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5) The steep and rocky terrain and short growing season preclude cultivation. These findings concur with the SCS opinion. •y I~, Tributaries to East Roatcap, West Roatcap and Terror Creek West Tributary to East Roatcap Creek The headwaters area of this tributary is a steep walled catchment basin which should accumulate a fair amount of snow and produce an extended period of snowmelt. There is probably enough flow when temperatures are high to cause flooding along the restricted draw. The SCS map of this tributary designates the soils as being fl wents; flooded, with the source of the soil being from a variety of rocks and subject to sporadic movement of sediments by fast moving waters. Potential sources of sediments are outcrops of the Mesaverde formation on the steep slopes at the west end of the drainage and landslide deposits on both sides. Although this area, like most of the upland draws, has continous subflow seepage, the soil appears to be deep and well drained. Portions of the bottom and gentle side slopes of this tributary ha•~e less shrubs than the dense growth of oak brush characteristic of the steeper upland areas. In these clearings the vegetation consists primarily of a mixture of perennial and annual grasses and (orbs. Dominant species include bluegrass, western wheatgrass, smooth brume (Bromus inerme), and redtop (Agrostis sue). There were no plant species that were indicative of subirrigation. The areal extent of these clearings along this tributary totals approximately 40 acres. Domestic livestock grazing has been the historical use of this area. It also serves as wildlife habitat. The above discussion indicates that the west tributary to East itoatcap Creek is not an alluvial valley floor. The soils in the drainage are collw ia] rather than alluvial in nature and are formed by deposits caused by sheet