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<br />E. Non-Flood Flow <br /> Conditions <br /> 1. Upstream from <br /> new Diversion <br /> 2. New Diversion <br /> to Platte <br /> Canyon <br /> Diversion <br /> 3. Platte Canyon <br /> Diversion to <br /> Canyon Mouth <br />F. Water Supply <br /> Operational Factors <br /> 1. Proj ect Delay - <br /> Years <br /> 2. Sediment <br /> Sluicing <br /> <br />Strontia Springs <br /> <br />COMPARISON OF ALTERNATIVES (CONT'D) <br /> <br />Upstream <br />Dam <br /> <br />Chatfield <br /> <br />Joint Use <br />of Rampart <br />Tunnel <br /> <br />Harding Plan <br /> <br />b <br />6 <br />c.::.;,; <br />{_"'=-t,... <br />~ <br /> <br />Mouth of Canyon <br /> <br />-----------------------------________________Some increase over past 8-year average.----------------_________~-----------__----- <br /> <br />Some reduction at <br />times in 3.3 mile <br />reach. <br /> <br />No change from <br />present unless <br />minimum release <br />criteria adopted. <br /> <br />o <br /> <br />None required for <br />a considerable <br />period due to <br />laO-year storage. <br />Sluicing operation <br />eliminated at <br />existing Aurora <br />intake and greatly <br />reduced at Platte <br />Canyon and <br />Highline Canal <br />Diversions <br /> <br />Some reduction at <br />times in 5.2 mile <br />reach. <br /> <br />No change from <br />present unless <br />minimum release <br />criteria adopted. <br /> <br />1-2 <br /> <br />Sluicing would be <br />required to remove <br />sediment. Present <br />operations continue <br />at Platte Canyon <br />and Highline <br />Diversions. <br /> <br />Not applicable. <br /> <br />Some increase. <br /> <br />2-3 <br /> <br />None required at <br />Chatfield, but <br />present operations <br />continue at <br />Aurora, Platte <br />Canyon. and <br />Highl ine <br />Diversions. <br /> <br />Some reduction at <br />times in 5.2 mile <br />reach. <br /> <br />No change from <br />present unless <br />minimum release <br />criteria adopted. <br /> <br />1-2 <br /> <br />Sluicing would be <br />required to remove <br />sediment. Present <br />operations continue <br />at Platte Canyon <br />and Highline <br />Diversions. <br /> <br />Not applicable. <br /> <br />No change from <br />present unless <br />minimum release <br />criteria adopted. <br /> <br />1-2 <br /> <br />Present sluicing <br />operations <br />continue at all <br />diversions. <br /> <br />Not applicable. <br /> <br />No change from <br />dam to canyon <br />mouth unless <br />minimum release <br />criteria adopted. <br /> <br />1-2 <br /> <br />None required for <br />a considerable <br />period due to <br />IOO-year storage. <br />Sluicing operations <br />eliminated at <br />Platte Canyon and <br />Highline Diversions <br />but continued at <br />Aurora Diversion. <br /> <br />PLATE 7B <br />