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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Maximum water surface area would be about 19.5 acres. The proposed lake <br />bottom would be at elevation 5587 feet with the high water line at elevation 5605 <br />and top of embankment at elevation 5610, providing 5 feet of freeboard. Since <br />this alternate does not involve raising an embankment but only excavation of a <br />pit, it can be precluded from review by the State Engineer's office. <br />Since the normal high water line is at a lower elevation than the flow line <br />of the Louisville Lateral ditch, all storage to be transferred out of Alternate <br />III would require pumping. A site plan and details are shown on Figure 8. <br />6. Harper Lake-Alternate IV (combined Alternate I and III) - Combining <br />Alternate I and Alternate III would provide a two reservoir configuration with <br />approximately 984 acre-feet of water storage with an average depth of 18 feet as <br />shown on Figure 9. Maximum water surface area would be about 61 acres. <br />The crest elevation at site I would be 5615 feet with a normal high water <br />line at elevation 5610 feet and bottom at an elevation of 5592 feet. The crest <br />elevation at site III would be 5610 feet with normal high water line at elevation <br />5605 feet and bottom at elevation 5587 feet. This configuration would be subject <br />to review and approval from the office of the State Engineer prior to construction. <br />.. Approximately 82 acre-feet coulo be transferred by gravity flow through the <br />Louisville-Harper Lateral into Louisville Reservoir with the remaining 902 acre- <br />feet requiring pumping for the total utilization of storage. <br />7. Eldorado Springs Alternate - This alternative considers construction <br />of a concrete gravity darn on South Boulder Creek approximately 0.4 miles west <br />of Eldorado Springs, Colorado. The oam would be approximately 158 feet high <br />and the reservoir would have a capacity of 800 acre-feet with the normal high <br />water line at an elevation of 6075 feet. The total cost of the dam and reservoir <br />assuming a completion date of January 1984 would be approximately $7,233,500 <br /> <br />40 <br />