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<br />reservoirs in the Piedra River basin to provide for regulation of deliver_
<br />ies through the tunnel and for replaoement storage} the Ss:n Juan-South Fork
<br />diversion (53,000 aore feet, not mentioned in the Report); and the Animas_
<br />Rio Grande diversion (I~O,OOO aore feet), whioh is listed (page 120) among
<br />the alternative projects, and exoluded from the summaries'with the state-
<br />ment that "there is insufficient water for this projeot and also for the
<br />full Animas-La P1I!LtI!L proj ect as outlined, or for the Animas River power
<br />development." With respect to the oonflict between plans for diverting
<br />Animas River surplus water for irrigation use either in the San LIo.i's Valley
<br />or the La Plata River Valley, Colorado says that deoision cannot be made
<br />by the looal interests, the State of Colorado, or the Burel!Lu of Reol&ma-
<br />tion, prior to the oompletion of individual investigations and reports on
<br />the fel!Lsibility and economio justifioation of both projeots. The Report
<br />is not olel!Lr as to the period upon whioh the exportl!Ltions above mentioned
<br />are oaloulated, ",hether the drouth oyole of 1931-1940, or long-time aver-
<br />ages. From the delloripti on on the same page of, the San Juan-Ch8ma diVer-
<br />sion for New Mexioo it appears thl!Lt drouth-oyole averages are given. With
<br />respect to that project, the statement is made that: "In exohange for the
<br />water thus; brought into New Mexioo, I!L like amount would be diverted i'rom
<br />the river and its tributar1ea in Colorado and used for irrigation in the
<br />San Luis Valley." Colorado suggests that in lieu of said statement, the
<br />Report should indioate that "I!Ln I!Lgreement will be required between Colo_
<br />rado, New Mexioo and Texae, involving ,possible revisions of the Rio Grande
<br />Compaot, in order to determine the benefits to aoorue to the San Luis
<br />Valley in Colorado by reason of the diversion of water from the San Juan
<br />River and its; tributuiea in ColoradO for use in the Rio Grande basin in
<br />New Mexioo."
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<br />46. The desoription (at page 94) of the Blue River-South Platte di-
<br />version is not adequate or aoourate. It should indioate a potential yield
<br />estimated at 701,000 aore feet, for, the oanbined yield of the projeots
<br />proposed by the City of Denver and the Bureau of Reol smsti on; and that
<br />the projeot is an enlargement and extension of the Blue River portion of
<br />the trans_mountain diversion systems heretofore initiated by the City and
<br />County of Denver. The said ,Denver system may be desoribsd in three parts I
<br />(1) the Moffat and Jones Pass tunnels whioh are oonstructsd, and through
<br />whioh diversions averaging 51,400 aore feet are now being lIIade; (2) the
<br />storage f'eservbiron-WHliams River, now oonstruoted and the oolleotion
<br />llystems on Fraser and Williams whioh are partially oonstruoted and are
<br />being extended as needed, which will have the effeot of inoreasing the
<br />- diversions; fra!! said streams and for whioh inoresse an allowanoe of 100,000
<br />aore feet is made in the Report; and (3) potential diversions from, the
<br />Blue River. The ultimate use by the City of Denver of water that may be
<br />exported fram the Fraser, Williams and Blue Rivera is estimated at 3?O,OOO
<br />aore feet annually. The Blue River-South Platte projeot proposed by the
<br />Bureau of Reclamation contemplates diversions from the Eagle, Piney, Blue'
<br />and Williams Rivers s:nd their tributaries. Its potentil!Ll diversions, in
<br />addition to the allowanoe of 100,000 acre feet for Denver's near-future
<br />expansion, will average 550,000 acre feet annually. Suoh additional dee-
<br />oription of the Blue River-South Platte projeot as may be embodied in the
<br />Report should be obtained from the reg~onaldireotor at Denver, whioh of- ,
<br />fioe is' conduoting the investigations and preparing the report on the projeot.
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