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<br />C. Stream Sedimentation <br /> <br />1. Reservoir <br />Storage Effect <br /> <br />2. Streambed <br />Materials <br /> <br />3. Suspended Load <br /> <br />D. Water Quality <br /> <br />1. Turbidity <br /> <br />2. Temperature <br /> <br />3. Dissolved <br />Oxygen <br /> <br />Strontia Springs <br /> <br />tlOO~year storage <br />for bed material <br />load. <br /> <br />Below dam, inter- <br />mittent sand- <br />gravel bars will <br />disappear. <br />Boulder and <br />cobble beds <br />remain. <br /> <br />Below dam, major <br />reduction in sand <br />and some reduction <br />in silt and clay. <br /> <br />Some reduction <br />in present low <br />turbidities <br /> <br />Multi-level <br />intake will meet <br />downstream <br />requirements. <br /> <br />Multi-level <br />intake and <br />aeration by <br />outlet valves can <br />meet downstream <br />requirements. <br /> <br />COMPARISON OF ALTERNATIVES (CONT'D) <br /> <br />Upstream <br />Dam <br /> <br />t2-year storage, <br />then bed material <br />load would be <br />sluiced past. <br /> <br />Little change, <br />intermittent <br />sand-gravel bars <br />remain. <br /> <br />Little reduction <br />in present loads. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />Chatfield <br /> <br />Joint Use <br />of Rampart <br />Tunnel <br /> <br />No change. <br /> <br />t2-year storage. <br />then bed material <br />load would be <br />sluiced past. <br /> <br />No change. <br /> <br />Little change, <br />intermittent <br />sand-gravel bars <br />remain. <br /> <br />No change. <br /> <br />Little reduction <br />in present loads. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />Harding Plan <br /> <br />t2-year storage, <br />then bed material <br />load would be <br />sluiced past. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />No change. <br /> <br />c:: <br />c <br />0'" <br />~ <br />W <br /> <br />Mouth of Canyon <br /> <br />tlOO-year storage <br />for bed material <br />load. <br /> <br />No change above <br />pool. Below dam, <br />sand-gravel bars <br />will disappear. <br /> <br />Same as existing <br />condi tion above <br />pool and major <br />reduction <br />downstream from <br />dam. <br /> <br />Some reduction <br />in present low <br />turbidities <br /> <br />Multi-level <br />intake will meet <br />downstream <br />requirements. <br /> <br />Multi-level <br />intake and <br />aeration by <br />outlet valves can <br />meet downstream <br />requirements. <br /> <br />PLATE 7A <br />