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COLUMBIA - THE DALLES DAM   (TDAO3)
Period Rankings - 1949 to 2024
 APR-AUG Normal -- 89196 (KAF)
Rank Year Period Volume
(KAF) 		Percent of Normal Exceedance
Probability*
1 1997 132900.98 149 1.299 %
2 2011 127226.74 143 2.597 %
3 1956 119192.80 134 3.896 %
4 2012 117823.79 132 5.195 %
5 1982 115254.73 129 6.494 %
6 1976 113363.43 127 7.792 %
7 1999 111941.79 126 9.091 %
8 1996 111069.47 125 10.390 %
9 1950 110324.70 124 11.688 %
10 2017 108859.26 122 12.987 %
11 1972 104845.95 118 14.286 %
12 1984 103992.51 117 15.584 %
13 1951 103289.32 116 16.883 %
14 1975 102516.24 115 18.182 %
15 1954 101817.59 114 19.481 %
16 1991 101734.06 114 20.779 %
17 1971 101501.82 114 22.078 %
18 2018 101390.33 114 23.377 %
19 1983 100926.05 113 24.675 %
20 2006 98043.52 110 25.974 %
21 1974 96869.02 109 27.273 %
22 1959 96597.09 108 28.571 %
23 1965 96581.22 108 29.870 %
24 2022 95913.95 108 31.169 %
25 2002 95311.70 107 32.468 %
26 2008 93742.45 105 33.766 %
27 1990 93416.67 105 35.065 %
28 2014 93196.55 104 36.364 %
29 1952 92725.35 104 37.662 %
30 1964 92106.51 103 38.961 %
31 2020 92083.60 103 40.260 %
32 1978 91903.64 103 41.558 %
33 1957 91725.68 103 42.857 %
34 1998 91445.22 103 44.156 %
35 1981 91411.04 102 45.455 %
36 1967 89520.06 100 46.753 %
37 1986 87975.85 99 48.052 %
38 1961 87724.42 98 49.351 %
39 1995 87472.14 98 50.649 %
40 1980 87293.34 98 51.948 %
41 2013 87191.46 98 53.247 %
42 1949 87155.76 98 54.545 %
43 1969 86854.87 97 55.844 %
44 2000 85673.80 96 57.143 %
45 1953 84305.51 95 58.442 %
46 1960 83663.26 94 59.740 %
47 1958 83490.30 94 61.039 %
48 1989 83470.25 94 62.338 %
49 1955 83436.75 94 63.636 %
50 1993 82659.74 93 64.935 %
51 2009 82286.15 92 66.234 %
52 2019 80877.25 91 67.532 %
53 1985 80065.87 90 68.831 %
54 1962 79374.60 89 70.130 %
55 2007 79100.32 89 71.429 %
56 2016 79028.58 89 72.727 %
57 2010 77462.48 87 74.026 %
58 2003 75191.23 84 75.325 %
59 2023 74301.24 83 76.623 %
60 2004 73414.56 82 77.922 %
61 1963 73153.64 82 79.221 %
62 1979 72552.75 81 80.519 %
63 2024 72413.37 81 81.818 %
64 2021 71560.78 80 83.117 %
65 1966 69263.05 78 84.416 %
66 1988 68947.67 77 85.714 %
67 2005 68337.92 77 87.013 %
68 1994 67980.35 76 88.312 %
69 1987 66584.66 75 89.610 %
70 1970 64907.15 73 90.909 %
71 1968 64904.18 73 92.208 %
72 1992 60668.75 68 93.506 %
73 2015 58160.93 65 94.805 %
74 2001 53593.65 60 96.104 %
75 1977 49097.41 55 97.403 %
76 1973 41987.14 47 98.701 %

*Exceedance Probability: The probability that a specific seasonal volume will be exceeded.