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I I I I I I I I I I I I I I I I I I I Cherry Creek that encompasses approximately 20 square miles upstream of the proposed dam axis. Based on data generated from the preliminary dam design, this reservoir site can accommodate an approximate 14, 300 acre-foot (ac-ft) reservoir that will be used to meet the needs of the District. The District has currently purchased 2240 acres which includes the dam axis, the reservoir area, spillway area, and land for ancillary facilities. There are several ancillary facilities that will also be completed on the reservoir site and between the reservoir site and Cherry Creek to divert Cherry Creek flows into Rueter- Hess Reservoir. Since Rueter-Hess Reservoir will store raw water, a water treatment plant is planned near the northeast corner of the reservoir site. This water treatment plant will process raw water from the reservoir, and then deliver these potable supplies into the District's distribution system. Water will be delivered to Rueter-Hess Reservoir from Cherry Creek by a surface-water and ground water diversion system. The alluvial wells, diversion structures, pumps and pipelines are described below as the points of diversion for the water rights adjudicated on Cherry Creek. Hydrology, Water Rights and Alternative Projects In 1985, John C. Halepaska and Associates, Inc. (JCHA), as the hydrologic consultant to the District, prepared a report which showed that the District would face a 3,000 ac-ft shortfall at ultimate development based on the then-current District master plan, and the District's then adjudicated water rights. That report set in motion a series of studies which has resulted in the development of Rueter-Hess Reservoir. To evaluate how the District could overcome its water supply shortfall, JCHA did a subsequent study on various water supply alternatives. One of these alternatives was to build an upstream storage vessel on Cherry Creek that would capture in-priority Cherry Creek flows. This study identified three potential reservoir sites that could provide an average annual yield between 2,100 and 2,800 ac-fUyr. Once the District identified these three potential upstream reservoir sites, the District filed for water storage rights in Division 1 Water Court in Case No. 85CW448. This case sought the right to store water in any of the sites identified in the JCHA 1985 study. Given the potential yields from upstream reservoirs on Cherry Creek, the district pursued additional studies of these reservoir sites through the Colorado Water Resources and Power Development Authority (Authority). This project was funded by the Authority, and Morrison Knudsen Engineers conducted studies related to the economical and technical viability of upstream reservoirs on Cherry Creek, as well as other imported water supply options. This study was completed in 1987, and the site of Parker Water & Sanitation District Rueter-Hess Reservoir Feasibiiity Study August 2001 Page 7 of 13 J