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 17 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  264573112248169411    10846    
2021-04-162460.3211371904402 1    121    
2021-04-152462.415823847150      4     
2021-04-142462.425611581401     6     
2021-04-132463.220553657138      5     
2021-04-122466.6169511040196      5     
2021-04-112464.4198362449121      12    
2021-04-102466.317538808136      2     
2021-04-092463.923154995164      33    
2021-04-082464.218729146554      2     
2021-04-072464.41842223540      3     
2021-04-062464.81361727147      51    
2021-04-052461.92073046226      42    
2021-04-042462.41752323222      51    
2021-04-032463.51491029513      111    
2021-04-0200.02151 55       6    
2021-04-0100.0 56 34       3    
2021-03-3100.0 35 30            
2021-03-3082.6 737      3     
2021-03-2900.0 7 4            
2021-03-2843.02923      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 11       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 17 2021 07:45:13.
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 Total264515121  73119332  
2021-04-1621111    37211   
2021-04-151584 1   233     
2021-04-142561     11   1  
2021-04-132051     531     
2021-04-121695 1   51      
2021-04-11198      36      
2021-04-10175   1  381 11  
2021-04-092311     544     
2021-04-081871     291     
2021-04-071841     224     
2021-04-06136      17 1    
2021-04-05207      30      
2021-04-04175      23      
2021-04-03149      10      
2021-04-022      1511     
2021-04-01       561 1   
2021-03-31       3511    
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 Total122485728757332 1694791591311
2021-04-161904602513111 40253 51 
2021-04-158477326137  1506211 1
2021-04-14581605135  40722   
2021-04-13657791394  138122 1  
2021-04-12104011212161 196141    
2021-04-1124494815   12121 1  
2021-04-1080830 1   1365 2   
2021-04-099953142   1644 11  
2021-04-081465151    544212  
2021-04-0723524     401 11  
2021-04-0627122     472211  
2021-04-0546215     263     
2021-04-04232      223     
2021-04-032951     133     
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      3      
2021-03-27       2      
2021-03-26       2      
2021-03-25       5      
2021-03-22       11     
2021-03-181             
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              
Juvenile Coho
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 Total1      1      
2021-04-16       1      
2021-04-15              
2021-04-141             
2021-04-13              
2021-04-12              
2021-04-11              
2021-04-10              
2021-04-09              
2021-04-08              
2021-04-07              
2021-04-06              
2021-04-05              
2021-04-04              
2021-04-03              
2021-04-02              
2021-04-01              
2021-03-31              
2021-03-30              
2021-03-29              
2021-03-28              
2021-03-27              
2021-03-26              
2021-03-25              
2021-03-22              
2021-03-18              
2021-03-14              
2021-03-08              
2021-03-02              
2021-03-01              
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.