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• <br /> 81-D Colona silty clay loam, 6 to 12 percent slopes <br /> Position: Fans, terraces, and swales <br /> Drainage: Well drained, unless influenced by foreign water <br /> Soil Profile: Texture Thickness Permeabiity <br /> Surface: silty clay loam 0 to 3 inches moderately slow <br /> <br /> Subsoil: heavy silty 3 to 60 inches slow (0.06 to <br /> clay loam 0.2"/hr.) <br /> Underlying material,is silty clay loam to 60 inche s or more. Depth <br /> to bedrock is greater than 60 inches. <br /> Available water capacity for the 60" rooting depth is 9.8 inches. <br /> ~~'ater table is greater than 72 inches. <br /> Erosion hazard is high from water and moderate from wind. Frequency <br /> of flooding is none. <br /> Capability Unit: IV irrigated; VI nonirrigated <br />• Range Site: Clayey foothills <br /> Normal production: 900 lbs./acr e dry forage <br /> weight <br /> Othet Features: <br /> Rapid runoff. <br /> Deep gullies form where surface runoff accumulat es. <br /> Some piping erosion occurs. <br /> pH is 7.4-9.0. <br /> Salinity is 2-8 Mmhos/cm. <br /> Shrink-swell potential is moderate to high. <br /> Risk of corrosion is high for uncoated steel and moderate for <br /> concrete. <br /> Potential frost action is low. <br /> Poor for roadfill - low strength, shrink-swell. <br /> Unsuited for sand and gravel and poor as source for topsoil - too <br /> clayey. <br /> <br /> <br />