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Custom Soil Resource Report <br /> 250—Stockton clay, 0 to 2 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: hhwt <br /> Elevation: 0 to 100 feet <br /> Mean annual precipitation: 14 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 /> Stockton 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 Stockton <br /> Setting <br /> Landform: Basin floors <br /> Landform position (two-dimensional): Toeslope <br /> Landform position (three-dimensional): Talf <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Alluvium derived from mixed rock sources <br /> Typical profile <br /> A -0 to 29 inches: clay <br /> Bk1 -29 to 37 inches: clay <br /> Bk2-37 to 42 inches: clay loam <br /> Bkqm -42 to 60 inches: cemented <br /> Properties and qualities <br /> Slope: 0 to 2 percent <br /> Depth to restrictive feature: 40 to 60 inches to duripan <br /> Natural drainage class: Somewhat poorly drained <br /> Runoff class: High <br /> Capacity of the most limiting layer to transmit water(Ksat): Very low (0.00 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: 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: Moderate (about 6.4 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 /> 16 <br />