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<br />* RANKING OF THE 75 LARGEST 602(A) REQUIRED STORAGE VALUES *
<br />
<br />CASE 2-A: CASE 2 WITH POWER POOL CONSIDERED
<br />
<br />INFLOW: THE AVERAGE NATURAL RUNOFF AT LEES FERRY, FOR THE SPECIFIC PERIOD (SEE TABLE)
<br />DEPLETIONS: EITHER 5.B MAF OR THE USBR PROJECTED DEPLETIONS AVERAGED FROM 19B5 TO THE END OF THE SPECIFIC PERIOD (SEE TABLE)
<br />ALLOWABLE DEPLETION SHORTAGE = .00 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 />
<br />REQUIRED STORAGE = (AVERAGE DEPLETION - AVERAGE INFLOW + MINIMUM RELEASE + ANNUAL SEDIMENT LOAD) X LENGTH OF PERIOD
<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 />RANKING
<br />
<br />1
<br />2
<br />3
<br />4
<br />5
<br />6
<br />7
<br />8
<br />9
<br />10
<br />11
<br />12
<br />13
<br />14
<br />15
<br />16
<br />17
<br />18
<br />19
<br />20
<br />21
<br />22
<br />23
<br />24
<br />25
<br />26
<br />27
<br />28
<br />29
<br />30
<br />31
<br />32
<br />33
<br />34
<br />35
<br />36
<br />37
<br />38
<br />39
<br />40
<br />
<br />LENGTH OF
<br />PERIOD
<br />(YEARS)
<br />
<br />2
<br />4
<br />3
<br />1
<br />3
<br />3
<br />2
<br />3
<br />6
<br />2
<br />3
<br />1
<br />2
<br />2
<br />3
<br />12
<br />2
<br />1
<br />2
<br />9
<br />5
<br />4
<br />4
<br />5
<br />1
<br />1
<br />4
<br />2
<br />3
<br />2
<br />2
<br />11
<br />2
<br />1
<br />1
<br />1
<br />1
<br />11
<br />8
<br />4
<br />
<br />AVERAGE
<br />BEGINNING INFLOW
<br />OF PERIOD (MAF)
<br />
<br />1976
<br />1953
<br />1953
<br />1977
<br />1954
<br />1976
<br />1954
<br />1959
<br />1959
<br />1933
<br />1933
<br />1934
<br />1934
<br />1953
<br />1975
<br />1953
<br />1977
<br />1981
<br />1963
<br />1953
<br />1931
<br />1931
<br />1974
<br />1959
<br />1954
<br />1931
<br />1933
<br />1939
<br />1934
<br />1959
<br />1960
<br />1954
<br />1955
<br />1959
<br />1961
<br />1963
<br />1940
<br />1953
<br />1954
<br />1975
<br />
<br />7,86
<br />10.22
<br />9.79
<br />5.02
<br />9.89
<br />10.12
<br />9.08
<br />10,15
<br />11.38
<br />9.38
<br />10.35
<br />6.63
<br />9.45
<br />9.79
<br />10.62
<br />12.18
<br />9.83
<br />7.41
<br />10,03
<br />12.04
<br />11.44
<br />11,23
<br />11,29
<br />11.50
<br />8,37
<br />8.63
<br />11.38
<br />10.55
<br />11.13
<br />10.60
<br />10.61
<br />12.27
<br />10,65
<br />9.23
<br />9,25
<br />9.26
<br />9,38
<br />12.31
<br />12.15
<br />11,63
<br />
<br />AVERAGE
<br />DEPLETION
<br />(MAF)
<br />
<br />4,02
<br />4.04
<br />4.03
<br />4.02
<br />4.03
<br />4.03
<br />4.02
<br />4.03
<br />4.13
<br />4.02
<br />4.03
<br />4.02
<br />4.02
<br />4.02
<br />4.03
<br />4.36
<br />4.02
<br />4.02
<br />4.02
<br />4.28
<br />4.04
<br />4,04
<br />4.04
<br />4.04
<br />4,02
<br />4.02
<br />4,04
<br />4.02
<br />4,03
<br />4.02
<br />4.02
<br />4,34
<br />4,02
<br />4.02
<br />4.02
<br />4,02
<br />4.02
<br />4,34
<br />4,24
<br />4,04
<br />
<br />REQUIRED
<br />STORAGE
<br />(MAF)
<br />
<br />13.96
<br />13.38
<br />12,59
<br />12.41
<br />12,29
<br />11.59
<br />11.52
<br />11.50
<br />11.05
<br />10,93
<br />10.92
<br />10.80
<br />10.78
<br />10_11
<br />10_ 10
<br />10.06
<br />10.03
<br />10.01
<br />9.63
<br />9,37
<br />9,33
<br />9,31
<br />9.10
<br />9,06
<br />9,06
<br />8.79
<br />8_72
<br />8,59
<br />8.57
<br />8.48
<br />8.46
<br />8,41
<br />8.39
<br />8_ 19
<br />8.18
<br />8,17
<br />8.05
<br />8,01
<br />7,76
<br />7.75
<br />
<br />.
<br />
<br />PROBABILITY
<br />(PLOTTING
<br />POSITION)
<br />
<br />99.97
<br />99.94
<br />99.90
<br />99.87
<br />99.84
<br />99.81
<br />99,77
<br />99,74
<br />99.71
<br />99.68
<br />99.64
<br />99,61
<br />99.58
<br />99.55
<br />99,51
<br />99.48
<br />99.45
<br />99,42
<br />99.38
<br />99,35
<br />99.32
<br />99.29
<br />99.25
<br />99.22
<br />99.19
<br />99.16
<br />99.12
<br />99,09
<br />99.06
<br />99.03
<br />98.99
<br />98,96
<br />98.93
<br />98.90
<br />98.86
<br />98,83
<br />98.80
<br />98.77
<br />98,73
<br />98.70
<br />
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