2000 Spawning Ground Surveys
River Section: Below Bonneville Dam
chum
Date Lives Redds Deads GSI samples Comments
Adults Jacks
                                   
19-Sep chf: 0 0 0 0 0  
                                   
26-Sep chf: 0 0 0 3 0     Carcasses found along bank of main channel: all upriver bright stock    
                  one cwt: Klickitat R. 95            
3-Oct chf: 0 0 0 0 0     River turbidity high.              
                                   
10-Oct chf: 0 0 0 0 0                      
                                   
16-Oct chf: 5 0 3 0 0     Brights spawning in Ives/Pierce channel break.        
                   We assume that no tule chinook showed this year.        
20-Oct chf: 8 0 8 1 0     More activity in channel break and mainstem along side Pierce Is.    
                                   
23-Oct chf: 24 1 25 0 0     Two redds dewatered.  2 starts observed below the mouth of Hamilton Creek.    
                  Most redds are in channel break; 6 marked in main channel along Pierce Is.    
27-Oct chf: 17 2 35 0 0     20 redds in channel break, 15 along Pierce island in the main channel    
                                   
30-Oct chf: 94 10 90 1 0 No spawning below Hamilton Creek.  Channel break: 78 lives, 7 jacks, 66 redds;   
  chum: 0 Main Channel: 15 lives, 3 jacks, 24 redds  
                  5 oversize sturgeon observed in spawning area        
3-Nov chf: 144 6 169 7 0     Brights are now spawning behind Ives Island, just below Hamilton Creek, (5 redds and 17 lives).
  chum: 0 5 new redds observed towards the Washington shore.  
                                   
6-Nov chf: 245 6 166 14 0     18 Live chum, 15 chum redds observed below mouth to Hamilton Creek    
  chum: 18 0 15 0 0  
                                   
8-Nov chf: no count - - - -     Chum observations: spawning all below Hamilton Creek.        
  chum: 24 0 14 0  
                                   
9-Nov chf: 215 10 225 23 0     Brights continue to spawn behind Ives island where substrate has become available.  
  chum: 42 no count 20 more live chum, from yesterday, observed milling around south end of chum spawnig area. 
                  Upwelling evident but flow over substrate is still restricted.        
13-Nov chf: no count             High winds prevented us from making counts of chinook in the mainstem.    
  chum: 52 0 23 2 0 Observations made for chum only.  Spawning continues below Hamilton creek  
   
14-Nov chf: 101* 0* 28* 44* 0     Observations made for chinook only.          
  chum: no count *Live and redd count made behind Ives Island only.  
                                   
17-Nov chf: 181 15 140 83
chum: 147 0 36 1 1
                             
20-Nov chf: 52* 6* 46* 66* Carcasses sampled on November 21.
chum: 140 0 48 27 27 *Live and redd counts made behind Ives Island only.
                             
22-Nov chf: 77 5 200 0
                             
27-Nov chf: 43 0 114 81 3 New chum redds behind Ives island.
chum 56 0 55 29 23
                             
1-Dec chf: 22 - 40 Chum actively spawing below Hamilton creek throughout the channel.  27 new redds marked with GPS
chum 215 0 95 34 17 3 New chum redds observed in the Ives-Pierce channel break.
                                     
4-Dec chf: 12 0 * 18 Chum remain actively spawning; 2 more new chum redds observed in Ives-Pierce channel split
chum 189 0 77 24 *6 new chinook redds.
                                     
8-Dec chf: 3 0 - 24
chum 113 54 - 43 30 6 new chum redds in area downstream from gauge two
                                     
12-Dec chf: 6 0 -
chum 61 0 - 12 0 no new chum redds, spawning continues in over same areas; increased turbidity, siltation, and surface chop prevented total redd counts
                                     
15-Dec chf: 0 0 - 6 High winds and increased turbidity impacted counts. 
chum 10 0 - 0 0 Flows were at the highest observed this season, no new chum redds observed in newly flooded habitat.
                                     
18-Dec chf: 1 0 - 3 Most of live chum look to be new arrivals to the area, ie. They have not been actively spawning.  4 new redds marked with GPS
chum: 47 0 4 12 7