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Map Unit Description:Capay clay,wet,0 to 2 percent slopes---San Joaquin County,California Seeds of Life <br /> San Joaquin County, California <br /> 121—Capay clay, wet, 0 to 2 percent slopes <br /> Map Unit Setting <br /> National map unit symbol. hhrn <br /> Elevation: 30 to 140 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 /> Capay and similar soils. 85 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of the <br /> mapunit. <br /> Description of Capay <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 20 inches: clay <br /> Bk-20 to 44 inches: clay <br /> Bk- 44 to 60 inches: silty 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. Moderately well drained <br /> Runoff class. High <br /> Capacity of the most limiting layer to transmit water(Ksat): <br /> Moderately low to moderately high (0.06 to 0.20 in/hr) <br /> Depth to water table. About 48 to 72 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Calcium carbonate, maximum in profile: 5 percent <br /> Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to <br /> 4.0 mmhos/cm) <br /> Sodium adsorption ratio, maximum in profile: 10.0 <br /> Available water storage in profile: High (about 9.4 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated). 2w <br /> Land capability classification (nonirrigated): 4w <br /> su,\ Natural Resources Web Soil Survey 3/24/2015 <br /> Conservation Service National Cooperative Soil Survey Page 1 of 2 <br />