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. . . c'~ '~"itP P END IX C NAVAJO DAM AND RESERVOIR -- Navajo Dam and Reservoir were authorized as a Storage Unit of Colorado River Storage Project instead of as a participating project or a part of the Navajo Indian Irrigation Project because: (1) New Mexico could not afford to have its cost paid from her share (171) of apportioned power revenues. The apportionment of excess power revenues among the four Upper Division States was based accordingly. (2) Navajo Reservoir was sized (1.7 million acre ft) to pro- vide storage for river regulation and future hyroelectric power generation as well as for depletions of water by the Navajo Indian Irrigation Project. (3) The costs of Navajo Reservoir have been allocated among the other Storage Units between mainstem irrigation and mainstem power costs. With the exception of minor alloca- tions of costs to fish and wildlife, recreation, and muni- cipal and industrial water, the costs of Navajo Reservoir are being repaid by power revenues from the sales of power generated at Glen Canyon, Flaming Gorge, and the Aspinall Storage Unit. I , , r~ ., (4) The benefits of the Navajo Storage Unit, particularly in the form of river regulation, were to accrue to the entire Upper Colorado River Basin. Had this not been the case, the States of Colorado, Utah, and Wyoming would not have agreed to the apportionment formula that reduces their 831 of the excess power revenues in the Basin Fund in order to aid in the repayment of the reimbursable construction and O&M costs of Navajo Dam and Reservoir. Therefore, the Navajo Storage Unit is not eXClusively a New Mexico project, and is not required to be operated as such by the Bureau of Reclamation. i: ~,~ i' ;~ " ~~ ~ ~ " ~~