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: May 21 2022 07:55:03.
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  85765246056586114533357785210788210964233926    
2022-05-202463.0648453541148325712 3     
2022-05-192459.81246509141227851132724 112    
2022-05-182461.51935498591249165121322612 3     
2022-05-172463.71308440604411496369456 4     
2022-05-162467.06352519617547 662681 2     
2022-05-152464.88203645679691111131571 5     
2022-05-142464.4108388812702891431615898087 21    
2022-05-132464.288692511263704730352562810 71    
2022-05-122464.71192889800509691620373266 4     
2022-05-112465.1162111421132591104551312428 7     
2022-05-102465.71842172810537971541011563 41    
2022-05-092461.7127125799692724113194     3    
2022-05-082450.92351277530131137299105  1 63    
2022-05-072452.85807421654531711529239  1 25     
2022-05-062468.06027641278123431133  1114     
2022-05-052466.65506406288519826311    41    
2022-05-042464.429181881260672124    16     
2022-05-032463.7483641424521242243    13     
2022-05-022463.436202701877932091    10     
2022-05-012467.05735224114610387     7     
2022-04-302463.15837234165490144     4     
2022-04-292463.2615934819731291143    141    
2022-04-282466.151593092379217651    14     
2022-04-272459.330875303507208282    14     
2022-04-262464.6233122216692087   1 4     
2022-04-252461.92498256322834691    31    
2022-04-242461.7151214111682715     8     
2022-04-232465.080414357763481     9     
2022-04-222471.6573822020318      4     
2022-04-212474.06046412421171     1     
2022-04-202462.832311845688            
2022-04-192471.0332114779752     2     
2022-04-182460.042219975676      2     
2022-04-172460.924789111148      3     
2022-04-162461.8284147514481     2     
2022-04-152461.024510461840      4     
2022-04-142461.5390118930331     4     
2022-04-132461.22354534129      1     
2022-04-122460.429417052743      101    
2022-04-112460.41498421845      1     
2022-04-102463.51919750468      31    
2022-04-092464.31125035456      2     
2022-04-082469.71002840929      2     
2022-04-072469.51213420518      4     
2022-04-062470.9983220736      6     
2022-04-052472.4723555845      51    
2022-04-042472.61432234969      4     
2022-04-032472.41361149978      11     
2022-04-0210.0921712301            
2022-04-0100.0 319 325       1    
2022-03-3100.0 97 304       1    
2022-03-3000.0 91 140            
2022-03-2900.0 61 66       2    
2022-03-2852.9407717      2     
2022-03-2743.24431 2     131    
2022-03-2600.0 21 2            
2022-03-2500.0 8 1       1    
2022-03-2464.216        21    
2022-03-2300.0 9         1    
2022-03-2244.3 9 1      4     
2022-03-2100.0 12 3            
2022-03-2032.311        1     
2022-03-1900.0 3              
2022-03-1800.0 1              
2022-03-1785.819203        6     
2022-03-1600.0 5              
2022-03-1542.211        11    
2022-03-1400.0 7 1            
2022-03-1365.43 1             
2022-03-1064.8  1       3     
2022-03-0865.0  1       6     
2022-03-0654.4          13     
2022-03-0363.11 1             
2022-03-0156.5          10     

Note: On March 17, 2022, Clearwater Hatchery spring Chinook were tagged at Lower Granite (5549 fish) and released directly into the spillway for research. The PTAGIS session message: FISH USED FOR PRE-SEASON EVALUATION OF GRS PIT DETECTION EFFICIENCY.

Lower Granite Bypass and Spillway Juvenile Downstream Detections Summary by Species

