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• <br /> SOILS DESCRIPTION <br /> ADAMS COUNTY, COLORADO <br /> • SANDY ALLUVIAL LAND (Sm) consists of an unstable accumulation of <br /> gravelly and sandy alluvium. It is in and adjacent to beds of <br /> intermittent streams throughout the eastern three-fourths of Adams <br /> County. During periods of heavy rain , the streambeds are subject to <br /> flooding, and channels are relocated and sediment is shifted and <br /> redeposited at slightly different locations. During dry spells , this <br /> • land type is extremely droughty. <br /> Sandy alluvial land consists of material that was transported by <br /> water from the sand and gravel beds in or adjacent to the area. It is <br /> stratified because of periodic flooding. Thin lenses or small pockets <br /> of silt , clay, and sand are also mixed with the gravel . <br /> This land type differs from Wet alluvial land primarily in that <br /> i • it is coarser textured throughout and is not affected by a water <br /> table . <br /> Sandy alluvial land is either barren or has only a sparse cover <br /> of weeds. It is used for grazing along with the better rangeland <br /> adjacent to it. Capability unit VIIw-1 , nonirrigated; not placed in a <br /> range site; tree planting suitability group 4 . <br /> • i <br /> • <br /> • <br /> • <br /> SOIL SURVEY OF ADAMS COUNTY, COLORADO; USDA, Soil Conservation <br /> Service in cooperation with Colorado Agricultural Experiment Station , <br /> • October 1974 . <br /> • <br />