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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIIAPTER 1 Il\TIWIlVCTlON 1.1 Study PUl""pOSC and Authorization This study is a joint effort between the Douglas County Waler Resources Authority ('"DC\\'RA") Participants. Denver Water. and the Colorado River Water Conservation District "CRWCD" to investigate alternatives for meeting water supply needs of the South Denver Metropolitan Area ('"South Metro Area") through the year 2050. These alternatives include the continued use of Denver Basin ground water, bener management of existing resources. and importation of additional renewable water supplies through the "conjunctive use" of surface water and ground water supplies. Funding of the study was provided primarily through these study participants. with contributions from Douglas County and the Colorado Water Conservation Board. The majority of the funding was provided by the DC\VRA Participants. including the Centennial Water and Sanitation District C"Centennial Water"), the TO\"'lI of Castle Rock ("Castle Rock"), the East Cherry Creek Valley Waler and Sanitation District ("ECCV"). the Arapahoe County Water and Wastewater Authority ('"ACWW A"). the Cottonwood Water and Sanitation District r-Cottonwood"), the Stonegate t-.1etropolitan District ('"Stonegate"). the Denver Southeast Suburban Water and Sanitation District ("Pinery"), the Inverness Water and Sanitation District ("'Inverness"). the Meridian Metropolitan District ("Meridian"), the Roxborough Park Metropolitan District ("Roxborough"), and the Castle Pines North Metropolitan District ('"Castle Pines North"). This study wa.. prepared pursuant to an agreement between the DCWRA Participants, Denver Water and the CRWCD. These parties to the agreement prepared the scope of '....ork for the study. included as Appendix 1. The scope of work was interpreted. redefined and revised by the Study Board during the course of the study, but the intent and purpose of the study remains as presented in the original document. 1.2 Background The Study Area includes the service areas of the public water providers located in the north half of Douglas County from and including the TO\m of Castle Rock. north to the Douglas County/Arapahoe Count)' bound3l)'. excepting a large portion of the TO\\lI of Parker. Also included is much of the urbanized portion of Arapahoe County located east of 1-25. The Study Area is sho\\n on Figure 1.1. The principal development areas include Highlands Ranch. a large planned development located in nonhwestem Douglas County. the To\'.n of Castle Rock. located in central Douglas County, the northern JXJnions of the TO\'on of Parker. located in northeastern Douglas County. and a large JXJrtion of the City of Centennial. in Arapahoe County. Other unincorporated areas include the Roxborough. Castle Pines North and Pinery developments. as well as ponions of the Stonegate. Cottonwood. ACWW A. and the ECCV Districts. The Study Area has a current population of approximately 179.000. It is an area that has developed rapidly o....er the last two decades and is expected to continue rapid growth through the year 2050. Total population in 2050 is estimated at 406.000 people. which is more than double the current population. Page I.)