BONNEVILLE DAM, OREGON

Monthly Total Precipitation (inches)

(350897)

File last updated on Apr 4, 2013
*** Note *** Provisional Data *** After Year/Month 201304
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.
YEAR(S) JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
1937 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 10.74 h 17.11 17.11
1938 8.82 7.74 13.35 5.16 2.58 0.53 0.00 0.56 0.79 6.11 9.31 8.22 63.17
1939 7.95 10.23 6.02 1.03 2.14 2.08 1.26 0.82 1.22 5.52 2.76 13.93 54.96
1940 3.66 b 17.47 8.34 3.79 2.73 0.14 0.81 0.24 4.83 6.64 9.79 7.20 65.64
1941 7.65 2.49 2.64 2.15 7.76 2.26 0.00 2.36 4.89 8.28 10.55 16.21 67.24
1942 2.72 8.45 4.37 3.84 5.03 4.08 1.98 0.23 0.00 5.64 26.58 19.38 82.30
1943 10.32 10.94 9.54 6.15 3.68 3.59 0.42 1.81 0.27 10.45 4.88 5.03 67.08
1944 5.52 7.01 4.58 5.14 2.34 3.01 0.00 0.05 4.94 1.82 8.96 3.93 47.30
1945 10.08 9.65 9.59 7.97 6.86 0.35 0.61 0.37 4.33 2.75 16.79 13.40 82.75
1946 12.84 11.26 8.75 3.73 1.60 4.13 1.55 0.09 1.14 9.64 13.31 12.56 80.60
1947 9.98 3.52 7.24 5.53 0.69 6.15 0.88 0.32 2.92 17.37 10.09 7.92 a 72.61
1948 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 1.75 1.41 4.45 4.16 16.04 19.51 47.32
1949 2.58 20.32 4.28 3.09 3.71 2.86 1.55 0.90 3.65 5.71 9.87 11.55 70.07
1950 16.44 9.89 f 12.05 5.95 2.37 1.37 1.12 1.04 3.78 16.14 17.22 14.13 91.61
1951 16.59 8.41 8.81 2.15 3.71 1.43 1.10 0.96 4.43 13.59 10.55 13.76 85.49
1952 9.33 6.25 9.58 3.02 2.94 3.61 0.02 0.16 0.91 0.78 2.45 14.88 53.93
1953 30.74 10.90 8.48 4.21 4.99 2.91 0.13 3.23 1.05 3.96 11.89 16.90 99.39
1954 16.70 7.33 5.36 a 5.69 3.77 5.27 2.33 1.53 1.51 5.09 a 7.40 8.80 a 70.78
1955 5.63 4.90 8.18 9.55 2.59 1.55 2.08 0.00 4.25 13.06 14.88 14.53 81.20
1956 18.87 8.00 10.76 0.99 a 2.25 2.76 0.00 3.68 3.07 9.67 3.27 13.35 76.67
1957 5.85 8.08 15.68 4.59 2.87 2.52 0.42 0.71 0.62 6.02 6.54 17.77 71.67
1958 13.44 10.54 4.28 10.07 1.20 4.32 0.00 0.38 2.59 4.07 18.80 14.52 84.21
1959 15.25 7.45 9.20 5.44 5.18 3.73 0.89 0.51 6.55 12.72 6.19 6.29 79.40
1960 7.13 9.77 11.26 6.71 9.51 2.12 0.00 3.94 1.36 6.75 19.76 6.33 84.64
1961 8.57 21.72 10.98 5.88 4.70 0.50 0.21 0.82 3.01 7.03 7.09 a 12.36 82.87
