DART Adult Passage Count Rolling 4 Year Geometric Mean for Spring Chinook Forecast Dates at Bonneville, Date Range 3/15-6/15
Year Annual Count 4 Year Rolling Geometric Mean
2017 * 107516 181337
2016 168510 183561
2015 265328 187615
2014 224941 175980
2013 112888 185440
2012 183897 198252
2011 205382 188432
2010 277351 149237
2009 147470 122559
2008 150082 110481
2007 80807 118149
2006 126156 152747
2005 97382 190962
2004 196290 274310
2003 225741 270560
2002 308180 178766
2001 414628 110054
2000 185774 81426
1999 43023 60127
1998 44267 44390
1997 124252 37753
1996 55235 37343
1995 12781 42622
1994 23160 63235
1993 118940 91237
1992 93739 84589
1991 61923 85617
1990 100366 98580
1989 87883 104296
1988 98378 104606
1987 108835 88459
1986 125749 76189
1985 88932 67152
1984 50310 62434
1983 59891 64435
1982 75888 63985
1981 66453 77480
1980 57077 91524
1979 58234 111472
1978 163158 131173
1977 129393 126917
1976 125598 132925
1975 111655 147823
1974 142994 155771
1973 155688 150702
1972 192098 159692
1971 137677 141259
1970 125269 128211
1969 196296 127593
1968 117612 105572
1967 93433 99459
1966 122872 98780
1965 92001 96972
1964 92648 100021
1963 90908 101089
1962 114119 94935
1961 104132 95849
1960 96668 108139
1959 70712 100651
1958 118575 127684
1957 168720 135255
1956 72549 136280
1955 183131 160840
1954 149301 151876
1953 173894 124643
1952 140758 97498
1951 145595 73249
1950 67729 73043
1949 65103 76492
1948 44843 70580
1947 143966 65276
1946 81456 54089
1945 47191 46949
1944 32808 52878
1943 67874 63696
1942 46237 66145
1941 75938 57800
1940 69073  
1939 78928  
1938 26961  
* 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 17:57:21 PDT. Columbia River DART (Data Access in Real Time) www.cbr.washington.edu/dart.