resource Area: 14 -- Central California Coastal Valleys

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

SERIES ESTABLISHED: Santa Clara County, California. Source of name is from Coyote creek.

REMARKS:
Particle Size Control Section for this pedon: 10 to 39 in. (25 to 100 cm)
Diagnostic horizons and features recognized in this pedon are:
Mollic Epipedon: 0 to 14 inches (0 to 36 cm)

The soil moisture control section is dry in all parts from about May 1 to November 1 (about 180 days).

These soils are separated from the Elder soils on the presence of a very gravelly substratum, which has a top boundary that ranges in depth from 52 to 125 centimeters.

ADDITIONAL DATA:
--USER SITE ID: 07ca085641466

---

National Cooperative Soil Survey
U.S.A.