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oLuUU , Glen Canyon but is only the period required to accumulate 17,000,000 acre feet total storage in Glen Canyon which is the full power head at Glen Canyon. From there on out the operation becomes something else. In order to do that, certain assumed cri- teria had to be established both for the operation of Glen Canyon and for the opera- tion at Hoover Dam. The criteria that was used for Glen Canyon was first to meet Article III (d) of the Colorado River Com- pact which we assumed to be the release of 75,000,000 acre feet over any consecutive ten year period. Then we would produce power at Glen Canyon to meet the amortization require- ment contained in the financial and economic analysis published by the Bureau of Reclama- tion in 1958. In that analysis, if you will remember, they indicated the total power that must be produced by the Upper Colorado River Storage Project. The amount of power that had to be produced by Glen Canyon then was arrived at by a ratio of the power at Glen Canyon to the other power units within the project and from that we came out with an annual requirement for pOWer to be produced at Glen Canyon to meet the amortization schedule established for it in that document. Then we assumed that after the storage at Glen Canyon reaches 7.2 million acre feet which is the dead storage, that no. releases below 7.2 million acre feet would be made under any cir- cumstances after it had reached that point. Of course, after that's closed, why then it would not be possible to make releases below that. After storage at Glen Canyon reaches 17 million acre feet, we assumed that we would not draw below 17 million except to meet Article III (d) of the Compact, whatever that might be for any particular year. These were conducted under one hydro- logic cycle, 1922-l957, then we equated within that cycle 1922-1962 as a period when the flows were good initially; 1930- 1962 was a period when the initial flows I 1