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• originating within the lease area and contributing to Terror <br />Creek. These ephemeral drainages, flowing eastward, are <br />connected to several ponds and springs in their upper <br />reaches. <br />Close to the southeast lease boundary water is <br />diverted from Terror Creek into an irrigation ditch (Terror <br />Ditch) to users at Garvin Mesa. <br />Stevens Gulch flows approximately through the center o~ <br />the lease portion. It has a drainage area of about 5.5 mi <br />and is an ephemeral stream. The Stevens Gulch upper reaches <br />lie close to the northern lease boundary and south of the <br />Morrell Cow Camp. The upper Stevens Gulch portion, between <br />the tnorrell Cow Camp and the CWI well field, is very <br />different from ttie lower portion south of the CWI well <br />field. The upper portion has a distinctly lower gradient, a <br />wider valley, and locally contains alluvial deposits of a <br />significant extent. The lower part has a steep gradient, a <br />narrow valley and no alluvial deposits at all. The <br />difference in the gradienC may have been caused by <br />differences in bedrock properties, or, more probably, by the <br />morphological influence of ancient landslides that may have <br />dammed the valley and contributed to the present topography. <br />• The Stevens Gulch valley is followed by the Fitkin Mesa <br />Pipeline Company aqueduct (see Section 3. 9, Buildings and <br />Structures). <br />East Roatcap Creek is an ephemeral stream with a <br />drainage area of about 9 mil. It drains the west part of the <br />lease area. 1'he East koatcap Creek supplies water, via an <br />irrigation ditch (Foote Ditch), to Pitkin Mesa users. In <br />late summer, water is diverted from the Overland Ditch <br />(north of the lease area) to the East Roatcap Creek to <br />improve ttie flows. This drainage, flowing for about 2 miles <br />through the lease area, has a steep gradient and a deeply <br />incised streambed for most of its length. An exception is in <br />its middle part, in the southwest quarter of Section 19 <br />(T135, k92W) where a flatter section has a potential for <br />accummulation of a larger amount of sediments. <br />hest Roatcap Creek flows southwest of the lease area. <br />Tne closest distance from the lease is some 900 feet. The <br />Oak Mesa llitch supplies water to users at Wakefield Mesa. <br />both the creek and irrigation ditch are below the D-seam <br />coal outcrop and ti:ey will not ba influenced by the <br />subsidence. <br />\J <br />- 1-i - <br />