1962 5.18 4.90 a 10.91 7.62 5.75 1.33 0.16 1.94 4.24 6.10 15.44 6.81 70.38
1963 2.57 9.40 8.53 6.99 5.11 1.79 1.82 0.83 2.25 5.48 12.57 8.48 65.82
1964 17.43 3.20 7.31 4.73 2.58 3.59 1.30 2.40 1.94 3.14 12.67 23.52 83.81
1965 15.71 4.95 2.13 4.70 2.32 0.34 0.23 1.46 0.32 3.88 7.68 9.08 52.80
1966 12.36 4.73 8.83 3.00 1.30 2.11 1.35 0.89 1.87 6.74 10.29 11.95 65.42
1967 15.50 5.65 8.66 3.85 1.70 0.78 0.00 0.01 1.77 12.01 5.72 9.49 65.14
1968 8.39 12.90 5.25 3.56 3.26 3.81 1.41 6.67 3.20 11.49 15.05 13.97 88.96
1969 14.72 5.43 4.21 4.12 3.79 3.10 0.38 1.45 4.48 6.70 5.51 13.28 67.17
1970 21.65 7.98 6.12 7.38 3.01 1.21 0.37 0.00 4.59 6.19 14.49 14.47 87.46
1971 18.29 8.54 12.85 5.59 2.49 3.30 0.66 1.11 5.38 5.27 11.51 15.93 90.92
1972 14.79 13.18 11.93 9.28 2.97 1.57 1.19 0.18 6.65 1.15 8.20 13.48 84.57
1973 7.60 3.10 5.10 2.95 3.06 4.27 0.00 1.00 5.58 5.06 20.97 22.19 80.88
1974 16.16 10.86 10.80 7.03 5.79 2.19 1.66 0.14 0.32 2.01 11.09 15.45 83.50
1975 21.10 7.32 10.07 3.81 2.26 2.37 0.11 3.49 0.03 11.00 12.54 17.23 91.33
1976 13.15 12.55 6.97 5.01 2.93 1.94 1.21 2.97 1.02 2.73 3.18 3.64 57.30
1977 3.03 5.63 10.19 2.08 7.08 1.78 0.40 3.97 6.44 6.52 14.63 19.72 81.47
1978 7.20 7.37 2.37 7.10 5.98 2.20 0.86 4.55 3.53 1.57 7.11 9.89 59.73
1979 3.68 16.42 6.73 6.45 3.30 0.84 2.01 1.36 2.65 7.95 5.89 11.01 68.29
1980 11.14 9.31 7.25 4.96 2.28 3.90 0.27 1.98 2.61 1.85 13.28 20.24 79.07
1981 3.70 11.99 4.25 11.03 4.14 8.76 0.71 0.39 5.16 8.00 6.99 19.55 84.67
1982 11.94 13.75 6.20 6.12 1.10 0.92 0.95 1.78 5.60 6.63 7.28 13.00 75.27
1983 15.01 12.96 10.24 3.33 2.85 4.28 5.90 1.43 3.43 3.04 18.21 10.84 91.52
1984 9.04 7.80 9.94 6.12 8.22 4.79 0.00 0.04 5.01 9.14 16.90 9.62 86.62
1985 0.32 7.24 a 6.93 4.23 2.28 4.82 0.24 1.27 5.23 6.87 11.71 3.44 a 54.58
1986 12.06 16.49 6.01 6.36 2.76 0.84 1.52 0.10 5.33 2.60 11.58 4.72 70.37
1987 9.89 7.45 8.44 3.75 4.37 1.11 1.47 0.41 0.76 0.10 6.36 16.14 60.25
1988 12.27 5.73 9.71 7.18 4.94 2.73 1.22 0.53 2.67 1.14 19.88 7.82 75.82
1989 10.01 5.59 13.23 a 4.54 3.95 1.72 1.71 2.80 1.68 4.21 7.64 5.68 62.76
1990 18.57 10.82 3.95 7.11 3.49 4.24 0.46 1.43 0.40 12.33 10.05 7.47 80.32
