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<br />o <br /> <br />o <br /> <br />(~ <br /> <br />en Pumped-Storage Hydropower Potential: The Northern Colorado Water Conservancy District <br />I-" <br /> <br />...... investigated an upper reservoir site, located In Trough Valley near the divide between the Colorado <br /> <br />and Blue River, for pumped-storage hydropower potential. It would employ a 9500-foot long <br /> <br />penstock with an elevation difference of 1150 feet, resulting in a distance to elevation-difference <br /> <br /> <br />ratio of 8:1. If the Azure Site was selected for development as a Joint-Use or Replacement <br /> <br />Reservoir, further study of the financial potential of adding this hydropower feature is advisable. <br /> <br />WOLCOTI DAM AND RESERVOIR: The Wolcott Dam Site is located 1 mile north of the town <br />of Wolcott, and 0.7 miles north of the Eagle River on Alkali Creek, a minor tributary of the Eagle <br />River. The reservoir would serve as an off-stream storage site. Two reservoir sizes are considered <br />in this study. High Wolcott would be supplied with water by pumping from both the Eagle River and <br />the Colorado River while Low Wolcott would receive water pumped from the Eagle River only. <br /> <br />The dam and reservoir site is located in a zone of shale bedrock with discontinuities and ',' <br /> <br /> <br />occasional clay seams. Relatively flat external slopes of the dam are required to provide a broad <br /> <br />dam base for overall stability of the dam and foundation. The flat slopes place little demand on the <br /> <br /> <br />strength properties of the construction materials. Therefore, a wide variety of materials can be used <br /> <br /> <br />in the construction of the embankment. <br /> <br />"'." <br /> <br />Eagle Riller Diversion to Wolcott Reservoir: To divert water from the Eagle River into Wolcott <br /> <br /> <br />Reservoir would require a pump station with a diversion dam, intake works, conduit and tunnel. The <br /> <br />diversion dam would be located on the Eagle River, approximately 1500 feet downstream of the <br /> <br />confluence with Alkali Creek. The tunnel would carry water pumped from the river and by reverse <br /> <br />flow, water released from the reservoir. Release flows would pass back through the pump-turbines <br /> <br />to generate electricity. Power revenues could offset about 25 percent of the pumping cost. <br /> <br />Colorado River Diversion to Wolcott Reservoir: To divert water from the Colorado River into <br /> <br /> <br />Wolcott Reservoir would require a pump station with a diversion dam, Intake works, tunnel and <br /> <br />channel Improvements to convey flows from the tunnel outlet to the reservoir. From the intake on <br /> <br />the south bank of the Colorado River downstream from State Bridge, water would be pumped <br /> <br /> <br />through approximately 31,000 feet of tunnel, discharge into Alkali Creek and flow into Wolcott <br /> <br /> <br />Reservoir. Reservoir releases would pass throUgh the Eagle River diversion facilities, <br /> <br />, <br />, <br /> <br />,! <br />, <br /> <br />12 <br />