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Map Unit Description• Aquolls and Aquents, gravelly substratum —Weld County, <br />Colorado, Southern Part <br />USDA Natural Resources <br />Conservation Service <br />Weld County, Colorado, Southern Part <br />3627 — Aquolls and Aquents, gravelly substratum <br />Map Unit Setting <br />Elevation: 4,000 to 7,200 feet <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 />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 />Description of Aquolls <br />Setting <br />Landform: Swales, streams, flood plains <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Recent alluvium <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 />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: Frequent <br />Frequency of ponding: None <br />Maximum salinity: Nonsaline to very slightly saline (0.0 to 4.0 mmhos/ <br />cm) <br />Available water capacity: Moderate (about 8.0 inches) <br />Interpretive groups <br />Land capability (nonirrigated): 6w <br />Ecological site: Salt Meadow (R067BY035C0) <br />Typical profile <br />0 to 48 inches: Loam <br />48 to 60 inches: Gravelly sand <br />Description of Aquents, Gravelly Substratum <br />Setting <br />Landform: Stream terraces <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Recent alluvium <br />Properties and qualities <br />Slope: 0 to 3 percent <br />Web Soil Survey <br />National Cooperative Soil Survey <br />2/15/2012 <br />Page 1 of 2 <br />