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B. Blue River Pumpback from below Silverthorne <br />Another potential project to provide replacement water for Summit County users <br />would be to pumpback flows from below Silverthorne to the outlet of Dillon Reservoir <br />(essentially the head of the RICD), allowing less water to be released from Dillon <br />Reservoir. A portion of the water so saved could then be used in an augmentation plan <br />for Summit County users above Dillon Reservoir. I do not believe that this pumpback <br />would impact the RICD, however, I believe that the RICD should contain terms to clarify <br />that Silverthorne would not oppose the Pumpback based upon the operations of the <br />RICD. <br />C. Use of the Upper Blue Water pursuant to the Colorado Springs <br />Substitution Agreement <br />The River District has secured 250 acre feet of firm annual yield from Colorado <br />Springs' Upper Blue Reservoir. The repayment for this supply is by release from <br />Wolford Mountain Reservoir, during below normal years, when there is insufficient <br />water available to complete a fill of Green Mountain Reservoir from the tributaries to the <br />Blue River below Dillon Reservoir. Colorado Springs Utilities and the River District are <br />working with the U.S. Bureau of Reclamation to complete NEPA compliance to a11ow a <br />permanent Substitution Agreement to be completed. I believe that protective terms and <br />conditions should be included so that Silverthorne does not oppose the Substitution <br />Agreement or the use and reuse of the Upper Blue water based upon the operation of the <br />RICD. <br />III. CONCLUSION <br />As currently requested, the Recreational In Channel Diversion filed for by the <br />Town of Silverthorne has the potential to adversely impact probable future exchanges <br />and diversions to storage necessary to provide water for present and identifiable future <br />users in Summit County. I believe that, absent terms and conditions to protect these <br />projects and water sources as discussed above, the RICD would potentially interfere with <br />the maximum utilization or the waters of the State.