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Map Unit Description—Weld County,Colorado,Southern Part <br /> Mean annual precipitation: 12 to 18 inches <br /> Mean annual air temperature: 45 to 55 degrees F <br /> Frost-free period: 80 to 155 days <br /> Farmland classification: Prime farmland if drained and either <br /> protected from flooding or not frequently flooded during the <br /> growing season <br /> Map Unit Composition <br /> Aquolls and similar soils: 55 percent <br /> Aquents, gravelly substratum, and similar soils:30 percent <br /> Minor components: 15 percent <br /> Estimates are based on observations, descriptions, and transects of <br /> the mapunit. <br /> Description of Aquolls <br /> Setting <br /> Landform:Swales,flood plains, streams <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material: Recent alluvium <br /> Typical profile <br /> H1 -0 to 48 inches: loam <br /> H2-48 to 60 inches: gravelly sand <br /> Properties and qualities <br /> Slope:0 to 3 percent <br /> Depth to restrictive feature: More than 80 inches <br /> Drainage class: Poorly drained <br /> Runoff class: Low <br /> Capacity of the most limiting layer to transmit water <br /> (Ksat): Moderately high to high (0.20 to 2.00 in/hr) <br /> Depth to water table:About 6 to 48 inches <br /> Frequency of flooding: FrequentNone <br /> Frequency of ponding: None <br /> Maximum salinity: Nonsaline to slightly saline(0.0 to 4.0 <br /> mmhos/cm) <br /> Available water supply, 0 to 60 inches: Moderate(about 8.0 <br /> inches) <br /> Interpretive groups <br /> Land capability classification (irrigated): None specified <br /> Land capability classification(nonirrigated): 6w <br /> Hydrologic Soil Group: D <br /> Ecological site: R067BY035CO-Salt Meadow <br /> Hydric soil rating: Yes <br /> Description of Aquents,Gravelly Substratum <br /> Setting <br /> Landform: Stream terraces <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Natural Resources Web Soil Survey 5/15/2023 <br /> Conservation Service National Cooperative Soil Survey Page 3 of 5 <br />