2019-06-14_PERMIT FILE - M2019036 (2)

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Cheyenne County, Colorado 17—Haverson loam, 0 to 1 percent slopes Map Unit Setting • National map unit symbol: 3542 • Elevation: 3,500 to 6,000 feet • Mean annual precipitation: 12 to 17 inches • Mean annual air temperature: 46 to 54 degrees F • Frost-free period: 125 to 180 days • Farmland classification: Prime farmland if irrigated and either protected from flooding or not frequently flooded during the growing season Map Unit Composition • Haverson, occasionally flooded, and similar soils: 80 percent • Minor components: 20 percent • Estimates are based on observations, descriptions, and transects of the mapunit. Description of Haverson, Occasionally Flooded Setting • Landform: Flood plains • Down-slope shape: Linear • Across-slope shape: Linear • Parent material: Alluvium Typical profile • A - 0 to 14 inches: loam • C - 14 to 60 inches: stratified sand to clay loam Properties and qualities • Slope: 0 to 1 percent • Depth to restrictive feature: More than 80 inches • Natural drainage class: Well drained • Runoff class: Low • Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr) • Depth to water table: More than 80 inches • Frequency of flooding: Occasional • Frequency of ponding: None • Calcium carbonate, maximum in profile: 15 percent • Gypsum, maximum in profile: 1 percent • Salinity, maximum in profile: Nonsaline to moderately saline (0.0 to 8.0 mmhos/cm) • Available water storage in profile: High (about 9.6 inches) Interpretive groups • Land capability classification (irrigated): 2w • Land capability classification (nonirrigated): 4w • Hydrologic Soil Group: B • Ecological site: Sandy Bottomland (R067BY031CO) • Hydric soil rating: No