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<br />. <br /> <br />. <br /> <br />. <br /> <br />* RANKING OF THE 75 LARGEST 602(A) REQUIRED STORAGE VALUES * <br /> <br /><::> <br />o <br />N <br />00 <br />CJ1 <br />CJ1 <br /> <br />CASE 1-A: CASE 1 WITH POWER POOL CONSIDERED <br /> <br />INFLOW: THE AVERAGE NATURAL RUNOFF AT LEES FERRY, FOR THE SPECIFIC PERIOD (SEE TABLE) <br />DEPLETIONS: EITHER 5,8 MAF OR THE USBR PROJECTED DEPLETIONS AVERAGED FROM 1985 TO THE END DF THE SPECIFIC PERIOD (SEE TABLE) <br />ALLOWABLE DEPLETION SHORTAGE = 6.12 PERCENT MINIMUM ANNUAL RELEASE FROM LAKE POWELL = 8.23 MAF <br />INITIAL SEDIMENT ACCUMULATION (1985) . 1.342 MAF BANK STORAGE COEFFICIENT = .00 <br />ANNUAL SEDIMENT LOAD = 61000,0 ACRE-FEET A MINIMUM POWER POOL OF 5,179 MAF IS MAINTAINED IN THE UPPER BASIN RESERVOIRS <br />~.Z.SM1tF <0',0000'- <br />REQUIRED STORAGE = (AVERAGE DEPLETIDN - AVERAGE INFLOW + MINIMUM RELEASE + ANNUAL SEDIMENT LDAD) X LENGTH DF PERIDD <br />+ INITIAL SEDIMENT ACCUMULATION + VOLUME NEEDED TO MAINTAIN MINIMUM POWER POOL <br />REQUIRED STORAGE IS COMPUTED FOR ALL HISTORICAL SEQUENTIAL RUNOFF PERIODS OF ALL LENGTHS (1906-1983 HYDROLOGIC RECORD) <br /> <br />. <br /> <br /> I <br /> LENGTH OF AVERAGE AVERAGE REQUIRED PROBABILITY <br /> PERIOD BEGINNING INFLOW DEPLETION STORAGE (PLOTTING <br />RANKING (YEARS) OF PERIOD (MAF) (MAF) (MAF) POSIT ION) <br />------- --------- --------- - ------ --------- -------- ----------- <br />1 12 1953 12.18 5,80 23,06 99.97 <br />2 25 1953 12,97 5,80 22,77 99.94 <br />3 16 1953 12,63 5,80 21.96 99.90 <br />4 26 1953 13,04 5,SO 21.80 99.87 <br />5 15 1953 12.57 5.80 21.79 99,84 <br />6 29 1953 13,12 5.80 21.23 99.81 <br />7 17 1953 12.76 5.80 20.78 99.77 <br />8 11 1954 12,27 5.80 20.59 99.74 <br />9 24 1954 13.04 5.80 20.30 99.71 <br />10 11 1953 12.31 5,80 20.19 99.68 <br />11 14 1953 12,62 5.80 19.92 99,64 <br />12 9 1953 12.04 5.80 19.87 99,61 <br />13 15 1954 12.72 5.80 19.49 99,58 <br />14 25 1954 13.11 5.80 19.33 99.55 <br />15 14 1954 12.66 5.80 19.32 99.51 <br />16 18 1953 12.90 5.80 19.11 99.48 . <br />17 4 1953 10.22 5.80 19.01 99,45 <br />18 20 1953 12.99 5.80 18.95 99.42 <br />19 6 1959 11.38 5.80 18,94 99,38 <br />20 30 1953 13.22 5.80 18.80 99.35 <br />21 28 1954 13.19 5.80 18.76 99.32 <br />22 19 1959 12.97 5.80 18.65 99.29 <br />23 16 1954 12.85 5.80 18.31 99.25 <br />24 27 1953 13,19 5.80 18.18 99.22 <br />25 13 1953 12.70 5.80 17 .87 99.19 <br />26 10 1959 12,41 5.80 17.84 99.16 <br />27 10 1954 12.42 5.80 17.72 99.12 <br />28 20 1959 13.05 5.80 17.6B 99.09 <br />29 9 1959 12.29 5.80 17.67 99.06 <br />30 19 1953 13.02 5.80 17.58 99.03 <br />31 13 1954 12.73 5.80 17.45 98.99 <br />32 8 1954 12.15 5.80 17_40 98.96 <br />33 15 1950 12.86 5.80 17.38 98.93 <br />34 23 1959 13,16 5,80 17 _ 11 98.90 <br />35 28 1950 13,25 5.80 17.09 98.86 <br />36 10 1931 12,49 5.80 17.05 98,83 <br />37 14 1951 12.83 5.80 17,03 98,80 <br />38 3 1953 9.79 5,80 16,84 98.77 <br />39 2 1976 7.86 5.80 16,80 98.73 <br />40 27 1951 13,25 5.80 16.74 98,70 <br />