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.~ <br />wells will be out of priority, applicant proposes to use said wells <br />as alternate points of diversion for part of its Vulcan Ditch <br />rights, while continuing to divert through Vulcan Ditch for irriga- <br />tion purposes, to the extent permitted. As long as the total <br />amount of water diverted through wells 'and ditch does not exceed <br />the amount of water decreed to Vulcan Ditch, and as long as the <br />combined depletion to the river system from the Riverbend wells <br />and Vulcan Ditch is not greater than the historic depletion from <br />Vulcan Ditch, no vested rights will be injured by applicant's <br />change of point of diversion of part or all of the Vulcan Ditch <br />rights. <br />5. The total consumptive use of the Vulcan Ditch rights <br />has been approximately 440 acre feet per year in dry years. Since <br />the precise allocation of water among the several uses to which <br />applicant proposes to put its rights in connection with its project <br />is not fixed, the amount of the annual depletions to the Colorado <br />River and Canyon Creek caused by water use in applicant's develop- <br />ment cannot presently be ascertained. However, the 440 acre feet <br />consumed historically is available for consumption in applicant's <br />development without injuriously affecting other water rights. The ' <br />amount of consumptive use associated with each aspect of applicant's <br />development has been calculated as follows. For residences, all <br />of which will be connected to a central water and sewer system, <br />household consumptive use, not including yard irrigation, will be <br />3% of the water supplied thereto. Although there may be certain <br />other forms of consumers on the central water system than single- <br />family domestic dwelling units, such as multi-family or light <br />commercial, the totalconsumptive use can adequately be expressed as <br />a function of "residential equivalent units." Each residential <br />equivalent unit will require the diversion for in-house purposes <br />of o.392o acre-feet per ,year, based upon a per capita demand of 100 <br />gallons per day, and an occupancy of 3.5 persons per dwelling unit. <br />At 3% consumptive use, this results in an annual consumptive use <br />of 0.0118 acre-feet per residential equivalent unit. Applicant's <br />-3- <br />