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Map Unit Description:Baller-Rock outcrop complex, 15 to 50 percent slopes---Golden Area, Golden Mine <br /> Colorado,Parts of Denver,Douglas,Jefferson,and Park Counties <br /> Golden Area, Colorado, Parts of Denver, Douglas, <br /> Jefferson, and Park Counties <br /> 9—Baller-Rock outcrop complex, 15 to 50 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: jpqm <br /> Elevation: 5,600 to 6,500 feet <br /> Mean annual precipitation: 15 to 17 inches <br /> Frost-free period: 126 to 142 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Baller and similar soils: 60 percent <br /> Rock outcrop:25 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> Description of Bailer <br /> Setting <br /> Landform: Hogbacks, hillslopes <br /> Landform position (two-dimensional): Backslope <br /> Landform position (three-dimensional): Side slope <br /> Down-slope shape: Linear, convex <br /> Across-slope shape: Linear, convex <br /> Parent material: Noncalcareous, stony, loamy residuum weathered <br /> from sandstone <br /> Typical profile <br /> H1 -0 to 4 inches: very cobbly sandy loam <br /> H2-4 to 14 inches: very cobbly sandy loam <br /> H3- 14 to 18 inches: unweathered bedrock <br /> Properties and qualities <br /> Slope: 15 to 50 percent <br /> Depth to restrictive feature:More than 80 inches <br /> Drainage class:Well drained <br /> Runoff class: Very high <br /> Capacity of the most limiting layer to transmit water <br /> (Ksat): Moderately low to 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 /> Available water capacity:Very low(about 1.0 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): None specified <br /> Land capability classification (nonirrigated): 7s <br /> Hydrologic Soil Group: D <br /> Ecological site: R048AY204CO-Shallow Foothill <br /> USDA Natural Resources Web Soil Survey 2/17/2021 <br /> Conservation Service National Cooperative Soil Survey Page 1 of 3 <br />