DART Adult Passage Count Rolling 4 Year Arithmetic Mean for Spring Chinook Forecast Dates at Bonneville, Date Range 3/15-6/15
Year Annual Count 4 Year Rolling Arithmetic Mean
2017 * 107516 191573
2016 168510 192916
2015 265328 196763
2014 224941 181777
2013 112888 194879
2012 183897 203525
2011 205382 195071
2010 277351 163927
2009 147470 126128
2008 150082 113606
2007 80807 125158
2006 126156 161392
2005 97382 206898
2004 196290 286209
2003 225741 283580
2002 308180 237901
2001 414628 171923
2000 185774 99329
1999 43023 66694
1998 44267 59133
1997 124252 53857
1996 55235 52529
1995 12781 62155
1994 23160 74440
1993 118940 93742
1992 93739 85977
1991 61923 87137
1990 100366 98865
1989 87883 105211
1988 98378 105473
1987 108835 93456
1986 125749 81220
1985 88932 68755
1984 50310 63135
1983 59891 64827
1982 75888 64413
1981 66453 86230
1980 57077 101965
1979 58234 119095
1978 163158 132451
1977 129393 127410
1976 125598 133983
1975 111655 150608
1974 142994 157114
1973 155688 152683
1972 192098 162835
1971 137677 144213
1970 125269 133152
1969 196296 132553
1968 117612 106479
1967 93433 100238
1966 122872 99607
1965 92001 97419
1964 92648 100451
1963 90908 101456
1962 114119 96407
1961 104132 97521
1960 96668 113668
1959 70712 107639
1958 118575 135743
1957 168720 143425
1956 72549 144718
1955 183131 161771
1954 149301 152387
1953 173894 131994
1952 140758 104796
1951 145595 80817
1950 67729 80410
1949 65103 83842
1948 44843 79364
1947 143966 76355
1946 81456 57332
1945 47191 48527
1944 32808 55714
1943 67874 64780
1942 46237 67544
1941 75938 62725
1940 69073  
1939 78928  
1938 26961  
* 2017 annual count and mean may be incomplete, contains current year data.

Query Notes

  1. Rolling 4 Year Arithmetic Mean is calculated using the annual count, within the date range, for the specified Year and the three previous years.
Generated
24 Sep 2017 03:43:19 PDT. Columbia River DART (Data Access in Real Time) www.cbr.washington.edu/dart.