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 A1. Short-terma tag loss for subyearling chinook salmon, 1991.

    Released 24 June
 Released 28 June
   

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Creek

Midstream
Columbia R.

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Creek

Midstream
Columbia R.
Date
marked		 Time
sampled		 NTb Samplec NT Sample NT Sample NT Sample
3 June 1330 0 100 1 100 8 100 0 100
  1500 -d --- - --- 1 100 - ---
4 June 0830 3 100 0 100 4 100 0 100
  1030 2 100 0 100 0 100 0 100
  1330 0 100 2 100 0 100 1 100
  1500 1 100 5 100 0 100 3 100
5 June 0830 0 100 0 100 2 100 0 100
  1030 0 100 0 100 1 100 2 100
  1315 0 100 0 100 0 100 1 100
  1445 0 100 0 100 1 100 1 100
6 June 0845 0 100 0 100 2 100 0 100
  1045 1 100 0 100 0 100 0 100
  1300 0 100 0 100 1 100 0 100
  1430 0 100 0 100 1 100 0 100
7 June 0830 2 100 0 100 0 100 0 100
  1036 0 100 0 100 1 100 0 100
  1317 2 100 0 100 0 100 0 100
  1510 1 100 0 100 0 100 2 100
8 June 0815 0 100 0 100 1 100 0 100
  1038 0 100 0 100 0 100 0 100
  1320 0 100 1 100 0 100 0 100
  1520 0 100 0 100 0 100 0 100
9 June 0840 0 100 0 100 0 100 0 100
  1036 0 100 0 100 0 100 0 100
  1310 0 100 0 100 0 100 2 100
 
    Released 24 June
 Released 28 June
    Tanner
Creek		 Midstream
Columbia R.		 Tanner
Creek		 Midstream
Columbia R.
Date
marked		 Time
sampled		 NTb Samplec NT Sample NT Sample NT Sample
  1515 0 100 0 100 0 100 0 100
12 June 0845 0 100 0 100 0 100 1 100
  1040 1 100 0 100 0 100 1 100
  1310 0 100 0 100 0 100 0 100
  1505 1 100 0 100 0 100 0 100
13 June 0840 0 100 2 100 0 100 0 100
  1040 0 100 0 100 0 100 0 100
  1320 0 100 2 100 0 100 0 100
  1510 0 100 0 100 0 100 0 100
14 June 0840 1 100 0 100 0 100 0 100
  1040 0 100 1 100 5 100 0 100
  ---- 1 100 1 100 0 100 0 100
  1500 0 100 0 100 0 100 0 100
17 June 0840 0 100 1 100 0 100 0 100
  1050 0 100 0 100 0 100 1 100
  1250 0 100 1 100 0 100 0 100
  1640 0 100 0 100 0 100 0 100
  Total 16 4,100 17 4,100 28 4,200 15 4,100
  Percent 0.4 0.4 0.7 0.4

a Samples taken from the outfall pipe from marking trailer immediately after tagging.
b NT = Number of fish passed through the tag detector which tested negative for a tag.
c Number of fish sampled for tag loss.
d "-" = data not available.

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