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Custom Soil Resource Report <br /> Weld County, Colorado, Southern Part <br /> 3—Aquolls and Aquents, gravelly substratum <br /> Map Unit Setting <br /> National map unit symbol. 3627 <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 /> Farmland classification: Prime farmland if drained and either protected from flooding <br /> or not frequently flooded during the 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 the mapunit. <br /> Description of Aquolls <br /> Setting <br /> Landform: Flood plains,swales,streams <br /> Down-slope shape Linear <br /> Across-slope shape Linear <br /> Parent material: Recent alluvium <br /> Typical profile <br /> H1 -0 to 46 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 /> Natural drainage class Poorly drained <br /> Runoff class: Low <br /> Capacity of the most limiting layer to transmit water(Ksat) Moderately high to <br /> 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 /> Salinity,maximum in profile- Nonsaline to slightly saline(0.0 to 4 0 mmhoslcm) <br /> Available water storage in profile: Moderate(about 8 0 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: Salt Meadow(R067BY035CO) <br /> Hydric soil rating- Yes <br /> Description of Aquents,Gravelly Substratum <br /> Setting <br /> Landform- Stream terraces <br /> Down-slope shape- Linear <br /> 18 <br />