1997/98
1998/99
DG surveys conducted by NPS.  LC and ACR surveys conducted by SPAWN.
1999/2000
DG surveys conducted by NPS.  LC and ACR surveys conducted by SPAWN.  Live coho observations have been corrected from daily counts to compensate for coho that presumably were double-counted.
2000/01
ARC, LC, and WC surveys conducted by SPAWN.  Live coho and some redd observations have been corrected from daily counts to compensate for coho that presumably were double-counted.