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: June 05 2020 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  7113819329639981123924064281037194610 36897    
2020-06-042449.91064036176      3    
2020-06-032446.17560924861 22 22    
2020-06-022451.12772021367173    4     
2020-06-012445.58752632191202621   31    
2020-05-314848.277827261415235742  92    
2020-05-302447.077137610192111    63    
2020-05-292448.4260861927072 2  114    
2020-05-282453.6172511224311     3     
2020-05-272455.0123561001781  1 2     
2020-05-262461.716210111041112    53    
2020-05-252458.224318665742633 3 2     
2020-05-242457.12531558181281231  53    
2020-05-232448.9259454309449373624  35    
2020-05-222458.93174727074753025122 22    
2020-05-212451.4231501512259301813  55    
2020-05-202457.28225074842934125103  32    
2020-05-192462.74982824331042412199  6     
2020-05-182465.96832583601453166513  31    
2020-05-172465.86792112741762789831  61    
2020-05-162466.36523434804739717455  3     
2020-05-152463.69508487161195815532130  3     
2020-05-142457.62182133374031066212636260  22    
2020-05-132456.9379411482321181192276545407  103    
2020-05-122461.9388970014891501601326920  122    
2020-05-112461.824313559549812035   23    
2020-05-102464.31473135851797151   6     
2020-05-092464.514591296248256 1   62    
2020-05-082466.5153417553911796411  22    
2020-05-072465.410096169602351245 1  6     
2020-05-062464.38772781561246345    5     
2020-05-052464.91042422640183685  1 62    
2020-05-042459.414331018942489689    13     
2020-05-032458.579962813179171910    4     
2020-05-022454.3253178611784208617    72    
2020-05-012453.3221570917094828518    16     
2020-04-302462.5186646727242467518    10     
2020-04-292465.0161124316072238221    81    
2020-04-282464.7107265411112816916  1 41    
2020-04-272464.526455171788330697    9     
2020-04-262465.6214422051103021435    10     
2020-04-252466.82127209174216110520    51    
2020-04-242463.625651961612172687    9     
2020-04-232464.02062216135110215     6     
2020-04-222464.01166347760147101    21    
2020-04-212462.399815781713917     5     
2020-04-202465.11328108309022541    5     
2020-04-192463.38781535084210      51    
2020-04-182462.3746129293619321    3     
2020-04-172461.57749916222271     5     
2020-04-162462.75901071234104      72    
2020-04-152463.67818523441471     21    
2020-04-142464.310821788231771     5     
2020-04-132462.98012041427111      5     
2020-04-122463.010036335650      72    
2020-04-112463.97075724044      5     
2020-04-102463.621202834335      7     
2020-04-092462.432682844835      5     
2020-04-082463.89133530039      31    
2020-04-072460.66593160260      1     
2020-04-062460.06497154435      5     
2020-04-052461.52831980162      6     
2020-04-042460.92513040185      11     
2020-04-032462.61816980476 1    21     
2020-04-0200.0141169155 1    11    
2020-04-0100.0 114 73       1    
2020-03-3100.0 82 50 1          
2020-03-3000.0 59 42       3    
2020-03-2900.0 17 10       1    
2020-03-2800.0 10 4       2    
2020-03-2700.0 8 1       1    
2020-03-2600.0 1              
2020-03-2500.0 4              
2020-03-2400.0 2 1       1    
2020-03-2300.0 3              
2020-03-2200.0 11         1    
2020-03-2100.0 8         2    
2020-03-2000.0 2         3    
2020-03-1900.0           2    
2020-03-1700.0 1         1    
2020-03-1600.0 2              
2020-03-1500.0           2    
2020-03-1300.0           2    
2020-03-1200.0           1    
2020-03-1100.0           1    
2020-03-0900.0           1    
2020-03-0800.0           1    
2020-03-0700.0           2    
2020-03-0200.0           1    
2020-03-0100.0   1            
2020-02-2700.0   1            
2020-02-2600.0 3         1    
2020-02-2500.0 2              
2020-02-2400.0 2 1            
2020-02-2300.0 1              
2020-02-2100.0 2              
2020-02-2000.0 3              
2020-02-1200.0          1     
2020-01-2875.1          5     
2020-01-2697.7          2     

Note: In this first year of detections at the Lower Granite Spillway (GRS) antennas, information and understanding of the detections are developing in real-time. During a non-spill period on 12 February 2020, an adult steelhead was detected in the tailrace by the lower antennas of the system over a period of 50 minutes. DART is actively investigating methods to identify these adult tailrace detections as a separate activity from fish detected passing from forebay to tailrace through the spillway. Currently, these detections are included in the daily fish counts presented in the table.

