Hatchery Chinook Loss Tables of Confirmed and Unconfirmed CWT and CWT Releases WY2026
Data Courtesy of CDFW, Bay Delta Region
download csv Confirmed Hatchery Loss Mutiple Releases Confirmed Hatchery Loss Unconfirmed Hatchery Loss Hatchery Releases of Interest
Confirmed Hatchery Loss
| Release Start | Release End | CWT Tag Race | Hatchery | Release Site | Release Type | Loss | CWT Number Released |
% CWT Marked of Total Number Released |
% Loss of CWT Number Released |
First Loss | Last Loss | Confirmed Loss CWT Tagcodes | Release Information Source |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-11-13 | 2025-11-13 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 11.248 | 215366 | 100.0 | 0.005 | 2025-12-26 | 2026-02-15 | 056805, 056808, 056809 | CDFW inseason spreadsheet |
| 2025-12-17 | 2025-12-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 774.096 | 468876 | 100.0 | 0.165 | 2025-12-25 | 2026-03-23 | 053700, 056806, 056811, 056812, 056814, 056815, 056817 | CDFW inseason spreadsheet |
| 2025-12-22 | 2025-12-22 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 257.313 | 60873 | 100.0 | 0.423 | 2025-12-30 | 2026-01-22 | 056813 | CDFW inseason spreadsheet |
| 2026-01-08 | 2026-01-08 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 35.065 | 57109 | 100.0 | 0.061 | 2026-01-26 | 2026-02-20 | 056816 | CDFW inseason spreadsheet |
| 2026-02-18 | 2026-02-18 | Winter | Livingston Stone NFH | Sacramento River at John F. Reginato River Access | Production | 62.239 | 466344 | 100.0 | 0.013 | 2026-03-07 | 2026-03-12 | 053800, 056770, 056788, 056789 | CDFW inseason spreadsheet |
| 2026-02-19 | 2026-02-19 | Winter | Coleman NFH | North Fork Battle Creek, Manton, CA | Jumpstart | 2.325 | 207067 | 100.0 | 0.001 | 2026-03-14 | 2026-03-14 | 056769 | CDFW inseason spreadsheet |
| 2026-03-09 | 2026-03-10 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | 991.776 | 136369 | 100.0 | 0.727 | 2026-03-12 | 2026-04-08 | 062873, 063198 | CDFW inseason spreadsheet |
| 2026-03-23 | 2026-03-25 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | 418.900 | 199907 | 100.0 | 0.210 | 2026-03-28 | 2026-04-10 | 063223 | CDFW inseason spreadsheet |
- Number released with the adipose-fin clipped and a coded-wire tag (CWT).
- % Loss of Number Released = (Confirmed Loss/Number Released)*100.
- Chinook outside of the length-at-date criteria (Delta model) are not reported.
- The following CWT Tag Codes with confirmed recovery were used for more than 1 release group (release date, hatchery, production, race combination); the tag codes have been excluded from the table. In this dataset, there is no way to differentiate which release group was recovered if a CWT Tag Code is used for more than one. Please refer to the next table Multiple Release Groups for details.
- 062199
- 061970
- 062610
| Confirmed Loss CWT Tagcodes | Loss | Total CWT Number Released |
% CWT Marked of Total Number Released |
% Loss of CWT Number Released |
First Loss | Last Loss | CWT Number Released | Release Start | Release End | CWT Tag Race | Hatchery | Release Site | Release Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 062199 | 116.198 | 29928 | 100.0 | 0.777 | 2025-12-20 | 2026-02-14 | 14964 | 2025-12-08 | 2025-12-09 | Spring | SJ Restoration SCARF | SAN JOAQ R GRT VAL GR 140 | Production |
| 14964 | 2025-12-08 | 2025-12-09 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | |||||||
| 061970 | 78.732 | 998 | 100.0 | 15.778 | 2026-01-27 | 2026-02-20 | 499 | 2026-01-20 | 2026-01-20 | Spring | SJ Restoration SCARF | SAN JOAQ R GRT VAL GR 140 | Experimental |
| 499 | 2026-01-20 | 2026-01-20 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | |||||||
| 062610 | 182.931 | 4904 | 100.0 | 7.460 | 2026-01-24 | 2026-03-26 | 2452 | 2026-01-20 | 2026-01-20 | Spring | SJ Restoration SCARF | SAN JOAQ R GRT VAL GR 140 | Experimental |
| 2452 | 2026-01-20 | 2026-01-20 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP |
- Number released with the adipose-fin clipped and a coded-wire tag (CWT).
