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<br />diversion facility, studies should be conducted to determine <br />if additional inflows are required to maintain water <br />quali ty . <br /> <br />Final selection of the diversion site should not be <br />made until a detai.led survey along the toe of the right bank <br />is completed in order to verify that adequate hydraulic head <br />exists in the Uncompahgre River adjacent t;o the pond. Also, <br />if final site selEction can be postponed until plans for the <br />potential upstream AB Lateral Project have been finalized, a <br />more informed decision can be made. Even if the elevation <br />along the adjacent. toe is slightly inadeqtiate, the AB <br />Lateral Project could cause a sufficiently high water <br />surface rise to confidently select the adj'acent <br />site. <br /> <br />A primary sedimentation pond or an o:t;fs'tream subsurface <br />collector immediately upstream of the pond appear to be the <br />most economical and environmentally sound means of screening <br />and filtering the needed water. If the offs'tream subsurface <br />collector is identified for further consideration, ground <br />water testing will be necessary to deterr.line subsurface <br />conditions and size the collector system.. <br /> <br />10. Boat Launch. ,:::;unnison River. <br /> <br />The purpose of this section is to review desirable <br />characteristics for a boat launch, to evaluate the city's <br />preferred location for a boat launch faciJ.;ity on the <br />Gunnison River, and to provide aids to asoiis,t the city in <br />the design of the facility. The boat launch facility ,lill <br />permit utilization of the recreational part of the proposed <br />Confluence Park by local residents and tourists. <br /> <br />The boat launch facility on the Gunnison River should <br />have certain feature characteristics, among 'them: <br /> <br />o Ability to handle about 40 craft per day. <br />o Ease of use by .the handicapped. <br />o Ease of access by motorized towing vehicles. <br />o Ability to launch the largest sized hunian'-powered craft. <br />o Accessibility for both launching and t:aking out of craft. <br />o Sufficient space to handle groups of craft, especially <br />incoming from the river. <br />o Sufficient sizing and amenities to handle commercial as <br />well as private users. <br />o Safety. <br />o Low cost to build and maintain. <br />o Esthetically pleasing in configuration. <br /> <br />The characteristics which would facilitate the <br />launching or takinq out of watercraft on a, river are the <br />same factors '^,hich contribute to inefficient hydraulics. <br />Ideally, watercraf't are most easily launched in still water, <br /> <br />18 <br />