Lower Granite Bypass and Spillway Juvenile Downstream Detections Summary by Species

Last Update: June 05 2020 07:45:23.
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 Total7113832041543123125302983573219329596285199333424671
2020-06-04106256511540403112214
2020-06-03755610812916601141358
2020-06-022775232191771820214101359
2020-06-0187557146592626323421112
2020-05-317787118813184327213921046
2020-05-30771245151426343764312869
2020-05-29260196111324388654612 16
2020-05-2817219327162956511038479
2020-05-2712317919212961565565615
2020-05-26162191517233246101151126514
2020-05-2524334912757421861212287
2020-05-2425321125186862155141342312
2020-05-23259552812176699454177321317
2020-05-223176780118851594721415731319
2020-05-21231938416311881965012515733316
2020-05-208229863196128618250719175122512
2020-05-194981442224492151532823841121912
2020-05-186838744541071221622582411941318
2020-05-176796387361241261532111910361220
2020-05-1665212410646571441203431914222420
2020-05-15950207432161120140848313281814
2020-05-1421821385413571161161333143 9287
2020-05-13379414647848123931148852122211
2020-05-123889704725611097870056491311
2020-05-112431874530100662023558108151116
2020-05-10147339221910265276135123613619
2020-05-09145952211776993301299 515637
2020-05-08153476279731083581751832101030
2020-05-07100968707741033136161511312722
2020-05-068776912231346851127871411433
2020-05-0510426236918692514422178213757
2020-05-041433724516178373901018208218644
2020-05-037993740311366920062846 111124
2020-05-02253179687889581857866739716
2020-05-0122151043880112451007091051111317
2020-04-301866722492149596846784810717
2020-04-2916114925816741632433567113
2020-04-281072363356471321654439546
2020-04-272645643771278235175613 12
2020-04-26214437315021111422069104 5
2020-04-252127475520143162098112211
2020-04-24256542313621831964546 3
2020-04-2320624112271858216622412
2020-04-2211664691613523474161 3
2020-04-21998676615 21574 12 5
2020-04-201328344241 10811 12 
2020-04-198784521105 15362 331
2020-04-18746472351 1293 2   
2020-04-1777414 74  992 1   
2020-04-16590201    10722  1 
2020-04-1578123 24  857 21  
2020-04-1410821812   1782 15  
2020-04-1380116 3   204413   
2020-04-121003161    633     
2020-04-1170751    574     
2020-04-10212010     2851    
2020-04-0932683     285     
2020-04-089131     351  1  
2020-04-07659      3111    
2020-04-06649      712     
2020-04-05283      191     
2020-04-04251      30      
2020-04-03181      69      
2020-04-0214      1161111  
2020-04-01       1142 1   
2020-03-31       82      
2020-03-30       5911    
2020-03-29       1711    
2020-03-28       101     
2020-03-27       8      
2020-03-26       1      
2020-03-25       41     
2020-03-24       2      
2020-03-23       3      
2020-03-22       11      
2020-03-21       8      
2020-03-20       2      
2020-03-17       1      
2020-03-16       2      
2020-03-01              
2020-02-27              
2020-02-26       3      
2020-02-25       2      
2020-02-24       2      
2020-02-23       1      
2020-02-21       2      
2020-02-20       3      
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 Total639985056172912279232427994511216454166143119253762
2020-06-043620 728111711   3
2020-06-03927418 161148311121
2020-06-02136322912741371912157
2020-06-012192620111710120431157
2020-05-31614141053124115211 11928
2020-05-301011610125275292122147
2020-05-2919215361244070 292411
2020-05-281228810733414334102814
2020-05-271007162743137175511165
2020-05-261101514121327794110744311
2020-05-2565243315460357410231103
2020-05-24814319153655681743 35
2020-05-233094529164591214491322279
2020-05-227076544112631424751031187
2020-05-21512722910484114259121  49
2020-05-2048467211969116429385 143
2020-05-19433504139651221045 3 35
