Header for Water Supply Period Rankings Page

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SNAKE - LOWER GRANITE DAM   (LGDW1)
Period Rankings - 1960 to 2019
APR-AUG Normal -- 21091 (KAF)
Rank Year Period Volume
(KAF)
Percent of Normal Exceedance
Probability*
1 1974 36344.00 172 1.667 %
2 1997 36205.00 172 3.333 %
3 1971 35391.00 168 5.000 %
4 2011 35002.00 166 6.667 %
5 1984 34679.00 164 8.333 %
6 1982 32847.00 156 10.000 %
7 1965 31884.00 151 11.667 %
8 1972 31292.00 148 13.333 %
9 1975 30735.00 146 15.000 %
10 2017 30036.90 142 16.667 %
11 1976 30028.00 142 18.333 %
12 1996 29887.00 142 20.000 %
13 1999 27524.00 131 21.667 %
14 1983 27362.00 130 23.333 %
15 1964 27275.00 129 25.000 %
16 2006 26378.00 125 26.667 %
17 1998 25158.00 119 28.333 %
18 1969 25035.00 119 30.000 %
19 2019 24883.34 118 31.667 %
20 2009 24718.00 117 33.333 %
21 1986 24642.00 117 35.000 %
22 2008 24642.00 117 36.667 %
23 2018 24255.12 115 38.333 %
24 1970 24164.00 115 40.000 %
25 1978 23938.00 113 41.667 %
26 2012 23738.00 113 43.333 %
27 1993 23396.00 111 45.000 %
28 1995 23004.00 109 46.667 %
29 1967 22386.00 106 48.333 %
30 1962 21470.00 102 50.000 %
31 1980 21466.00 102 51.667 %
32 2014 20780.00 99 53.333 %
33 1985 20255.00 96 55.000 %
34 1963 20036.00 95 56.667 %
35 2002 19722.00 94 58.333 %
36 1989 19571.00 93 60.000 %
37 1981 19534.00 93 61.667 %
38 2010 19500.00 92 63.333 %
39 2000 18465.00 88 65.000 %
40 2003 18299.00 87 66.667 %
41 1979 18272.00 87 68.333 %
42 1961 17849.90 85 70.000 %
43 2016 17429.91 83 71.667 %
44 2004 16753.00 79 73.333 %
45 1990 16658.00 79 75.000 %
46 1968 16456.00 78 76.667 %
47 1991 16312.00 77 78.333 %
48 2005 14750.00 70 80.000 %
49 2013 14716.00 70 81.667 %
50 1966 14583.00 69 83.333 %
51 2007 13479.00 64 85.000 %
52 1988 13430.00 64 86.667 %
53 1973 12602.00 60 88.333 %
54 1994 12545.00 59 90.000 %
55 2001 11684.00 55 91.667 %
56 2015 11466.00 54 93.333 %
57 1987 11386.00 54 95.000 %
58 1992 9932.00 47 96.667 %
59 1977 9268.00 44 98.333 %

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