DART Adult Passage Count Rolling 4 Year Geometric Mean for Spring/Summer Chinook at Bonneville, Date Range 3/15-7/31
Year Annual Count 4 Year Rolling Geometric Mean
2017 * 171660 265924
2016 256081 267740
2015 381985 263264
2014 297812 242583
2013 176396 251119
2012 239382 257974
2011 275376 247718
2010 341989 198922
2009 196461 172630
2008 203525 162235
2007 114506 172783
2006 193975 221062
2005 153246 264284
2004 261846 349280
2003 306818 329940
2002 396249 223703
2001 467523 139415
2000 208492 103486
1999 64838 78026
1998 59775 61620
1997 141939 54950
1996 67377 54050
1995 25222 60156
1994 37800 79319
1993 132865 105687
1992 103385 100825
1991 76236 104954
1990 119141 120257
1989 110055 126155
1988 121387 125393
1987 131402 108873
1986 144293 93976
1985 107418 83548
1984 68987 78843
1983 72944 81786
1982 90140 85143
1981 85190 103151
1980 79877 120856
1979 85679 148445
1978 194186 170312
1977 160531 167212
1976 181808 173833
1975 148455 189351
1974 180431 204867
1973 187508 203555
1972 255945 224157
1971 203428 205560
1970 175854 199480
1969 275741 201890
1968 181008 176272
1967 180407 173721
1966 184507 162857
1965 160243 159225
1964 170753 160425
1963 139337 156432
1962 168591 159357
1961 165129 161322
1960 154378 182666
1959 150052 185365
1958 177064 211543
1957 271444 221834
1956 163706 212340
1955 254519 223075
1954 214117 208481
1953 227873 175243
1952 199409 141479
1951 194171 121872
1950 106893 118288
1949 96805 121466
1948 109797 112453
1947 172318 88962
1946 118853 73195
1945 71116 62965
1944 43005 66540
1943 78966 79561
1942 65087 84432
1941 88691 73679
1940 87904  
1939 100150  
1938 37744  
* 2017 annual count and mean may be incomplete, contains current year data.

Query Notes

  1. Rolling 4 Year Geometric Mean is calculated using the annual count, within the date range, for the specified Year and the three previous years.
Generated
24 Sep 2017 17:55:02 PDT. Columbia River DART (Data Access in Real Time) www.cbr.washington.edu/dart.