Willow Creek Weir Trapping Summary 11/07/2014


Willow Creek Weir Trapping Summary Update for Oct. 22 to Oct 28.


Fishery survey crews were only able to trap fish at the Willow Creek weir for two days because of high river flows.

Total combined Chinook decreased for the 4th week from 13 to 6.

Total combined Steelhead decreased for the 2nd week from 129 to 6


1. This weir is designed to capture and estimate the population of fall Chinook salmon, coho salmon and adult fall-run steelhead and is typically operated from late August through November (flows permitting). The weir is “fished” Sunday evening through Friday afternoon. The weir is not fished on weekends and afternoons to allow for fish passage.

2. The tail end of the spring chinook run is captured at Willow Creek, however attempts are not made to estimate this run of Chinook salmon above Willow Creek weir.

3. All fish deemed in good condition at Willow Creek weir are tagged with spaghetti tags inscribed with the CDFW address.


Notes:
1/ Summary based on real time unedited data. Not to be used for analysis.
2/ Provisionally, Chinook and coho grilse are < 56 cm FL. Steelhead
3/ Ads denote adipose fin-clipped fish; RMs denote right maxillary clipped fish. Both clip counts are a subset of the total shown.
4/ Weir out of operation for 4 days during jweek 38 due to emergency augmentation flow release from Lewiston Dam.

Chinook Coho Steelhead
Julian Trap Grilse 2 Adults Combined Grilse 2 Adults Combined 1/2 lbers 2 Adults Combined
week Inclusive dates days Total Ads 3 Total Ads 3 Total Ads 3 Total RMs 3 Total RMs 3 Total RMs 3 Total Ads 3 Total Ads 3 Total Ads 3
36 3-Sep 9-Sep 4 26 1 50 7 76 8 0 0 0 0 0 0 1 0 69 30 70 30
37 10-Sep 16-Sep 5 56 2 180 22 236 24 25 25 13 9 38 34 14 10 147 68 161 78
38 17-Sep 23-Sep 1 4 8 0 27 3 35 3 3 3 1 1 4 4 1 1 55 15 56 16
39 24-Sep 30-Sep 5 10 1 63 3 73 4 109 105 183 167 292 272 54 45 173 71 227 116
40 1-Oct 7-Oct 5 30 0 248 50 278 50 95 95 246 224 341 319 11 8 111 48 122 56
41 8-Oct 14-Oct 5 16 0 156 26 172 26 47 44 258 232 305 276 2 1 67 47 69 48
42 15-Oct 21-Oct 5 5 0 85 10 90 10 12 11 83 79 95 90 8 6 244 112 252 118
43 22-Oct 28-Oct 2 2 0 11 1 13 1 2 1 16 14 18 15 8 8 121 34 129 42
44 29-Oct 4-Nov 2 0 0 6 2 6 2 0 0 0 0 0 0 2 2 4 0 6 2
45 5-Nov 11-Nov
46 12-Nov 18-Nov
47 19-Nov 25-Nov
48 26-Nov 2-Dec
49 3-Dec 9-Dec
50 10-Dec 16-Dec
2014 Season Totals: 33 153 4 826 124 979 128 293 284 800 726 1093 1010 101 81 991 425 1092 506
2013 Season Totals: 73 155 2 668 73 823 75 77 73 494 381 571 454 112 62 2,033 898 2,145 960

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