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Web Soil Survey <br />I Information xl <br />Map Unit Description <br />Kit Carson County, Colorado Version date: 1/28/2008 1:43:46 PM <br />56-Norka-Colby silt loams, 5 to 15 percent slopes <br />Map Unit Setting <br />Elevation: 3,900 to 4,600 feet <br />Mean annual precipitation: 15 to 17 inches <br />Mean annual air temperature: 48 to 52 degrees F <br />Frost-free period: 148 to 152 days <br />Map Unit Composition <br />Norka and similar soils: 60 percent <br />Co/by and similar soils: 30 percent <br />Description of Norka <br />Setting <br />Landform: Hills <br />Landform position (three-dimensiona/): Side slope <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent materia/: Fine-silty loess, calcareous <br />Properties and qualities <br />Slope: 5 to 9 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high <br />(0.60 to 2.00 in/hr) <br />Depth to water tab/e: More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Calcium carbonate, maximum content: 15 percent <br />Availab/e water capacity: High (about 10.8 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 6e <br />Land capability (nonirrigated): 6e <br />Ecological site: Loamy Plains (R072XYOO1C0) <br />Typical profile <br />0 to 7 inches: Silt loam <br />7 to 14 inches: Silt loam <br />14 to 18 inches: Silt loam <br />18 to 60 inches: Silt loam <br />Description of Colby <br />Setting <br />Landform: Hills <br />Landform position (three-dimensiona/): Side slope <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent materia/: Fine-silty loess, calcareous <br />Page 1 of 2 <br />http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey.aspx 03/04/2008 <br />