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<br />. <br /> <br />the water use <br />building of the <br /> <br />germane to the <br />Una Reservoir). <br /> <br />reservoir's <br /> <br />operation <br /> <br />(e.g., <br /> <br />In determining future upstream depletions and downstream <br />demands, the WWE study differs from Una's approach in that it <br />uses a straight percentage of past depletions and demands <br />instead of establishing an array of specific individual senior <br />water rights and planned water resource projects with their <br />likelihood of being perfected and coming to fruition, <br />respectively. <br /> <br />The assumptions used in this analysis are detailed in the <br />following subsections, and the implications are summarized in <br />Table II-I. <br /> <br />. <br /> <br />a. Future Upstream Depletions <br />For the three scenarios, upstream depletions are considered <br />to be consumptive uses and include agricultural uses, <br />municipal and industrial uses, reservoir evaporation, and <br />transmountain diversions. <br /> <br />Agricultural depletions for the last 40 years decreased <br />slightly. It was assumed for Scenario I that they would <br />not chanqe significantly from the present consumptive use. <br />In the computer model, agricultural depletions were <br />increased 10% and 20% for Scenarios II and III, <br />respectively. <br /> <br />. <br /> <br />Municipal and industrial depletions were predicted to <br />increase 6% for Scenario I, 10% for Scenario II, and 30% <br />for Scenario I II. The most important industry upstream <br />from Webster Hill Reservoir is tourism, including the ski <br />industry in the winter. Although, the region's historical <br />demography has involved an expotential rise in population, <br />it is expected that this trend will decelerate in the <br />future. <br /> <br />3686-a/6 <br /> <br />II-7 <br />