1991 7.18 7.20 7.69 7.36 4.27 2.80 0.11 1.14 0.29 3.58 17.54 10.91 70.07
1992 7.70 8.93 2.16 8.65 0.62 0.97 1.24 1.82 3.41 3.62 13.92 10.72 63.76
1993 5.78 1.23 11.58 12.49 5.35 3.99 2.03 0.26 0.02 1.99 3.51 10.73 58.96
1994 11.10 11.01 4.88 4.35 1.69 3.23 0.23 0.33 1.84 11.27 15.61 15.95 81.49
1995 13.15 8.94 7.46 5.95 2.23 3.91 0.95 2.67 3.95 9.79 21.57 12.33 92.90
1996 15.28 17.51 5.07 9.71 6.66 2.44 0.52 0.67 2.50 13.26 17.05 27.94 a 118.61
1997 15.56 6.56 0.00 z 8.74 2.49 3.72 2.10 1.36 4.64 a 12.09 7.32 7.17 71.75
1998 14.15 a 8.46 8.54 3.26 6.57 3.50 0.10 0.00 2.23 5.47 15.31 19.63 87.22
1999 11.83 17.78 8.84 2.32 5.14 3.63 0.88 1.12 0.21 4.29 19.19 0.00 z 75.23
2000 15.40 13.04 5.41 3.65 7.42 a 3.49 0.06 0.07 1.87 7.28 6.75 8.39 72.83
2001 3.75 4.45 7.00 5.85 5.42 5.79 1.01 1.54 1.01 7.51 15.77 16.29 75.39
2002 14.64 a 7.58 8.91 5.66 2.50 3.74 0.17 0.01 2.04 0.90 4.71 14.45 65.31
2003 12.91 8.03 16.46 7.74 3.48 0.52 0.06 0.06 3.67 5.84 10.13 15.59 84.49
2004 15.28 a 6.47 4.62 2.35 5.06 3.03 0.02 5.52 5.44 7.16 4.54 7.93 67.42
2005 6.66 2.35 8.32 7.75 5.33 3.39 1.38 0.26 0.63 7.80 13.72 13.01 a 70.60
2006 19.36 6.10 6.62 3.64 2.71 2.79 0.67 0.24 2.20 2.75 28.96 15.24 91.28
2007 7.59 10.53 7.84 3.97 1.75 1.66 0.69 1.13 1.72 8.21 7.52 19.45 72.06
2008 11.09 5.86 9.46 6.37 3.30 3.22 0.25 3.06 0.46 3.79 12.35 10.03 c 69.24
2009 11.50 5.16 9.94 6.76 7.06 1.09 0.25 1.37 2.58 9.09 12.76 8.87 76.43
2010 10.42 6.70 9.52 6.44 7.23 c 8.05 0.55 0.02 4.64 8.22 14.39 17.41 93.59
2011 12.84 8.59 19.22 12.19 5.40 0.87 1.13 0.22 3.87 5.51 14.17 7.66 91.67
2012 15.71 8.86 17.46 7.34 4.62 6.43 0.74 0.00 0.01 12.76 14.62 16.39 104.94
2013 8.25 4.94 5.82 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 0.00 z 19.01
Period of Record Statistics
MEAN 11.28 8.81 8.26 5.60 3.87 2.84 0.85 1.27 2.80 6.61 11.74 12.72 76.03
S.D. 5.41 4.15 3.44 2.44 1.93 1.73 0.89 1.38 1.88 3.84 5.51 5.03 13.09
SKEW 0.48 0.96 0.71 0.59 0.68 0.91 2.60 1.66 0.19 0.58 0.57 0.32 0.33
MAX 30.74 21.72 19.22 12.49 9.51 8.76 5.90 6.67 6.65 17.37 28.96 27.94 118.61
MIN 0.32 1.23 2.13 0.99 0.62 0.14 0.00 0.00 0.00 0.10 2.45 3.44 47.30
NO YRS 75 74 74 74 74 74 75 75 75 75 75 75 71