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C~ <br />LAND USE <br /> <br />An irrigated alfalfa meadow comprises the Nihill channery loam, 1 <br />to 6 percent slopes, at the north crossing. The Nihill is <br />considered marginal for irrigation (Clayton Spears, SCS soil <br />scientist, Garfield and Mesa Counties, personal communications). <br />It is in class VIe. It is considered very erosive. The water <br />supply is not considered dependable; in some years the alfalfa is <br />cut for hay and in others it is probably used only for pasture. <br />The Nihill channery loam, 1 to 6 percent slopes, is also irrigated <br />in the south crossing area. It is in improved pasture. <br />The other soils are used primarily as range and wildlife habitat. <br />The thick toeslopes deposits of channery sandy clay loam in the <br />subsoils of the Nihill are used as road base material by the <br />county. It makes fair subgrade material. <br />SOIL CLASSIFICATION <br />The classification of the soils of the north and south crossing <br />are shown in Table 4. <br />TABLE 4 <br />CLASSIFICATION OF MAJOR SOILS <br />Soil <br />Series <br />Family <br />Subgroup <br />Nihill Loamy-skeletal, mixed (calcareous), <br />mesic Ustic Torriorthent <br />Detra Fine-loamy, mixed Pachic Argiboroll <br />Torri- <br />fluvents various various To r.rifluvents <br />11 <br />