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oonH2 -23- River Compact upon the States of the Upper Division, it follows that the said initial list of Upper Basin projects can be authorized and construct- ed without danger of violating the said delivery obligation, and without requiring the construction of any of the potential main-stem pov.er, regula- tion or replacement reservoirs listed in the Report. Colorado sugGests that the Report be amended to include the analyses and conunents above out- lined. In connection with said initial list of projeots, it should be noted that Colorado has approved the plans of the Little Snake Project only to that first stage of its development which is presently needed, and can- not now approve the plan for full or ultimate development; and Colorado suggests that the potential San Juan-Chame. diversion project be excluded from said initial list of projects and not be considered until such time as investigations p~rmit selections to be me.de by New Mexico; and that an agreement with Colorado will be necessary at that time. ~, . 41. Total depletions of all potential Upper Basin irrigation projects listed in the Report are estimated t herein at 1.851,000 aore feet annually. Independent estimates by Colorado engineers arrive at substantially the same total for the entire Upper Basin, but disclose rather wide discrep- ancies when the estimated depletions are segregated by Sta.tes, as indicat- ed in the following table. New Lands Arizona Colorado NeVI Nexico Utah 1:yoming 18,680 471,300 149 .960 168 ,780 291,330 Upper Basin Totals 1,100,050 I Estim~ted Deplet~ons_.~ Potential Upper Basin_ Irrigation Projects Listed in Report Acres Benefited Es~~-p~pl_e.!'.?-~ Ac re Feet U.S.a.R. C.H.C.B. Supp le- mental Total 6,000 192,700 15,100 161,160 95,360 470,320 24,680 664,000 165,060 329,940 386.690 39,000 788,000 291,000 319,000 422,000 39,000 918 ,000 300 ,000 288,000 298,000 1,570,370 1,851,000 1,059,000 Unit rates e.-nployed bj- tho Bureau of Rae le.matioll in estimating the depletions of puoential projects are not disclosed in the Report. Es- timates of Colorado engineers are based on rates believed to be ap~lica- ble under the natural conditions prevailing in the Upper Basin and the States thereof. Colorado suggests that details of depletion calculations should appear in the Report; and says that the above depleticns do not fully reflect all the opportunities and possibilities for future develop- ment in Colorado, and probably in other States of the Upper ~vision, that are to be anticipated in the next several decades. In addition to exist- ing depletions of lands irrigate d in the Upper Basin. to the allowances for future depletions by projects now authorized or under construction, .