Tucannon River Spring Chinook
Estimated total returns of natural and hatchery-origin spring Chinook to the Tucannon River, 1985-2008 (from Mike Gallinat, WDFW). The value provide for 2010 is a preseason prediction based on past returns of jack salmon.
| Spring Chinook | ||||
|---|---|---|---|---|
| Year | Natural | Hatchery Endemic | Total | Natural % Total |
| 1985 | 591 |
0 |
591 |
100.0 |
| 1986 | 636 |
0 |
636 |
100.0 |
| 1987 | 582 |
0 |
582 |
100.0 |
| 1988 | 410 |
19 |
429 |
95.6 |
| 1989 | 336 |
109 |
445 |
75.5 |
| 1990 | 494 |
260 |
754 |
65.5 |
| 1991 | 260 |
268 |
528 |
49.2 |
| 1992 | 418 |
335 |
753 |
55.5 |
| 1993 | 317 |
272 |
589 |
53.8 |
| 1994 | 98 |
42 |
140 |
70.0 |
| 1995 | 21 |
33 |
54 |
38.9 |
| 1996 | 165 |
85 |
250 |
66.0 |
| 1997 | 160 |
191 |
351 |
45.6 |
| 1998 | 85 |
59 |
154 |
59.0 |
| 1999 | 3 |
242 |
245 |
1.2 |
| 2000 | 82 |
257 |
339 |
24.2 |
| 2001 | 718 |
294 |
1012 |
70.9 |
| 2002 | 350 |
655 |
1005 |
34.8 |
| 2003 | 248 |
196 |
444 |
55.9 |
| 2004 | 400 |
173 |
573 |
69.8 |
| 2005 | 289 |
131 |
420 |
68.8 |
| 2006 | 140 |
113 |
253 |
55.3 |
| 2007 | 198 |
146 |
344 |
57.6 |
| 2008 | 534 |
657 |
1191 |
44.0 |
| 2009 | 750 |
111 |
1861 |
40.3 |
| 2010 | 774 |
796 |
1570 |
49.3 |
| *2010 Population Number based on preseason estimates. | ||||