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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 />able to store the full decreed water rights and the dams will most likely be restricted in the future <br />by the State Engineer, <br /> <br />Alternative #2, "Rehabilitate the dams" would ensure the dams meet State Engineer safety <br />requirements, but reservoir capacity would remain as is and would not allow the owners to store <br />their full water decree, <br /> <br />Alternative #3, "Rehabilitate the dams and dredge out the reservoirs" is the preferred alternative <br />since it provides for full storage of water rights, while meeting safety requirements for the dams <br />and ensures full storage in the future as water is available. <br /> <br />Alternative #3 includes the following work: <br /> <br />1. Repair the upstream face of the dams where erosion has occurred. This will involve <br />placing fill to build up the dam face and flatten the upstream slope to a 2.5 to 1. <br />2, Place riprap bedding and riprap on the upstream slope to prevent future slope erosion due <br />to wave action, <br />3, Remove trees and their roots from the dam embankments and fill the excavated areas, <br />Also remove trees from the spillways where they are restricting flow. <br />4, Remove approximately 105,000 cubic yards of silt from the two reservoirs to recover the <br />original storage, <br /> <br />COST ESTIMATE <br /> <br />The complete breakdown of the cost of the work proposed for Alternatives 2 and 3 are shown in <br />Tables I and 2, The costs are based on our past experience with similar projects and also from <br />data supplied by Zak Dirt, Inc, Quantities were determined using the USGS topographic map of <br />the reservoir site and from measurements we conducted at the reservoir sites. <br /> <br />Giffin Reservoir-Feasibility Study <br /> <br />Page 4 <br />