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<br />. <br /> <br />Another variable in the calculation of sediment deposition is <br />that of the density of the deposited sediments. The Lava and <br />Pemberton (1965) technique was employed in this analysis to <br />estimate the initial unit weight of deposited sediments. In <br />addition, to account for the effects of consolidation over time, <br />the approximation described by Miller (1953) was followed. <br /> <br />Table I-I indicates the results of the density calculations. <br />The USSR Rulison Bridge data indicated the average suspended <br />load consists of 30.1% sands, 50.5% silts, and 19.4% clays. <br />Adjusting for the additional 15% bedload results in 39.2% <br />bedload and sands, 43.9% silts and 16.9% clays. <br /> <br />TABLE 1-1 <br />DENSITY OF DEPOSITED SEDIMENTS <br /> <br />. <br /> <br />Time <br />(Years) <br /> <br />Average Density <br />(lb/cu ft) <br /> <br />o <br />5 <br />10 <br />15 <br />20 <br />30 <br />40 <br />50 <br />75 <br />100 <br /> <br />73.1 <br />75.3 <br />76.5 <br />77 .3 <br />77 .9 <br />78.7 <br />79.3 <br />79.8 <br />80.6 <br />81.3 <br /> <br />. <br /> <br />Application of the Brune trap efficiency curve to the above data <br />results in the schedule of estimated storage loss predicted in <br />Table 1-2. Trap efficiencies range from a high of 43% upon <br />reservoir completion to a theoretical 2% after 100 years. More <br />detailed model ing analyses to be conducted in the next phase of <br />work may indicate that the trap efficiencies predicted by the <br /> <br />3686-a/5 <br /> <br />1-14 <br />