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,. 0) .oo~tn'1 Dean Crawford 2d December 23, 1957 remember these data were furnished at the Upper Colorado River Commission Engineering Committee meeting in Cheyenne on December 19. The assumption of an allowable depletion of 838,000 acre feet per year is conservative in that it makes no allowance for salvage that will occur between sites of use and Lee Ferry as a result of the usage. . Assuming an allowable depletion of 838,000 acre feet per year, present uses and projects for which New ~~xico is seeking early authorization will utilize 71% of New Mexico's share of the waters of the Upper Colorado River System. With the completion of the Animas-LaPlata Project, which will result in a depletion of 33,400 acre feet per year in New Mexico, 75% of New Mexico's development will be accomplished. We have estimated that additional diversion requirements in New Mexico amounting to 224,000 acre feet per year can be served from the San Juan River and its tributaries above Navajo Dam. We con- template that most of this water will be used for municipal and industrial purposes. If such usage is made in the San Juan Basin the consumptive use resulting from a diversion of 224,000 acre feet will amount to about 112,000 acre feet. This additional amount of cons~ptive use would bring New Mexico's depletion to 91% of the assumed allowable. It appears unlikely that this stage of development will be reached before 50 years have passed. It should be pointed out that, under the State's plan of develop- ment, up to 125,000 acre feet per year of the additional 224,000 acre feet available for diversion as noted above may be trans- ported to the Rio Grande Basin. In the event such a diversion is made the return flow to the San Juan Basin would be less than the 112,000 acre feet per year estimated above, but the State's allow- able depletion still would not be exceeded. The foregoing data show that present and authorized uses, and the projects for which New r~xico is seeking early authorization, will deplete only 71"1. of the water allocated to New Mexico, and, there- . fore, it appears clear that there is ample water to meet New Mexico'$ share of the requirements of the Animas-LaPlata Project. New Mexico, people in the project area evidence continuing and active interest . in t.heProject, and the State of New Mexico is anxious, to cooperate with Colorado toward its early, full development. i '.<>-- , ,~ ..uc-,L,':::;;_ ~,.,~'."