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_ drainages, including Steven's Gulch. The main streams of East Roatcao, West <br />Roatcap, and Terror Creek transport the finer sediments into the North Fork of <br />~: <br />the Cl;nnison River Valley. Eden to the present, however, the erosional history <br />is one of degradation and the sediments being depositxi are mostly from sheet <br />erosion, soil creep and minor movement of soil down the stream channels during <br />spring runoff and storm events, in recent time, minor amounts of fine sediments <br />have been deposited along gentle stretches of valley floors, where Mesaverde <br />strata outcrops have formed gentler slopes along upland drainages, and in <br />isolated flat areas, small catchment basins, and low gradient drainages in the <br />landslide topography. Plate 2 illustrates the surficial geology of the area. <br />DISCUSSION OF SPECIFIC DRAINAGES <br />Following is a discussion of each drainage and major tributaries in and <br />adjacent to the proposed permit area. Stevens Gulch and East Roatcap Creek are <br />within the permit area; all others are located adjacent to the permit area. The <br />major drainages are discussed first with their tributaries examined separately. <br />• ;; The location of each area is shown on Plate 1. <br />Steven's 3ulch <br />A thorough review of the Stevens Gulch drainage was presented by Geo-Hydro <br />Consulting, Inc. in their September 7, 1982 report (Volume 4, CWI Permit <br />Application). Because of this initial reconnaissance, Steven's Gulch was not a <br />focus of attention in this investigation. For purposes of review, however, <br />Geo-Hydro concluded from their study that Stevens Gulch and the CWI well field <br />in particular, should not he designated as an alluvial valley floor based on the <br />following reasons: <br />1) Ground water depth measurements indicate that the area <br />identified is not subirrigated for a sufficient period <br />of the year to support agricultural acti•~ities. <br />I •-- <br />