Laserfiche WebLink
Map Unit Description.Tahana-Legault-Rock outcrop complex,30 to 70 percent slopes--- East Leavenworth,Tahana Legault <br /> Georgetown Area,Colorado, Parts of Clear Creek,Gilpin,and Park Counties Rock outcrop complex,30 to 70 <br /> percent slopes <br /> Georgetown Area, Colorado, Parts of Clear Creek, <br /> Gilpin, and Park Counties <br /> 56—Tahana-Legault-Rock outcrop complex, 30 to 70 percent <br /> slopes <br /> Map Unit Setting <br /> National map unit symbol: k6jm <br /> Elevation: 7,400 to 9,500 feet <br /> Mean annual precipitation: 17 to 25 inches <br /> Mean annual air temperature: 37 to 41 degrees F <br /> Frost-free period: 25 to 75 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Tahana and similar soils:40 percent <br /> Legault and similar soils: 30 percent <br /> Rock outcrop: 25 percent <br /> Minor components: 5 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> Description of Tahana <br /> Setting <br /> Landform: Mountain slopes <br /> Landform position (two-dimensional): Backslope <br /> Down-slope shape: Convex <br /> Across-slope shape: Convex <br /> Parent material: Micaceous sandy colluvium over residuum <br /> weathered from igneous and metamorphic rock <br /> Typical profile <br /> Oi- 0 to 1 inches. slightly decomposed plant material <br /> Oa- 1 to 2 inches: moderately decomposed plant material <br /> Bw- 2 to 8 inches: gravelly sandy loam <br /> BC- 8 to 20 inches: very gravelly loamy sand <br /> C- 20 to 24 inches: extremely gravelly loamy sand <br /> Cr- 24 to 28 inches: weathered bedrock <br /> Properties and qualities <br /> Slope: 30 to 70 percent <br /> Surface area covered with cobbles, stones or boulders: 8.0 percent <br /> Depth to restrictive feature: 20 to 40 inches to paralithic bedrock <br /> Drainage class: Somewhat excessively drained <br /> Runoff class: Medium <br /> Capacity of the most limiting layer to transmit water <br /> (Ksat): Moderately low to high (0.06 to 2.00 in/hr) <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> viaNatural Resources Web Soil Survey 12/9/2024 <br /> Conservation Service National Cooperative Soil Survey Page 1 of 3 <br />