AZ vs. CA:21 California Exhibits, Vol. XXI; Nos. 4501-4597

page 2

-2- Bureau of Reclamation, it is impossible to [R-23] determine with finality the amount of water available to the State of Arizona from the Colorado River. The interpretations of all compacts and contracts, as used for a basis of computation in this report, are those of responsible officials of the State of Arizona. The interpretations thus expressed are not necessarily those of the Bureau of Reclamation or of all other states of the Colorado River Basin. "Computations, consistent with interpretations by Arizona, are briefly summarized in the following tabulation: Table 3 Apportionment and Disposition Colorado River Water Division between Upper and Lower Basins and Mexico Acre-feet a year Virgin flow of Colorado River at International Boundary 17,720,000 Apportioned to the Upper Basin by Article III (a) of Colorado River Compact 7,500,000 Apportioned to Lower Basin by Articles III (a) and (b) of Colorado River Compact 8,500,000 Allocated to Mexico by terms of Mexican Treaty 1,500,000 Subtotal 17,500,000 Total surplus to be allocated under the terms of Article III (f) of Colorado River Compact 220,000