Last Update: May 21 2022 07:55:31.
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 Total85765314727682846166133492246037565435510962235
2022-05-20648468441831108453 14210425
2022-05-19124662181101644191509175347830
2022-05-181935123204111649249498365744623
2022-05-17130815920961150312440478277510
2022-05-166359310171987330251245944613
2022-05-1582097136516684993643565 218
2022-05-14108319172191059439888662461511
2022-05-13886268979134635092512536 2 12
2022-05-1211921261048273240088972222 120
2022-05-111621731051765423571142351713 24
2022-05-101842841903964113317282710  515
2022-05-0912711773021846276325792812  611
2022-05-0823512354374050920277516831 8
2022-05-07580743024640412164216131213 6
2022-05-0660271321374149211641532424
2022-05-0555065415133564406211232
2022-05-04291861116124218612 633
2022-05-034836851625414145414 2
2022-05-0236204692131127074 6 1
2022-05-0157353243121 2244 211 
2022-04-30583749716  234731311
2022-04-2961591233244  3481114 2 1
2022-04-285159659 6 2309162141 
2022-04-2730871091913 1530317 4  
2022-04-262331441 31 22220113 1
2022-04-252498281 3  25613  3 1
2022-04-241512163 2  141321112
2022-04-2380414  21 1439  5  
2022-04-22573161    8271 3  
2022-04-21604 3 11164 2 32 
2022-04-20323 6 3 1118 112  
2022-04-19332 21   114 4    
2022-04-18422 23   199 121  
2022-04-17247521   892111  
2022-04-162849112 114761 1 1
2022-04-152454     104511   
2022-04-1439042    118121   
2022-04-13235  11  455     
2022-04-122943     1702 1   
2022-04-111493 11  8452    
2022-04-10191   12 9731 1  
2022-04-091121  31 502  11 
2022-04-08100   1  283 1   
2022-04-071212  31 34   1  
2022-04-0698  11  321  1  
2022-04-0572      351  1  
2022-04-04143    1 221     
2022-04-031361     112  1  
2022-04-02953    217322   
2022-04-01 443   319731   
2022-03-31 432   9732    
2022-03-30 82    9163    
2022-03-29 132    6151    
2022-03-2840102    7751    
2022-03-274481    312     
2022-03-26 8     212     
2022-03-25 11     82     
2022-03-2413     6      
2022-03-23 3     9      
2022-03-22       9      
2022-03-21       12      
2022-03-201      1      
2022-03-19       3      
2022-03-18       1      
2022-03-171920      3      
2022-03-16       5      
2022-03-151      1      
2022-03-14       7      
2022-03-133             
2022-03-10              
2022-03-08              
2022-03-031             
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 Total658614527263379370949445911453360029010412851294
2022-05-20541285313166731484611 19
2022-05-19141238131101271522784521122
2022-05-18591422111361920324962322219
2022-05-17604861687634203411103541616
2022-05-1696171661054938475102252223
2022-05-155671047911102256796203631219
2022-05-141270171602693342428935227327
2022-05-13112624450221341370370661312111
2022-05-1280093115291341725509611163117
2022-05-11113227159353942383591351031214
2022-05-101053681891949432247971215 5313
2022-05-099691182443341503272724131422 15
2022-05-083013336321511917186113710822312
2022-05-075453352181643319931711555218
2022-05-062781886756321880234353323
2022-05-05288511266345713411986414  
2022-05-04126022891274371567542611
2022-05-0324522105945298241245123 2
2022-05-021877185384234 17931324211
2022-05-0111462205118226101031332422
2022-04-3016541884031206119011722 2
2022-04-29197316621152811112912 1251
2022-04-282379407267273 2172031111
2022-04-2735073042561621620834  514
2022-04-261669197592911320818 1733
2022-04-25322874811242734643 2 2
2022-04-241168782511142711221 16
2022-04-235776438127 163487 1316
2022-04-2220205413168 53186 1224
2022-04-21124216128522117 1 728
2022-04-2045667910 28811 416
2022-04-197794101111 17511 116
2022-04-18756872311 276153617
2022-04-171111108154  485 43 10
2022-04-165144612155  488 25 1
2022-04-1561838765  405452 3
2022-04-1493012612   331 64  
2022-04-133411029   293 32  
2022-04-12527933   432 21  
2022-04-112181232   451571  
2022-04-10504562   682222  
2022-04-0935421    561 112  
2022-04-0840931    291112  
2022-04-072051     182122  
2022-04-062078     3642    
2022-04-055583     457     
2022-04-04349      6951    
2022-04-03499      7814     
2022-04-0212  1   3015041   
2022-04-01  1    325192    
2022-03-31       3043     
2022-03-30 1   1 14011    
2022-03-29       661     
2022-03-281      7      
2022-03-27       2      
2022-03-26 1     21     
2022-03-25       1      
2022-03-24              
2022-03-23        1     
2022-03-22       1      
2022-03-21       3      
2022-03-20              