2020-05-183603127512061119145225238
2020-05-1727432298030511581764132418
2020-05-16480293682236414247222 717
2020-05-15716111374417501101191 11410
2020-05-147401304814234210931024 2311
2020-05-13232178334112611218142 1518
2020-05-12148919281524291161501521316
2020-05-119544928453638327983452529
2020-05-108513624203047393792253417
2020-05-0962441131618100530822353915
2020-05-085396348618953601172522722
2020-05-079606264528101372235101012510
2020-05-06156172232016103109024611 111248
2020-05-0564042442932987211839212638
2020-05-0494291633630743864898252419
2020-05-03131755634422765339175122731
2020-05-02117816476452011673842087221666
2020-05-0117093148737228058348261111444
2020-04-302724145512428107560246124 41246
2020-04-29160719846293718047322383232030
2020-04-281111165643236422362815612429
2020-04-27178875753145561943303625510
2020-04-26511013011131322198302443439
2020-04-251742127126623169116191362 9
2020-04-2416122616383411387172235141 10
2020-04-23135136224213321531021834626
2020-04-22760457171537838147322 524
2020-04-218171381771695713918 34 10
2020-04-203090661412117392237 1318
2020-04-1950841514616112219115 1339
2020-04-1829361251779103191114  15
2020-04-171622129915964227171 345
2020-04-16123453107133210451121 
2020-04-1523448511312  147121262 
2020-04-1482398176  1776114  
2020-04-1314271134511  11110  4  
2020-04-1235635744  505142  
2020-04-1124056231  443  4  
2020-04-103434511   354111  
2020-04-09448341    353  1  
2020-04-0830035     3961    
2020-04-0760218     604     
2020-04-065447     3511    
2020-04-058013     626     
2020-04-04401      854     
2020-04-03804      762     
2020-04-029      1553     
2020-04-01       731     
2020-03-31       50      
2020-03-30       42 1    
2020-03-29       101 1   
2020-03-28       4      
2020-03-27       1      
2020-03-26              
2020-03-25              
2020-03-24       1 1    
2020-03-23              
2020-03-22              
2020-03-21              
2020-03-20              
2020-03-17        1     
2020-03-16        1     
2020-03-01       1      
2020-02-27       1      
2020-02-26              
2020-02-25              
2020-02-24       1      
2020-02-23              
2020-02-21              
2020-02-20              
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 Total240695364085962624287173512
2020-06-046     3       
2020-06-036   1 21      
2020-06-0272 11123      
2020-06-0126   1422     4
2020-05-3135 1 1 77      
2020-05-3011 14 351     2
2020-05-297  31 521 1 1 
2020-05-2811  3 23       
2020-05-2783 22 11  31  
2020-05-26111111232  1 1 
2020-05-2526 211133      
2020-05-242841 13512      
2020-05-233721  1336      
2020-05-223051  69251     
2020-05-2130 1319518      
2020-05-2041223446252    1
2020-05-19244  286121    1
2020-05-1831 1 24176      
2020-05-1727 2 6568      
2020-05-16391352477      
2020-05-15586131101015      
2020-05-146634 22 21    1 
2020-05-13192102 2 527      
2020-05-1216021144613    2 
2020-05-1112031362153     2
2020-05-10716 132165      
2020-05-09563111411       
2020-05-08965  3184 1    
2020-05-07124   2455      
2020-05-0634   53395   2  
2020-05-0568  173285      
2020-05-046861 4299  1   
2020-05-0319 2 52610      
2020-05-02864213 217     2
2020-05-0185112 3 118      
2020-04-30754 15 1181     
2020-04-298221 2  21      
2020-04-28691     16      
2020-04-27693 2   7      
2020-04-261432     5      
2020-04-25105      20      
2020-04-2468 1    7      
2020-04-2315             
2020-04-2210      1      
2020-04-2117             
2020-04-204      1      
2020-04-19              
2020-04-182      1      
2020-04-171         1   
2020-04-16              
2020-04-151             
2020-04-141             
2020-04-13              
2020-04-12              
2020-04-11              
