DART Adult Passage Count Rolling 4 Year Arithmetic Mean for Chinook at Bonneville, Date Range 1/1-12/31
Year Annual Count 4 Year Rolling Arithmetic Mean
2017 * 428137 903966
2016 697987 1079348
2015 1337099 1052335
2014 1152642 887353
2013 1129664 801642
2012 589937 639297
2011 677171 621549
2010 809799 521244
2009 480284 442222
2008 518942 464754
2007 275954 546525
2006 493708 707865
2005 570413 801947
2004 846026 876275
2003 921314 765197
2002 870035 611613
2001 867728 456320
2000 401711 329556
1999 306981 297349
1998 248860 267959
1997 360673 257793
1996 272884 232459
1995 189419 219160
1994 208197 228408
1993 259337 250490
1992 219688 278957
1991 226411 327009
1990 296525 387559
1989 373205 406110
1988 411896 386916
1987 468610 338058
1986 370729 267322
1985 296429 236617
1984 216465 220585
1983 185665 218411
1982 247911 241071
1981 232299 277743
1980 207770 311333
1979 276306 386334
1978 394600 423649
1977 366657 416688
1976 507773 424683
1975 425566 396354
1974 366759 391388
1973 398635 395893
1972 394456 423131
1971 405702 409799
1970 384780 399912
1969 507588 388745
1968 341128 341337
1967 366153 342160
1966 340111 320262
1965 317956 306890
1964 344422 297896
1963 278560 275803
1962 286625 292420
1961 281980 324869
1960 256049 355195
1959 345028 366412
1958 416419 370118
1957 403286 346250
1956 300917 328549
1955 359853 358539
1954 320947 351523
1953 332479 360630
1952 420879 346934
1951 331788 346853
1950 357375 383975
1949 277697 406170
1948 420555 411117
1947 480276 366169
1946 446152 324380
1945 297488 313342
1944 240763 354331
1943 313120 392033
1942 401998 385292
1941 461443 352891
1940 391573  
1939 286156  
1938 272395  
* 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 03:46:00 PDT. Columbia River DART (Data Access in Real Time) www.cbr.washington.edu/dart.