| Table 1. Columbia River
mainstem spawning ground surveys, 2001 |
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Below Bonneville Dam |
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| Fall Chinook |
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Cwt |
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| Date |
Redds |
Live |
Dead |
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Sampled |
recoveries |
GSI samples |
Comments |
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| 3-Oct |
0 |
1(tule) |
0 |
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0 |
0 |
0 |
1 coho, 1 steelhead carcass mark sampled |
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| 8-Oct |
0 |
0 |
2(tule) |
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2 |
0 |
0 |
prespawn mortality females, one with gillnet
marks |
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| 15-Oct |
0 |
0 |
4 |
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4 |
0 |
0 |
orange circles |
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| 22-Oct |
1 |
2 |
0 |
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0 |
0 |
0 |
9 coho carcasses (1cwt recovery) 1 orange circle
recap |
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| 26-Oct |
1 |
2 |
1 |
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1 |
0 |
0 |
red square |
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| 29-Oct |
1 |
2 |
3 |
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3 |
0 |
0 |
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| 2-Nov |
2 |
7(2jk) |
1 |
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1 |
0 |
0 |
Redds in main channel |
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| 5-Nov |
33 |
30(1jk) |
9 |
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8 |
0 |
0 |
One
chf redd and two chf lives in channel break; observation conditions near
perfect |
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All other chf activity is in main channel along
Pierce island (5-10 feet deep) |
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| 9-Nov |
48 |
83 (4jk) |
3 |
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3 |
0 |
0 |
7 redds, 28 lives and two jacks in the channel
break |
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1 redd and two lives below Hamilton Creek |
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| 12-Nov |
31 |
99(8jk) |
21 |
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21 |
0 |
0 |
Visibility
diminished in main channel, 26 lives,
2 jacks and 5 redds |
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below
Hamilton creek, 16 lives and 5 redds in channel break |
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| 16-Nov |
42 |
87(4jk) |
35 |
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35 |
1 |
0 |
31 lives 26 redds in Ives/Pierce channel break |
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8 redds below Hamilton crk. |
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| 19-Nov |
8 |
72(8jk) |
34 |
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34 |
0 |
0 |
NO COUNTS done in the main channel due to High
Winds |
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8
new chinook redds and 72 lives (8 jacks) spawning on upper riffle below Hamilton creek |
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| 26-Nov |
45 |
49(4jk) |
75 |
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75 |
1 |
0 |
45 redds, 12 lives in main channel. |
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15 lives in break 30 lives below Hamilton Creek. |
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| 30-Nov |
6 |
10 |
43 |
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43 |
0 |
0 |
5 redds below Hamilton (1 in channel break) |
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| 3-Dec |
4 |
20(4jk) |
13 |
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13 |
0 |
0 |
redds and lives below Hamilton |
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| 6-Dec |
2 |
7 |
16 |
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16 |
0 |
0 |
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| 10-Dec |
3 |
5 |
29 |
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29 |
0 |
0 |
Below Hamilton |
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| 13-Dec |
0 |
0 |
19 |
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19 |
0 |
0 |
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| 17-Dec |
0 |
0 |
1 |
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1 |
0 |
0 |
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| 20-Dec |
0 |
4 |
1 |
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1 |
0 |
0 |
below Hamilton creek |
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| Chum |
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| Date |
Redds |
Live |
Dead |
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Sampled |
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GSI samples |
Comments |
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| 5-Nov |
0 |
10 |
0 |
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0 |
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0 |
10 live chum observed behind Pierce island (not
spawning) |
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| 9-Nov |
0 |
1 |
2 |
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2 |
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2 |
1 live behind Ives island |
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| 12-Nov |
8 |
54 |
1 |
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1 |
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0 |
12
lives observed along Washington shore between Duncan creek and Ives Island; |
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12 lives along the Pierce ranch; 26 lives and 6
redds below Hamilton creek (includes those captured in tangle net), |
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2 redds
and 4 lives in the Ives/Pierce island channel break. |
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| 16-Nov |
6 |
39 |
2 |
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2 |
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1 |
1 new redd with 5 lives behind Ives in "the
pocket" (gauge 2 area) |
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5 new redds and a group of 20-30 live chum
observed below Woodward creek (off the Washington shore) |
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| 19-Nov |
40 |
92 |
1 |
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1 |
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1 |
32 redds and 85 lives below Hamilton Creek; In
the pocket (gauge 2 area): 1 dewatered redd , 1 at the waters edge |
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8 redds and 7 lives in the Ives/Pierce channel
break; 1 live chum and no redds observed below Woodward Creek (low
visibility) |
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| 26-Nov |
