U.S. Dept Commerce/NOAA/NMFS/NWFSC/Publications
NOAA-NMFS-NWFSC TM-9: Effectiveness of Predator Removal for Protecting Juvenile Fall Chinook Salmon Released from Bonneville Hatchery, 1991

Appendix Table C1. Daily purse seine and beach seine fishing effort, water temperatures, and Secchi disk transparency measurements at Jones Beach, Tanner Creek vs. midstream Columbia River release, 1991.

  Number of sets       Number of sets    
Date Purse Beach Temp.°C Secchi
depth (m)
   Date Purse Beach Temp.°C Secchi
depth (m)

24 Jun 1 3 15 0.8 7 Jul 7 16 18 0.9
25 Jun 3 3 16 1.1 8 Jul 10 11 17 0.9
26 Jun 4 3 --a 0.9 9 Jul 13 13 18 0.8

27 Junb

7 3 15 0.8 10 Jul 7 5 18 0.8
28 Jun 10 5 15 0.9 11 Jul 8 5 18 0.9
29 Jun 12 3 15 0.9 12 Jul 7 5 18 0.9
30 Jun 8 4 16 1.1 13 Jul 8 3 19 0.8
1 Jul 9 5 16 1.1 14 Jul 10 2 17 0.9
2 Jul 10 2 15 1.1 15 Jul 4 2 18 0.9
3 Jul 16 2 18 0.9 16 Jul 8 1 18 0.9
4 Jul 12 0 18 1.0 17 Jul 4 0 18 0.9
5 Jul 17 5 18 0.9 18 Jul 4 0 18 0.9
6 Jul 11 16 18 0.9 19 Jul 3 0 18 1.1

a --- = data not available.
b First recovery of study fish.



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