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Custom Soil Resource Report <br /> San Joaquin County, California <br /> 149—Devries sandy loam, drained, 0 to 2 percent slopes, MLRA 16 <br /> Map Unit Setting <br /> National map unit symbol: 2x412 <br /> Elevation: 0 to 90 feet <br /> Mean annual precipitation: 18 to 18 inches <br /> Mean annual air temperature: 61 to 62 degrees F <br /> Frost-free period: 343 to 345 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Devries and similar soils: 85 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Devries <br /> Setting <br /> Landform: Rims on basin floors <br /> Landform position (three-dimensional): Tread, talf <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Coarse-loamy alluvium derived from igneous, metamorphic and <br /> sedimentary rock <br /> Typical profile <br /> Ap -0 to 4 inches: sandy loam <br /> A -4 to 15 inches: sandy loam <br /> AB - 15 to 21 inches: sandy loam <br /> Bt- 21 to 27 inches: sandy loam <br /> Bkqm -27 to 47 inches: cemented sandy loam <br /> C-47 to 62 inches: sandy loam <br /> Properties and qualities <br /> Slope: 0 to 2 percent <br /> Depth to restrictive feature: 20 to 40 inches to duripan <br /> Natural drainage class: Somewhat poorly drained <br /> Runoff class: Very low <br /> Capacity of the most limiting layer to transmit water(Ksat): Very low to moderately <br /> low (0.00 to 0.14 in/hr) <br /> Depth to water table: About 60 inches <br /> Frequency of flooding: Rare <br /> Frequency of ponding: None <br /> Calcium carbonate, maximum in profile: 4 percent <br /> Salinity, maximum in profile: Nonsaline (0.1 to 0.7 mmhos/cm) <br /> Sodium adsorption ratio, maximum in profile: 10.0 <br /> Available water storage in profile: Low (about 3.5 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 3w <br /> Land capability classification (nonirrigated): 4w <br /> Hydrologic Soil Group: C <br /> Hydric soil rating: Yes <br /> 13 <br />