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Map Unit Description: San Joaquin -Urban land complex, 0 to 2 percent slopes ---San Joaquin <br />County, California <br />San Joaquin County, California <br />242—San Joaquin -Urban land complex, 0 to 2 percent <br />slopes <br />Map Unit Setting <br />National map unit symbol: hhwk <br />Elevation: 20 to 110 feet <br />Mean annual precipitation: 16 inches <br />Mean annual air temperature: 61 degrees F <br />Frost -free period: 275 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />San joaquin and similar soils: 50 percent <br />Urban land: 35 percent <br />Minor components: 15 percent <br />Estimates are based on observations, descriptions, and transects of <br />the mapunit. <br />Description of San Joaquin <br />Setting <br />Landform: Terraces <br />Landform position {two-dimensional): Shoulder <br />Landform position {three-dimensional): Tread <br />Down-slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Alluvium derived from granitic rock sources <br />Typical profile <br />Ap - 0 to 16 inches: loam <br />2Bt - 16 to 26 inches: clay <br />2Bgm - 26 to 60 inches: indurated <br />Properties and qualities <br />Slope: 0 to 2 percent <br />Depth to restrictive feature: More than 80 inches; 20 to 40 inches to <br />duripan <br />Drainage class: Moderately well drained <br />Runoff class: Very high <br />Capacity of the most limiting layer to transmit water (Ksat): Very low <br />(0.00 in/hr) <br />Depth to water table: More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 <br />mmhoslcm) <br />Available water supply, 0 to 60 inches: Very low (about 2.4 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 3s <br />tSta Natural Resources Web Soil Survey 11/8/2021 <br />Conservation Service National Cooperative Soil Survey Page 1 of 2 <br />