Lower Granite Bypass and Spillway Analyses

15-June-2022. Updates implemented to DART's acquisition of Columbia Basin hydrology time-series data for improved timestamping and outlier handling.more ]

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 28 2022 13:44:17.
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  10229534865727011804740639501081521121601347981    
2022-06-272421.31421297    1 3     
2022-06-262441.122291971   2 2     
2022-06-252439.630331712    2 11    
2022-06-242422.312161815     2 2    
2022-06-232422.912233215    21      
2022-06-222418.4474618241   2  1    
2022-06-212418.268731017    311     
2022-06-202459.813262217    1  2    
2022-06-192455.722286171521  3 12    
2022-06-182460.7179481412      42    
2022-06-172442.554461830    4 41    
2022-06-162441.664921443 2  3 41    
2022-06-152444.010318918241   1121    
2022-06-141947.3131291144921   14     
2022-06-132447.6246381418743  3125    
2022-06-122440.64893603213912  2122    
2022-06-112439.16003054885211 1 31    
2022-06-102437.235322320273   10 1     
2022-06-092438.8224138243932  2 4     
2022-06-082447.8210188457012  7153    
2022-06-072436.34106422613644 1  11    
2022-06-062437.1308351107172126  2 34    
2022-06-052438.15155001002098111 3 52    
2022-06-042439.482152512293152  1 42    
2022-06-032443.1594470448473  4 41    
2022-06-022445.436929655130124  3 44    
2022-06-012444.330629976230112  3144    
2022-05-312443.02674331682271410  5 33    
2022-05-302457.15446813263201515  4 83    
2022-05-292443.31057924763364285  1 112    
2022-05-282447.419478188881568441 1 81    
2022-05-272457.681430928156466 11 43    
2022-05-262461.7691230476494122 2 8     
2022-05-252460.51308273574754415 4 7     
2022-05-242460.7931116642994416 1151    
2022-05-232460.063518246683271215 8     
2022-05-222462.38633315161392533 3 6     
2022-05-212460.69272246841322746 4 4     
2022-05-202459.4659459547152335712 3     
2022-05-192458.01246509141828051132724 112    
2022-05-182461.51935498595256165121322612 3     
2022-05-172463.91308440606412496369456 4     
2022-05-162466.76352519627547 662681 2     
2022-05-152464.78203645689791111131571 5     
2022-05-142464.5108388812732891431615898087 21    
2022-05-132464.388692511273704730352562810 71    
2022-05-122464.71192889802510691620373266 4     
2022-05-112465.4162111421134597104551312428 7     
2022-05-102465.91842172810548001541011563 41    
2022-05-092460.8127125799712726113194     3    
2022-05-082450.82351277530261141299105  1 63    
2022-05-072453.25807421654551712529239  1 25     
2022-05-062467.76027641278223531133  1114     
2022-05-052466.45506406288619826311    41    
2022-05-042464.329181881260672124    16     
2022-05-032463.6483641424521242243    13     
2022-05-022463.336202701877942091    10     
2022-05-012467.05735224114710387     7     
2022-04-302463.15837234165490144     4     
2022-04-292463.2615934819731301143    141    
2022-04-282466.051593092379217651    14     
2022-04-272459.430875303507208282    14     
2022-04-262464.3233122216692087   1 4     
2022-04-252461.72498256322834691    31    
2022-04-242461.9151214111682715     8     
2022-04-232465.280414357763481     9     
2022-04-222471.4573822020318      4     
2022-04-212473.96046412421171     1     
2022-04-202462.832311845688            
2022-04-192470.9332114779752     2     
2022-04-182460.042219975776      2     
2022-04-172461.024789111148      3     
2022-04-162461.8284147514481     2     
2022-04-152463.824510461840      4     
2022-04-142461.5390118931331     4     
2022-04-132461.22354534230      1     
2022-04-122460.529417052743      101    
2022-04-112460.71498421845      1     
2022-04-102463.51919750568      31    
2022-04-092464.21125035556      2     
2022-04-082469.61002840929      2     
2022-04-072469.61213420618      4     
2022-04-062471.1983220836      6     
2022-04-052472.4723555945      51    
2022-04-042472.61432234969      4     
2022-04-032468.31361149978      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             
2022-03-1064.9  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: June 28 2022 13:44:58.
