Lower Granite Bypass and Spillway Analyses

Data Courtesy of Pacific States Marine Fisheries Commission

Current Reports & Analysis

Data Tables: Juvenile and Adult Daily Summary || Juvenile Downstream Detections Summary by SpeciesChinookSteelheadCohoSockeye --added 16 April 2020

Future Development

We will be developing additional data analysis products for comparison of the Lower Granite Bypass and Spillway PIT Tag detection systems. We welcome your feedback and suggestions for data reporting and analysis.

  • Detail detection reports
  • Data visualizations
  • Survival and Travel Time estimates
  • Adult tailrace detection identification
  • Fallback

Lower Granite Bypass and Spillway Juvenile and Adult Daily Summary

Last Update: April 14 2021 07:45:02.
Date Spill Conditions Juveniles Adults
Spill Hours Spill Percent
(daily avg)
Chinook Steelhead Coho Sockeye Chinook Steelhead Coho Sockeye
Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ)
Date Spill Conditions Juveniles Adults
Spill Hours Spill Percent
(daily avg)
Chinook Steelhead Coho Sockeye Chinook Steelhead Coho Sockeye
Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ) Spillway (GRS)Bypass (GRJ)
YTD Total  195260888961098      8645    
2021-04-132463.219552651138      5     
2021-04-122466.8164511037196      5     
2021-04-112464.4195352447121      12    
2021-04-102466.317537807135      2     
2021-04-092463.922652995164      33    
2021-04-082464.218528146553      2     
2021-04-072464.41772123540      3     
2021-04-062464.81351226947      51    
2021-04-052461.91972646026      42    
2021-04-042462.41612123122      51    
2021-04-032463.51381029312      111    
2021-04-0200.02128 55       6    
2021-04-0100.0 48 34       3    
2021-03-3100.0 32 30            
2021-03-3082.6 737      3     
2021-03-2900.0 7 4            
2021-03-2843.02922      31    
2021-03-2700.0 1 2       2    
2021-03-2600.0 3 2            
2021-03-2553.2   5      12    
2021-03-2400.0           2    
2021-03-2343.1          21    
2021-03-2200.0 2 1       2    
2021-03-2142.3          2     
2021-03-1900.0           2    
2021-03-1852.7 1        31    
2021-03-1662.8           1    
2021-03-1453.2 1 1            
2021-03-1300.0           2    
2021-03-1152.9          11    
2021-03-1000.0           1    
2021-03-0942.6          41    
2021-03-0800.0 1         1    
2021-03-0762.8          22    
2021-03-0452.8          6     
2021-03-0300.0           1    
2021-03-0243.0  1       13     
2021-03-0100.0   1       1    
2021-02-2800.0           2    
2021-02-2700.0 1              
2021-02-2600.0 1              
2021-02-2500.0 9              
2021-02-2400.0 10              
2021-02-2300.0 1              
2021-02-2200.0 1              
2021-02-0810.1                

Lower Granite Bypass and Spillway Juvenile Downstream Detections Summary by Species

Last Update: April 14 2021 07:45:07.
Juvenile Chinook
Date Spillway and then Downstream, Unique TagIDs Detected Bypass and then Downstream, Unique TagIDs Detected
Spillway (GRS) Little Goose Lower Monumental Ice Harbor McNary John Day Bonneville Bypass (GRJ) Little Goose Lower Monumental Ice Harbor McNary John Day Bonneville
YTD Total19537 11  60810221  
2021-04-141             
2021-04-131951     521     
2021-04-121643 1   51      
2021-04-11195      35      
2021-04-10175   1  371 11  
2021-04-092261     521     
2021-04-081851     28      
2021-04-071771     214     
2021-04-06135      12 1    
2021-04-05197      26      
2021-04-04161      21      
2021-04-03138      10      
2021-04-022      1281     
2021-04-01       481 1   
2021-03-31       3211    
2021-03-30       7      
2021-03-29       7      
2021-03-282      9      
2021-03-27       1      
2021-03-26       3      
2021-03-25              
2021-03-22       2      
2021-03-18       1      
2021-03-14       1      
2021-03-08       1      
2021-03-02              
2021-03-01              
2021-02-27       1      
2021-02-26       1      
2021-02-25       9      
2021-02-24       10      
2021-02-23       1      
2021-02-22       1      
Juvenile Steelhead
Date Spillway and then Downstream, Unique TagIDs Detected Bypass and then Downstream, Unique TagIDs Detected
Spillway (GRS) Little Goose Lower Monumental Ice Harbor McNary John Day Bonneville Bypass (GRJ) Little Goose Lower Monumental Ice Harbor McNary John Day Bonneville
YTD Total88973793117101 109861867  
2021-04-141             
2021-04-13651791384  138122 1  
2021-04-12103711212161 196141    
2021-04-1124474815   12121 1  
2021-04-1080730 1   1355 2   
2021-04-099953142   1644 11  
2021-04-081465151    534212  
2021-04-0723524     401 11  
2021-04-0626922     472211  
2021-04-0546015     263     
2021-04-04231      223     
2021-04-032931     123     
2021-04-02       554     
2021-04-01 1     34      
2021-03-31 1     302     
2021-03-303      71     
2021-03-29       4      
2021-03-282      2      
2021-03-27       2      
2021-03-26       2      
2021-03-25       5      
2021-03-22       11     
2021-03-18              
2021-03-14       1      
2021-03-08              
2021-03-021             
2021-03-01       1      
2021-02-27              
2021-02-26              
2021-02-25              
2021-02-24              
2021-02-23              
2021-02-22              

Notes on the DART PIT TAG Dataset

On a daily basis, we upload a daily file from PTAGIS, the primary source, into the Columbia River DART PIT TAG dataset. The Columbia River DART PIT TAG dataset does not include orphan tags (tags that have been detected but are not yet associated with a particular release). On a weekly basis, we synchronize the Columbia River DART PIT TAG dataset with year-to-date data from PTAGIS.

Additional Information:

Please refer to the PIT Tag and ESU Metadata & Glossary for more information.