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<br />I~ <br /> <br />This chapter examines, from a regional perspective, the effects of water reuse by . <br />metro Denver area water providers on future water supply and on existing water <br />rights. This chapter quantifies existing and expected future amounts of reusable <br />water available to metro Denver area water providers, and return flows resulting <br />from those supplies, describes existing reuse activities and future reuse plans in <br />the metro Denver area. <br /> <br />Key points: <br />1. Reuse of non-tributary and imported waters is a major component of. <br />water use in the study area. <br />2. Current reuse is 53,900 acre-feet per year with the potential to approach <br />167,900 acre-feet per year (Table 5-2) <br />3. Without water reuse, there would be additional pressure for <br />development of Denver Basin groundwater, additional transbasin <br />diversions, acquisition and dry-up of irrigated agricultural land and <br />development of South Platte surface storage projects. <br />4. Water reuse implemented in accordance with water court decrees <br />would not injure existing water rights. Water reused under exchanges <br />and augmentation plans is foreign to the natural flow of the South Platte <br />and, therefore, generally unavailable for appropriation under the priority <br />system. <br /> <br />. <br /> <br />ChaDter 6 - A Review of Distribution System Infrastructure in the Denver Metro <br />Area to Identify Ways to Promote Maximum Utilization of Water Resources <br />Available to the South Platte Basin above the Henderson Gage (Technical <br />Addendum No.1, Chapter 5) <br /> <br />This chapter focuses on exploring opportunities for using existing water supply <br />and distribution facilities to enhance and promote the development and use of <br />water resources above the Henderson Gage. <br /> <br />In the southem geographic sub-region, investigations are now underway to define <br />the potential additional yield that could be cooperatively developed using Denver's <br />existing water supply system and some of its Blue River and South Platte water <br />rights in conjunction with water rights, storage, conveyance and delivery facilities <br />currently or potentially available to members of the Douglas County Water <br />Authority. These investigations will focus on the increased yield resulting from new <br />off-stream storage, conjunctive use of surface water and ground water supplies, <br />nontributary aquifer recharge, and borrowing/payback arrangements with Denver. <br /> <br />In the northeast geographic sub-region, preliminary quantitative studies are now <br />underway to define the potential additional yield that could be cooperatively <br />developed using water rights, storage, conveyance and delivery facilities currently . <br />or potentially available to the Northeast Provider Group in conjunction with . <br /> <br />- 8- <br />