DART Adult Passage Count Rolling 4 Year Geometric Mean for Spring Chinook at Bonneville, Date Range 3/15-5/31
Year Annual Count 4 Year Rolling Geometric Mean
2017 * 83616 147260
2016 135770 147120
2015 220250 152301
2014 188078 142140
2013 83299 151758
2012 155928 164330
2011 167097 155286
2010 244385 123395
2009 114525 97805
2008 124334 87700
2007 66624 94646
2006 96456 123318
2005 74038 159333
2004 168656 241596
2003 192010 244785
2002 268813 163981
2001 391367 100774
2000 177740 74034
1999 38669 54254
1998 38342 38874
1997 114000 33106
1996 51264 32873
1995 10192 37640
1994 20169 57969
1993 110820 85210
1992 88115 78852
1991 57339 79217
1990 94158 90662
1989 81266 95939
1988 89759 96500
1987 98369 81908
1986 118072 70795
1985 83182 62123
1984 46589 57914
1983 54898 59776
1982 70011 58818
1981 62827 71144
1980 52874 83551
1979 51462 101010
1978 149863 120465
1977 119508 117259
1976 112952 122457
1975 104104 138664
1974 134535 145303
1973 142148 138468
1972 185704 145551
1971 125517 124151
1970 110952 112540
1969 173543 112933
1968 98302 94266
1967 84748 92541
1966 112510 89853
1965 84246 85236
1964 91301 88671
1963 75323 82725
1962 91106 78508
1961 98668 74823
1960 69169 81134
1959 61100 79335
1958 75165 102701
1957 136411 118831
1956 63237 125563
1955 171580 145524
1954 134720 131639
1953 170052 106303
1952 114093 78307
1951 114888 61236
1950 57289 63574
1949 50073 66243
1948 42668 63951
1947 133458 58824
1946 67533 49232
1945 43496 43311
1944 30544 49175
1943 65482 59637
1942 40450 62036
1941 72283 53851
1940 66070  
1939 76673  
1938 22967  
* 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 03:43:52 PDT. Columbia River DART (Data Access in Real Time) www.cbr.washington.edu/dart.