Chum Salmon Spawning Ground Surveys Below Bonneville Dam, 2011-12.
Survey Area   Date Lives Dead** Redds***  
Ives/Pierce Island Complex 21-Oct 2 0 0
24-Oct 0 0 0
28-Oct 12 0 0 1 ft. vis.
1-Nov 19 0 0 2.5 ft. vis.
8-Nov 2 1 0 3 ft. vis.
15-Nov 37 1 12 3 ft. vis.
22-Nov 38 2 6 3 ft. vis.
29-Nov 151 24 Mass Redds 5 ft. vis.
6-Dec 226 23 Mass Redds 5 ft. vis.
14-Dec 29 8 Mass Redds 12 ft. vis.
20-Dec 13 25 NC 5 ft. vis.
27-Dec 11 13 NC 12 ft. vis.
3-Jan 0 2 NC 4 ft. vis.
10-Jan 0 5 NC 10 ft. vis.
17-Jan 0 0 NC 3 ft. vis.
Multnomah Falls Area 3-Nov 0 0 0 3 ft. vis.
7-Nov 0 0 0 3 ft. vis.
14-Nov 10 0 5 5 ft. vis.
17-Nov 18 0 6 3 ft. vis.
21-Nov 67 1 15 6+ft. vis.
28-Nov 115 7 78 6+ft. vis.
1-Dec 113 9 NC 5 ft. vis.
5-Dec 126 9 Mass redds 6+ft. vis.
8-Dec 62 8 NC 3 ft. vis.
12-Dec 45 1 NC 3 ft. vis., rough
19-Dec 30 3 NC
27-Dec 3 3 NC 12 ft. vis.
29-Dec 2 0 NC 4 ft. vis.
3-Jan 0 0 NC 4 ft. vis.
Horsetail Falls Area 3-Nov 1 0 0 3 ft. vis
7-Nov 0 0 0 3 ft. vis.
14-Nov 0 0 0 3 ft. vis
17-Nov 0 0 0 2 ft. vis
21-Nov 3 0 4 5 ft. vis.
28-Nov 18 1 12 6+ vis.
1-Dec 29 0 NC 4 ft. vis.
5-Dec 20 2 6 4 ft. vis.
8-Dec 7 2 NC <1ft. vis.
12-Dec 6 1 NC 3 ft. vis.
19-Dec 0 2 NC
27-Dec 0 0 NC 12 ft. vis.
29-Dec 0 0 NC 4 ft. vis.
3-Jan 0 0 NC 4 ft. vis.
St. Cloud Area 3-Nov 0 0 0 2 ft. vis
7-Nov 0 0 0 3 ft. vis.
14-Nov 4 0 0 3 ft. vis
17-Nov 1 0 0 1 ft. vis.
21-Nov 36 0 6 3 ft. vis.
28-Nov 49 2 4 6+ vis.
1-Dec 20 0 NC 3 ft. vis.
5-Dec 38 3 10 2 ft. vis
8-Dec 3 0 NC 3 ft. vis.
12-Dec 1 1 NC 1 ft. vis.
19-Dec 4 2 NC
27-Dec 0 0 NC 12 ft. vis.
29-Dec 0 0 NC 4 ft. vis.
3-Jan 0 0 NC 4 ft. vis.
Wood's Landing 4-Nov 0 0 0 Low water conditions, fish not able to access spawning area.
8-Nov 4 0 3
18-Nov 97 1 Mass redds 5 ft. vis.
23-Nov 133 5 Mass redds 4 ft. vis.  Best vis. close to bank. Columbia R. water is murky.
2-Dec 247 57 Mass redds 6+ vis.
9-Dec 110 15 Mass redds 6+ vis. Low water conditions at spawning site.
16-Dec 157 27 Mass redds 12 ft. vis.
23-Dec 77 15 19
30-Dec 0 0 NC <1 ft. vis. High water, muddy.
6-Jan 11 4 NC 8 ft. vis.
13-Jan 0 1 NC 10 ft. vis.
Rivershore Seeps 4-Nov 0 0 0 3 ft. vis.
8-Nov 9 0 4 4 ft. vis.
18-Nov 61 1 8 4 ft. vis. Difficult to count redds.
23-Nov 6 0 NC 2 ft. vis. Unable to count redds or fish. Columbia R. water is murky.
2-Dec 278 18 Mass redds 6+ vis.
9-Dec 150 17 Mass redds 6+ vis.
16-Dec 92 36 Mass redds 12 ft. vis.
23-Dec 50 10 7
30-Dec 0 0 NC <1 ft. vis. High water, muddy.
6-Jan 2 0 NC 8 ft. vis.
13-Jan 0 0 NC 10 ft. vis.
Joseph's Creek 4-Nov 0 0 0
8-Nov 0 0 0
18-Nov 0 0 0
23-Nov 0 0 0
2-Dec 2 0 1
9-Dec 2 4 2
16-Dec 1 0 0
23-Dec No count
30-Dec No count, high water.
6-Jan 0 0 0
13-Jan 0 0 0
Hatchery Outlet 4-Nov 0 0 0
8-Nov 0 0 0
18-Nov 0 0 0
23-Nov 0 0 0
2-Dec 1 2 0
9-Dec 1 0 0
16-Dec 0 0 0
23-Dec No count
30-Dec No count, high water.
6-Jan 0 1 0
13-Jan 0 0 0
**Dead are newly sampled fish only
***Redds are an instantaneous count for the day, not cumulative.