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 Total102295510242759121363149850983486316281161282467427752
2022-06-27145222622151 314
2022-06-2622 3265229211375
2022-06-25304721151033532558
2022-06-241258526916463447
2022-06-231276436923342559
2022-06-22473675182146465468
2022-06-2168141681113207311162141616
2022-06-20132125 1829196285 112015
2022-06-19222208422351186176313225
2022-06-1817949834271048811430216
2022-06-175492917292534627351325153
2022-06-166437493340810924048111663
2022-06-15103109726549299189113463033194
2022-06-141318263213430132916326519163
2022-06-1324644431531281338120221821105
2022-06-124893847315623153602028262394
2022-06-11600354228361773052448151544
2022-06-10353628232371810223504311964
2022-06-09224806218291414138421671076
2022-06-082106535321721291884618111277
2022-06-074106592371233306423125103116
2022-06-063081858921142944351463211759
2022-06-055151145930102848500402696410
2022-06-048219339188233752533234335
2022-06-035946321128245847045112243
2022-06-023694522231530482961644546
2022-06-0130645303712153629919116 48
2022-05-31267924929525424332992198
2022-05-3054422689142276068130211 36
2022-05-291057119831943194924255211017
2022-05-28194712451107306381818411423
2022-05-278144930291810430953 3526
2022-05-266911217214149323055 1732
2022-05-251308626622201222732711632
2022-05-2493117244274113411618281362
2022-05-2363554910163311918239 31455
2022-05-2286316486324894331762183637
2022-05-219274091105052140224420 171745
2022-05-20659508882632112459114313426
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 Total72701518934301063871775596518047838481159169133543
2022-06-27291 5 117331311
2022-06-261936412 7  1 1 
2022-06-2517321  112121  1
2022-06-24186 11  1531  11
2022-06-2332351 1 15 211  
2022-06-2218342 2 24131   
2022-06-2110251   1732  4 
2022-06-20214  11171   9 
2022-06-19175  25 151   11
2022-06-18143  23 1212 171
2022-06-171862 3113041146 
2022-06-161464 1334347122 
2022-06-1518391223247238 2 
2022-06-1414118237 4936172121
2022-06-134157 242871061111
2022-06-12326122745139742621
2022-06-11481511338546 533
2022-06-10205142514627711225 
2022-06-0924910239439551 14
2022-06-08452199 57702441424
2022-06-072691863281366157124
2022-06-0610713271151817211122137
2022-06-051001211521454209854229
2022-06-04122812317299346221 
2022-06-0344181283821841941 12
2022-06-025522241111544130942 11
2022-06-0176273336412412301095 19
2022-05-311687710722 526227228   3
2022-05-303261018612 932320821 12
2022-05-2976354704921043364222  7
2022-05-28888627233 8571563 2 27
2022-05-2728128285110895623 1314
2022-05-2647617121389614912   11
2022-05-25574181754812375    310
2022-05-24642152464152829931  541
2022-05-2346614361213322183142 227
2022-05-225161037482910513926 1336
2022-05-21684446236512761324912238
2022-05-20547305515349781524612 21
2022-05-19141838132101371542805521122
2022-05-18595422111361920325662322219
2022-05-17606861687634203412103541616
2022-05-1696271671054938475102252223
2022-05-155681058011102256797203631219
2022-05-141273171602693342428935227327
2022-05-13112724451221341370370661312111
2022-05-1280295116291341725510611163117
2022-05-11113427159353942383597351031214
2022-05-101054691891949432248001215 5313
2022-05-099711182443341503272726131422 15
2022-05-083026336321511917186114110822312
2022-05-075455352181643319931712555218
2022-05-062782886756321880235353323
2022-05-05288611266345713411986414  
2022-05-04126022891274371567542611
2022-05-0324522105945298241245123 2
2022-05-021877185384234 17941324211
2022-05-0111472205118226101031332422
2022-04-3016541884031206119011722 2
2022-04-29197316621152811113012 1251
2022-04-282379407267273 2172031111
2022-04-2735073042561621620834  514
2022-04-261669197592911320818 1733
2022-04-25322874811242734643 2 2
2022-04-241168782511142711221 16
2022-04-235776438128 163487 1316
2022-04-2220205413168 53186 1224
2022-04-21124216128522117 1 728
2022-04-2045667910 28811 416
2022-04-197794101111 17511 116
2022-04-18757872311 276153617
2022-04-171111108154  485 43 10
2022-04-165144612155  488 25 1
2022-04-1561839765  405452 3
2022-04-1493112612   331 64  
2022-04-133421029   303 32  
2022-04-12527933   432 21  
2022-04-112181232   451571  
2022-04-10505562   682222  
2022-04-0935521    561 112  
2022-04-0840931    291112  
2022-04-072061     182122  
2022-04-062088     3642    
2022-04-055593     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 Total4063107687211839495096 2218
2022-06-27              
2022-06-261             
2022-06-25              
2022-06-24              
2022-06-23              
2022-06-221    1        
2022-06-21              
2022-06-20              
2022-06-192      1      
2022-06-18     1        
2022-06-17 1            
2022-06-16       2 1    
2022-06-15112      1    
2022-06-142 1    12     
2022-06-134      3      
2022-06-121 1 1 12      
2022-06-112 1  1 1      
2022-06-103 11          
2022-06-09312   12      
2022-06-0811   122      
2022-06-074 1   14      
2022-06-06123    761     
2022-06-058     211      
2022-06-04151 1  42      
2022-06-0371   163      
2022-06-02122    74      
2022-06-0111  11242     1
2022-05-3114 1    10      
2022-05-301517  2215      
2022-05-292851   75      
2022-05-2884311  114      
2022-05-27463    146      
2022-05-2641    242      
2022-05-2544     111      
2022-05-2444 1 1 151    11
2022-05-2327 1 1 131     2
2022-05-2225   11123    1 
2022-05-212712 4 74     4
2022-05-203341 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 Total10815168274171704963821121219110 33
2022-06-27              
2022-06-26     1        
2022-06-25              
2022-06-24              
2022-06-23              
2022-06-22              
2022-06-21              
2022-06-20              
2022-06-19              
2022-06-18      1       
2022-06-17              
2022-06-16              
2022-06-15              
2022-06-14              
2022-06-13     1        
2022-06-12  1           
2022-06-111   1         
2022-06-10      1       
2022-06-09     1        
2022-06-08              
2022-06-07   1   1      
2022-06-06              
2022-06-051             
2022-06-04    1         
2022-06-03   1  1       
2022-06-02    11        
2022-06-01      2       
2022-05-31  1 222       
2022-05-30    112    1  
2022-05-29  11635    1 2
2022-05-281 1 143      1
2022-05-27    93131   1 2
2022-05-262 2 11341    2 1
2022-05-255 1 20270    1 3
2022-05-246 61209176  1   18
2022-05-232 811411641  11 4
2022-05-223 3 2210114    2 2
2022-05-21658139638    1  
2022-05-207325318141 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.