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Custom Soil Resource Report <br /> San Joaquin County, California <br /> 252—Stomar clay loam, 0 to 2 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: hhww <br /> Elevation: 40 to 300 feet <br /> Mean annual precipitation: 10 inches <br /> Mean annual air temperature: 61 degrees F <br /> Frost-free period: 270 days <br /> Farmland classification: Prime farmland if irrigated <br /> Map Unit Composition <br /> Stomar 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 Stomar <br /> Setting <br /> Landform: Alluvial fans <br /> Landform position (two-dimensional): Footslope <br /> Landform position (three-dimensional): Tread <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Alluvium derived from sedimentary rock <br /> Typical profile <br /> A - 0 to 17 inches: clay loam <br /> Btk- 17 to 47 inches: clay <br /> Btk-47 to 60 inches: clay loam <br /> Properties and qualities <br /> Slope: 0 to 2 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Natural drainage class: Well drained <br /> Runoff class: High <br /> Capacity of the most limiting layer to transmit water(Ksat): Moderately low to <br /> moderately high (0.06 to 0.20 in/hr) <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Calcium carbonate, maximum in profile: 10 percent <br /> Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0 <br /> mmhos/cm) <br /> Available water storage in profile: High (about 10.2 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): 2s <br /> Land capability classification (nonirrigated): 4s <br /> Hydrologic Soil Group: C <br /> Hydric soil rating: No <br /> 13 <br />