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Map Unit Description:Lone Rods-Breece gravelly sandy loams,2 to 9 percent slopes— Salisbury Gladstone LLC <br /> Georgetown Area,Colorado,Parts of Clear Creek,Gilpin,and Park Counties <br /> Georgetown Area, Colorado, Parts of Clear Creek, <br /> Gilpin, and Park Counties <br /> 27—Lone Rock-Breece gravelly sandy loams, 2 to 9 percent <br /> slopes <br /> Map Unit Setting <br /> National map unit symbol. k6hp <br /> Elevation: 7,700 to 8,500 feet <br /> Mean annual precipitation: 16 to 22 inches <br /> Mean annual air temperature: 36 to 45 degrees F <br /> Frost-free period. 25 to 100 days <br /> Farmland classification: Farmland of statewide importance <br /> Map Unit Composition <br /> Lone rock and similar soils: 55 percent <br /> Breece and similar soils. 35 percent <br /> Minor components: 10 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> Description of Lone Rock <br /> Setting <br /> Landform:Alluvial fans, terraces <br /> Down-slope shape: Concave, linear <br /> Across-slope shape: Linear <br /> Parent material.Alluvium derived from igneous and metamorphic <br /> rock <br /> Typical profile <br /> A-0 to 9 inches: gravelly sandy loam <br /> AC-9 to 13 inches: very gravelly loamy sand <br /> C1 - 13 to 28 inches: very gravelly loamy sand <br /> C2-28 to 60 inches: extremely gravelly sand <br /> Properties and qualities <br /> Slope:2 to 9 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Drainage class:Somewhat excessively drained <br /> Runoff class: Low <br /> Capacity of the most limiting layer to transmit water(Ksat): High <br /> (2.00 to 6.00 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 2.4 inches) <br /> Interpretive groups <br /> Land capability classification(irrigated): None specified <br /> Land capability classification(nonirrigated): 4s <br /> Hydrologic Soil Group: A <br /> usD4 Natural Resources Web Soil Survey 1/5/2021 <br /> 2111111111 Conservation Service National Cooperative Soil Survey Page 1 of 3 <br />