181 |
239 |
16 |
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16 |
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5 |
49 redds and 60 lives in the Ives/Pierce channel
break; 62 live chum and 65 redds observed below Woodward Creek. |
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5 redds and 22 lives below Hamilton Creek; In
the pocket (gauge 2 area): 19 redds, 30 lives; 46 redds, 62 lives above
Hamilton Creek. |
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| 30-Nov |
162 |
230 |
26 |
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26 |
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6 |
OR
side (above the mouth of McCord creek) 18 redds and 28 lives; Above Hamilton Creek: 38 redds 54 lives; Below Hamilton Creek 22
redds 38 lives; the pocket 19 redds |
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20 lives; channel break: 65 redds, 90 lives;
Woodward (poor visibility) 7 lives |
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| 3-Dec |
56 |
101 |
20 |
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20 |
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12 |
Above Hamilton Creek: 24 lives, 41 redds;
Below Hamilton Creek: (including pocket): 5 lives, no new redds; Channel Break: 14 redds, 23 lives; |
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OR side (avove McCord Creek) 7 redds, 8
lives; Woodward creek: 6 redds and 23
lives |
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| 6-Dec |
43 |
107 |
37 |
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37 |
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14 |
OR side: 14 lives + 4 redds; channel break: 46
lives + 15 redds; Below Hamilton Creek: 6 lives + 2 redds in "the
pocket" |
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Above
Hamilton Creek: 32 lives + 20redds; Woodward Creek: 9 lives + 2 redds |
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| 10-Dec |
71 |
118 |
88 |
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88 |
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18 |
OR side: 12 lives + 7 redds; channel break: 26
lives + 17 redds; Below Hamilton Creek: no new redds in "the
pocket" |
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Above Hamilton Creek: 52 lives + 39 redds |
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| 13-Dec |
35 |
80 |
41 |
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41 |
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3 |
40 lives + 26 redds above Hamilton Creek; 19
lives + 5 redds in channel break |
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10 lives and no redds observed below Woodward
Creek; 11 live and 4 chum at McCord Creek |
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| 17-Dec |
4 |
4 |
15 |
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15 |
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3 |
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| 20-Dec |
17 |
18 |
11 |
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11 |
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3 |
no new redds |
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| 12-Dec.*
(outside index area) |
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St.
Cloud: 21 redds marked on GPS (12 above water level), counts of lives and
redds were incomplete in this area due to tangle net activities. |
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Another 20 redds (13 on GPS) and 24 lives
observed 1/2 mile downstream from St. Cloud. |
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Hamilton boat ramp: 4 redds + 5 lives; 8 redds +
6 lives |
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| 14-Dec. |
14 live chum, 6 redds and 40 carcasses sampled
along Oregon shore in vacinity of Multnomah falls. Visibility was limited to 1 foot. |
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| 19-Dec |
St.
Cloud: 8 lives and no redds
observed. Multnomah area: 2 lives and
no redds observed. |
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| Coho |
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Cwt |
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| Date |
Redds |
Live |
Dead |
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Sampled |
recoveries |
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Comments |
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| 26-Oct |
3 |
3 |
3 |
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3 |
0 |
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Below hamilton creek in isolated pools |
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| 29-Oct |
0 |
0 |
5 |
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5 |
0 |
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| 2-Nov |
4 |
14 |
8 |
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8 |
1 |
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| 5-Nov |
15 |
21 |
19 |
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19 |
0 |
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8 redds in channel break, 7 redds below Hamilton
creek |
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| 9-Nov |
11 |
47 (2jk) |
18 |
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18 |
3 |
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3 new redds in channel break, 5 below hamilton |
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| 12-Nov |
13 |
18 |
24 |
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24 |
1 |
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4 new redds below Hamilton creek |
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| 16-Nov |
0 |
11(1jk) |
19 |
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19 |
2 |
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| 19-Nov |
2 |
8 |
10 |
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10 |
1 |
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spawning at mouth of Hamilton creek |
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| 26-Nov |
0 |
0 |
25 |
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25 |
0 |
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| 30-Nov |
0 |
0 |
3 |
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3 |
0 |
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| 3-Dec |
0 |
0 |
5 |
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5 |
0 |
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| 6-Dec |
0 |
0 |
3 |
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3 |
0 |
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| 10-Dec |
0 |
0 |
7 |
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7 |
1 |
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| 13-Dec |
0 |
0 |
9 |
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9 |
0 |
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| 17-Dec |
0 |
0 |
3 |
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3 |
0 |
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