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Saguache County Area. Colorado ~ 4 r I +0. and that of blue grams, threeawn, snakeweed, and rabbitbrush increases. Undesirable weeds and annual plants invade and become more abundant as the range condition declines. Deferred grazing, cross fencing, and stockwater developments are needed to prevent range deterioration and to promote the growth of more desirable plant species. This complex is limited for use as wildlife habitat because of low vegetative production. On nonirrigated areas, these soils are best suited to habitat for such wildlife as antelope, jackrabbit, cottontail, and coyote. If wildlife use is planned, the value of these soils to wildlife can be improved by livestock water developments and grazing management practices. It the soil is irrigated, crop residue may provide food for ring-necked pheasant and waterfowl. These soils are suited to homesite development. The main limitation is the large content of cobblestones in the Garita soils. The sand and gravel substratum of the Platoro soils can cause seepage and pollution of ground water if these soils are used for sewage lagoons or trench-type landfills. This complex is in capability subclasses IVe, irrigated, and Vlle, nonirrigated. The Garita soils are in the Limy Bench range site, and the Platoro soils are in the Mountain Outwash range site. 27-Gelkie loam, 3 to 25 percent slopes. This deep, well drained soil is on toe slopes and mountain side slopes. Gelkie soils formed in colluvium from igneous rock. This soil is at elevations of 8,400 to 9,500 feet. The average annual precipitation is 77 ruches; the average annual air temperature is 36 degrees F; and the frost- tree season is about 60 days InCludetl in This unit are a few Small areas O1 Bushvalley cobbly loam, Decross loam, and Seitz very stony loam. Typically, the surface Layer o! this Gelkie sort is grayish brown loam about 4 inches thick. The next layer is grayish brown clay loam about 9 inches thick. The subsoil is brown gravelly clay loam about 11 inches thick. The substratum to a depth of 60 inches or more is calcareous, pale brown gravelly loam and very gravelly loam. Permeability is moderate. Effective rooting depth is 60 inches or more. The available water capacity is high. Surface runoff is medium, and the erosion hazard is moderate. This soil is used as range and wildlife habitat. The potential natural vegetation on this Gelkie soil is dominated by Arizona fescue, western wheatgrass, and needleandthread, with bottlebrush squirreltail, elk sedge, and junegrass in smaller quantities. II the range condition deteriorates, the proportion of western wheatgrass and Arizona fescue decreases, and that of woody torbs, annuals, and bluegrass increases.