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San Joaquin County, California <br />257—Tokay-Urban land complex, 0 to 2 percent slopes <br />Map Unit Setting <br />National map unit symbol: hhx1 <br />Elevation: 20 to 100 feet <br />Mean annual precipitation: 15 inches <br />Mean annual air temperature: 61 degrees F <br />Frost-free period: 260 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Tokay 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 Tokay <br />Setting <br />Landform:Fan skirts <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 granitic rock sources <br />Typical profile <br />A - 0 to 19 inches: fine sandy loam <br />Bt - 19 to 45 inches: sandy loam <br />C - 45 to 60 inches: fine sandy loam <br />Properties and qualities <br />Slope:0 to 2 percent <br />Depth to restrictive feature:More than 80 inches <br />Drainage class:Well drained <br />Runoff class: Very low <br />Capacity of the most limiting layer to transmit water (Ksat):High <br />(1.98 to 5.95 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 />mmhos/cm) <br />Available water capacity:Moderate (about 7.8 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 1 <br />Land capability classification (nonirrigated): 4c <br />Hydrologic Soil Group: A <br />Map Unit Description: Tokay-Urban land complex, 0 to 2 percent slopes---San Joaquin County, <br />California <br />Natural Resources <br />Conservation Service <br />Web Soil Survey <br />National Cooperative Soil Survey <br />3/4/2021 <br />Page 1 of 2