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Fremont County Area, Colorado <br />3—Aquic Ustifluvents <br />Map Unit Setting <br />National map unit symbol: jqj0 <br />Elevation: 4,950 to 5,100 feet <br />Mean annual precipitation: 11 to 13 inches <br />Mean annual air temperature: 51 to 53 degrees F <br />Frost-free period: 155 to 170 days <br />Map Unit Composition <br />Aquic ustifluvents and similar soils: 95 percent <br />Minor components: 5 percent <br />Estimates are based on observations, descriptions, and transects of the mapunit. <br />Description of Aquic Ustifluvents <br />Setting <br />Landform: Flood plains, stream terraces <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent material: Stratified alluvium <br />Typical profile <br />A - 0 to 13 inches: loam <br />Cg1 - 13 to 40 inches: stratified fine sandy loam to loam <br />Cg2 - 40 to 60 inches: very gravelly sand <br />Properties and qualities <br />Slope: 0 to 1 percent <br />Depth to restrictive feature: More than 80 inches <br />Natural drainage class: Moderately well drained <br />Runoff class: Very low <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately high to <br />high (0.60 to 6.00 in/hr) <br />Depth to water table: About 12 to 48 inches <br />Frequency of flooding: Occasional <br />Frequency of ponding: None <br />Calcium carbonate, maximum in profile: 10 percent <br />Salinity, maximum in profile: Very slightly saline to strongly saline (2.0 to 16.0 <br />mmhos/cm) <br />Available water storage in profile: Moderate (about 6.5 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 4w <br />Land capability classification (nonirrigated): 6c <br />Hydrologic Soil Group: B <br />Hydric soil rating: No <br />Minor Components <br />Other soils <br />Percent of map unit: 5 percent <br />Hydric soil rating: No <br />Custom Soil Resource Report <br />15