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Pueblo Area, Colorado, Parts of Pueblo and Custer Counties <br />Lm—Las Animas fine sandy loam, 0 to 2 percent slopes, frequently <br />flooded <br />Map Unit Setting <br />National map unit symbol: 2xyrg <br />Elevation: 4,260 to 5,900 feet <br />Mean annual precipitation: 10 to 12 inches <br />Mean annual air temperature: 50 to 54 degrees F <br />Frost-free period: 130 to 170 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Las animas, frequently flooded, and similar soils: 85 percent <br />Minor components: 15 percent <br />Estimates are based on observations, descriptions, and transects of the mapunit. <br />Description of Las Animas, Frequently Flooded <br />Setting <br />Landform: Flood plains <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent material: Alluvium <br />Typical profile <br />A - 0 to 6 inches: fine sandy loam <br />Bw - 6 to 18 inches: fine sandy loam <br />Cg1 - 18 to 41 inches: fine sandy loam <br />Cg2 - 41 to 79 inches: stratified fine sandy loam to silty clay loam <br />Properties and qualities <br />Slope: 0 to 2 percent <br />Depth to restrictive feature: More than 80 inches <br />Natural drainage class: Somewhat poorly drained <br />Runoff class: Very high <br />Capacity of the most limiting layer to transmit water (Ksat): Moderately high to <br />high (0.20 to 6.00 in/hr) <br />Depth to water table: About 4 to 11 inches <br />Frequency of flooding: Frequent <br />Frequency of ponding: None <br />Calcium carbonate, maximum in profile: 5 percent <br />Gypsum, maximum in profile: 5 percent <br />Salinity, maximum in profile: Very slightly saline to strongly saline (2.0 to 16.0 <br />mmhos/cm) <br />Sodium adsorption ratio, maximum in profile: 2.0 <br />Available water storage in profile: Moderate (about 7.2 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 6w <br />Land capability classification (nonirrigated): 6w <br />Hydrologic Soil Group: A/D <br />Ecological site: Salt Meadow LRU's A & B (R069XY030CO) <br />Hydric soil rating: No <br />Custom Soil Resource Report <br />27