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8.6 LAKE GRANBY PAIRED WITH SULPHUR GULCH RESERVOIR (Alternative C9) <br />This alternative pairs releases from existing Lake Granby with new construction of Sulphur Gulch <br />Reservoir. This alternative meets both the primary and secondary objectives of the 10825 <br />Water Supply Study. Lake Granby releases of 2,700 acre feet would occur in the late summer of <br />each year. The remaining 8,125 acre feet of Recovery Program water would be released from <br />Sulphur Gulch Reservoir. The Sulphur Gulch releases will efficiently provide water to the 15 Mile <br />Reach, and may be varied to provide maximum benefit to the 15 Mile Reach. <br />Releases of 2,700 acre feet from Lake Granby would significantly improve the aquatic resources <br />of the Upper Colorado River in the segment from Lake Granby down to below Hot Sulphur <br />Springs. The potential for negative aquatic impacts to the Fryingpan and Roaring Fork rivers are <br />completely avoided in this alternative as no additional water for the Recovery Program is <br />released from Ruedi Reservoir. <br />The viability of Lake Granby as a source of 10825 Water is not known at this time. The <br />institutional and legal issues associated with this facility are currently being explored by the Lake <br />Granby stakeholders. <br />1082,5 Wtiter St €p y Stay Phase 2 Alternatives Assessment ,Iamairy 2008 Draft 20 <br />