2022-03-19              
2022-03-18              
2022-03-17              
2022-03-16              
2022-03-15              
2022-03-14       1      
2022-03-131             
2022-03-101             
2022-03-081             
2022-03-031             
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 Total35778045312626385264 2 10
2022-05-203211 2 105   1 4
2022-05-1951251 13613     2
2022-05-181653411 21121    1
2022-05-174923  2246     3
2022-05-164732   33  1    
2022-05-159134  1391 1    
2022-05-1414352  15016 1 1  
2022-05-134741   17302     
2022-05-126953 1 13163     
2022-05-111042214 1655      
2022-05-1015462 111101      
2022-05-0911368 1 3194      
2022-05-08299126    105 1    
2022-05-07529102    239      
2022-05-063116  2  33      
2022-05-052632     11      
2022-05-042121     4      
2022-05-032244     3      
2022-05-022092     1      
2022-05-0187             
2022-04-30144             
2022-04-29114      3      
2022-04-28651     1      
2022-04-2728      2      
2022-04-267             
2022-04-259      1      
2022-04-245             
2022-04-231             
2022-04-22              
2022-04-211             
2022-04-20              
2022-04-192             
2022-04-18              
2022-04-17              
2022-04-161             
2022-04-15              
2022-04-141             
2022-04-13              
2022-04-12              
2022-04-11              
2022-04-10              
2022-04-09              
2022-04-08              
2022-04-07              
2022-04-06              
2022-04-05              
2022-04-04              
2022-04-03              
2022-04-02              
2022-04-01              
2022-03-31              
2022-03-30              
2022-03-29              
2022-03-28              
2022-03-27              
2022-03-26              
2022-03-25              
2022-03-24              
2022-03-23              
2022-03-22              
2022-03-21              
2022-03-20              
2022-03-19              
2022-03-18              
2022-03-17              
2022-03-16              
2022-03-15              
2022-03-14              
2022-03-13              
2022-03-10              
2022-03-08              
2022-03-03              
Juvenile Sockeye
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 Total107881632411117 521091218    
2022-05-207324313 41 2    
2022-05-1927146563 1218    
2022-05-18132349621  2636    
2022-05-173695637    4572    
2022-05-166622915    681     
2022-05-151113172    157      
2022-05-14158962    808      
2022-05-1335253     628      
2022-05-1220371     326      
2022-05-111312      42      
2022-05-1015      6      
2022-05-09              
2022-05-08              
2022-05-07              
2022-05-06              
2022-05-05              
2022-05-04              
2022-05-03              
2022-05-02              
2022-05-01              
2022-04-30              
2022-04-29              
2022-04-28              
2022-04-27              
2022-04-26              
2022-04-25              
2022-04-24              
2022-04-23              
2022-04-22              
2022-04-21              
2022-04-20              
2022-04-19              
2022-04-18              
2022-04-17              
2022-04-16              
2022-04-15              
2022-04-14              
2022-04-13              
2022-04-12              
2022-04-11              
2022-04-10              
2022-04-09              
2022-04-08              
2022-04-07              
2022-04-06              
2022-04-05              
2022-04-04              
2022-04-03              
2022-04-02              
2022-04-01              
2022-03-31              
2022-03-30              
2022-03-29              
2022-03-28              
2022-03-27              
2022-03-26              
2022-03-25              
2022-03-24              
2022-03-23              
2022-03-22              
2022-03-21              
2022-03-20              
2022-03-19              
2022-03-18              
2022-03-17              
2022-03-16              
2022-03-15              
2022-03-14              
2022-03-13              
2022-03-10              
2022-03-08              
2022-03-03              

Note: On March 17, 2022, Clearwater Hatchery spring Chinook were tagged at Lower Granite (5549 fish) and released directly into the spillway for research. The PTAGIS session message: FISH USED FOR PRE-SEASON EVALUATION OF GRS PIT DETECTION EFFICIENCY.

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.