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<br />
<br />Table 10.- Probability of recurrence of annual flows, 1945-64.
<br />
<br /> Annual Recurrence Annual Recurrence
<br />Year di scharge, Rank interval Year discharge, Rank interval
<br /> U.S. share T=(n+l)/m U.S. share T=(n+l)/m
<br /> (1000 ac- ft ) (m) (years) (1000 ac-n) (m) (years)
<br />1 2 3 4 1 2 3 4
<br />1945 1,183 9 2.33 1955 1,310 11 1. 91
<br />46 1,451 13 1. 62 56 478 2 10.50
<br />47 1,139 8 2.62 57 2,000 17 1. 24
<br />48 1,776 16 1.31 58 2,030 18 1.17
<br />49 2,225 19 1.11 59 1,460 14 1. 50
<br />50 1,087 7 3.00 60 1,200 10 2.10
<br />51 838 6 3.50 61 1,330 12 1. 75
<br />52 444 1 21. 00 62 825 5 4.20
<br />53 596 3 7.00 63 680 4 5.25
<br />54 3,326 20 1.05 64 1,750 15 1.40
<br /> Ave. 1,356 - -
<br />
<br />Table 11.- Chance of occurrence of selected discharges.
<br />
<br />Recurrence Annual flow in acre-feet *Chance of occurring
<br />interval in anyone year
<br />(years) 1900-1964 1945-1964 (percent)
<br />100 310,000 300,000 1
<br />50 430,000 320,000 2
<br />30 530,000 350,000 3.33
<br />20 620,000 390,000 5
<br />10 800,000 510,000 10
<br />5 1,020,000 730,000 20
<br />3 1,250,000 970,000 33.3
<br />2 1,500,000 1,280,000 50
<br />1.5 1,840,000 1,650,000 66.7
<br />1.2 2,370,000 2,170,000 83.3
<br />1.1 2,830,000 2,540,000 90.9
<br />1.06 3,180,000 2,810,000 94.3
<br />1.04 3,500,000 3,020,000 I 96.2
<br />1.02 4,025,000 3,370,000 98.0
<br />
<br />*Chance of the selected discharge or a smaller discharge
<br />occurring in anyone year.
<br />
<br />~; /"; r. ( .......
<br />\,/ ..;.......... t_ V
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