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Custom Soil Resource Report <br /> Weld County, Colorado, Northern Part <br /> 20—Cascajo gravelly sandy loam, 5 to 20 percent slopes <br /> Map Unit Setting <br /> National map unit symbol: 35z3 <br /> Elevation: 4,000 to 5,000 feet <br /> Mean annual precipitation: 11 to 13 inches <br /> Mean annual air temperature: 52 to 54 degrees F <br /> Frost-free period: 120 to 160 days <br /> Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> Cascajo 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 Cascajo <br /> Setting <br /> Landform: Breaks, ridges <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Calcareous gravelly alluvium <br /> Typical profile <br /> H1 - 0 to 3 inches: gravelly sandy loam <br /> H2-3 to 24 inches: very gravelly loamy sand <br /> H3-24 to 60 inches: very gravelly sand <br /> Properties and qualities <br /> Slope: 5 to 20 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Natural drainage class: Excessively drained <br /> Runoff class: Low <br /> Capacity of the most limiting layer to transmit water(Ksat): High (2.00 to 6.00 in/hr) <br /> Depth to water table: More than 80 inches <br /> Frequency of flooding: None <br /> Frequency of ponding: None <br /> Calcium carbonate, maximum in profile: 25 percent <br /> Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) <br /> Available water storage in profile: Low(about 3.9 inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): None specified <br /> Land capability classification (nonirrigated): 7s <br /> Hydrologic Soil Group: A <br /> Ecological site: Gravel breaks (R067BY063C0) <br /> Minor Components <br /> Stoneham <br /> Percent of map unit: 14 percent <br /> Otero <br /> Percent of map unit: 1 percent <br /> 13 <br />