2020-04-10        1     
2020-04-09              
2020-04-08              
2020-04-07              
2020-04-06              
2020-04-05              
2020-04-04              
2020-04-03       1      
2020-04-02       1      
2020-04-01              
2020-03-31       1      
2020-03-30              
2020-03-29              
2020-03-28              
2020-03-27              
2020-03-26              
2020-03-25              
2020-03-24              
2020-03-23              
2020-03-22              
2020-03-21              
2020-03-20              
2020-03-17              
2020-03-16              
2020-03-01              
2020-02-27              
2020-02-26              
2020-02-25              
2020-02-24              
2020-02-23              
2020-02-21              
2020-02-20              
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 Total1037111474461571947019469643324
2020-06-04    1 1      1
2020-06-03      12  1   
2020-06-02    1        1
2020-06-011     1 1     
2020-05-314   1  2     1
2020-05-30    111       
2020-05-29     1 2  2   
2020-05-28    1 3      1
2020-05-27 1  116      1
2020-05-26    7214       
2020-05-253 2 3 12      1
2020-05-243 2  92011  1 4
2020-05-232 5 55524     2
2020-05-221 1117201162 1  11
2020-05-2116862921169321   4
2020-05-201045417412703   115
2020-05-1919144429672993  112
2020-05-186571183025613211   
2020-05-1798121814111 31      
2020-05-16174181293  55 1    
2020-05-15532193    130      
2020-05-142636322    260      
2020-05-13654511    407 1    
2020-05-12269      20 1    
2020-05-115             
2020-05-101             
2020-05-091             
2020-05-081      1      
2020-05-07       1      
2020-05-06              
2020-05-05              
2020-05-04              
2020-05-03              
2020-05-02              
2020-05-01              
2020-04-30              
2020-04-29              
2020-04-28              
2020-04-27              
2020-04-26              
2020-04-25              
2020-04-24              
2020-04-23              
2020-04-22              
2020-04-21              
2020-04-20              
2020-04-19              
2020-04-18              
2020-04-17              
2020-04-16              
2020-04-15              
2020-04-14              
2020-04-13              
2020-04-12              
2020-04-11              
2020-04-10              
2020-04-09              
2020-04-08              
2020-04-07              
2020-04-06              
2020-04-05              
2020-04-04              
2020-04-03              
2020-04-02              
2020-04-01              
2020-03-31              
2020-03-30              
2020-03-29              
2020-03-28              
2020-03-27              
2020-03-26              
2020-03-25              
2020-03-24              
2020-03-23              
2020-03-22              
2020-03-21              
2020-03-20              
2020-03-17              
2020-03-16              
2020-03-01              
2020-02-27              
2020-02-26              
2020-02-25              
2020-02-24              
2020-02-23              
2020-02-21              
2020-02-20              

Note: In this first year of detections at the Lower Granite Spillway (GRS) antennas, information and understanding of the detections are developing in real-time. During a non-spill period on 12 February 2020, an adult steelhead was detected in the tailrace by the lower antennas of the system over a period of 50 minutes. DART is actively investigating methods to identify these adult tailrace detections as a separate activity from fish detected passing from forebay to tailrace through the spillway. Currently, these detections are included in the daily fish counts presented in the table.

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.