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" " , . -, .' ! ~ 90-53" (hereinafter "602(a) StoruC)e"). The qULlntity of 602(a) Stolage shall be determined by the Secret<1ry ilftcr consldera.tion of all applIcable lilWS and relevunt fdetors, Including, but not limIted to, the following: (a) HI storic stream flows; (b) The most critical period of record; (c) Probabilities of wLlter supply; (d) F~stimuted future d8pletions in the upp8r hasin, including the effects of recurrence of clltJcal periods of water supply; (e) The "Report of the Committee on Probabilities and Test Studies to the Task Force on Operating Criteria for the Colorado River," dated October 30, 1969, and such additIonal studies as the Secretory deems necessary; (f) The necessity to ussure that upper bilsin consumptive uses not be Impaired because of f,:lilure to store sufficient water to assure de- liveries under section 602(il) Oland (2) of Public Law 90-537, (2) If, in the plan of operation, either: (a) The Upper Basin Storage Reservoirs ilCtivC storage forecust for September 30 of the current year is less than the quar.lity of 602('1) , Storagc determi ned by the Secretury under Article Ill!) hereof, for thut date; or Ib) The Lake Poweli active storage forecast for that date is less than the Lake Mead active storage forecast for t!lat dute; the objective shall be to maintain a minimum release of watcr from Lake Powell of 8.23 million acre-feet for that year. HowevGr, for the years ending September 30, 1971 and 1972, the release may be greuter than 8.23 million acee-Ieet if nccessury to deliver 7S million ucre-,feet at Lee Ferry for the lO-year period e'nding September 30, 1972., l~) 1L in the plan of op(nation, the Upper Eusin SIorage Reservoirs active storilge forccust for SepIember 30 01 the cllrrcnt water yeelr is greater than' the quanllty of G02(c1) Stora'le determination for thilt da.te" Willer shall be releused annuillly from Lake Powell ilt a rate grhllcr tbeln 8.23 nrilli,)n acre-Ieet per year to the extent necessury to ilccompllsh any or all of the following objectives: (a) To the extent it can be reasonably applil>d in the Stutes of the Lower Division to the uses specified in Article ]1]((') of th2 Coloracio River Compilct, but no such relcases ,shilll b,,> made when the actIve stora'lc in Lake Powe.1! IS less thell1 the ilcti'/e storuge in Luke Mead.