- % Loss of Number Released = (Confirmed Loss/Number Released)*100.
- Chinook outside of the length-at-date criteria (Delta model) are not reported.
Unconfirmed Hatchery Loss
- Unconfirmed Hatchery (Adipose-Fin Clipped) Chinook Salmon Loss at the SWP & CVP Delta Fish Facitilities, 10/1/2025 to 9/30/2026 , Data through 2026-04-22
- SWP: 8.660
- CVP: 10.688
- Adipose-fin clipped Chinook was observed during fish count, but tag code could not be determined (e.g., damaged tag, lost tag, no tag, or Chinook released).
CWT Hatchery Releases of Interest
| Release Start | Release End | CWT Tag Race | Hatchery | Release Site | Release Type | CWT Number Released |
% CWT Marked of Total Number Released |
CWT Tagcodes | Release Information Source |
|---|---|---|---|---|---|---|---|---|---|
| 2026-04-22 | 2026-04-22 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 127103 | 25.0 | 063314 | CDFW inseason spreadsheet |
| 2026-04-21 | 2026-04-21 | Fall | Mokelumne Hatchery | Lower American River at Sunrise Boat Ramp | Production | 109847 | 24.5 | 063310 | CDFW inseason spreadsheet |
| 2026-04-20 | 2026-04-20 | Fall | Nimbus Hatchery | Lower American River at Sunrise Boat Ramp | Production | 194491 | 25.0 | 062367 | CDFW inseason spreadsheet |
| 2026-04-18 | 2026-04-18 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island | Production | 176966 | 25.0 | 063312, 063313 | CDFW inseason spreadsheet |
| 2026-04-13 | 2026-04-13 | Fall | Feather River Hatchery | Feather River at Boyd's Pump Boat Launch | Production | 290859 | 25.0 | 063224 | CDFW inseason spreadsheet |
| 2026-04-09 | 2026-04-09 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 104677 | 25.0 | 056877 | CDFW inseason spreadsheet |
| 2026-04-09 | 2026-04-10 | Fall | Coleman NFH | Sacramento River at Tisdale Boat Ramp | Experimental | 208447 | 50.0 | 056884 | CDFW inseason spreadsheet |
| 2026-04-07 | 2026-04-07 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 203077 | 50.0 | 056881 | CDFW inseason spreadsheet |
| 2026-04-07 | 2026-04-07 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 502534 | 25.0 | 056858, 056860, 056861, 056874, 056875, 056926 | CDFW inseason spreadsheet |
| 2026-04-07 | 2026-04-07 | Fall | Feather River Hatchery | Battle Creek at CNFH | Production | 107428 | 25.0 | 056876 | CDFW inseason spreadsheet |
| 2026-04-07 | 2026-04-07 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 181000 | 100.0 | 063324 | CDFW inseason spreadsheet |
| 2026-04-02 | 2026-04-02 | Spring | Feather River Hatchery | Feather River at Boyd's Pump Boat Launch | Production | 502803 | 98.2 | 063311, 066620 | CDFW inseason spreadsheet |
| 2026-03-23 | 2026-03-23 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 1528213 | 25.0 | 055453, 055457, 056517, 056856, 056857, 056859, 056862, 056863, 056864, 056865, 056866, 056867, 056868, 056869, 056870, 056871, 056872, 056873 | CDFW inseason spreadsheet |
| 2026-03-23 | 2026-03-23 | Spring | Feather River Hatchery | Feather River at Gridley Boat Launch | Production | 488217 | 100.0 | 062858, 063234 | CDFW inseason spreadsheet |
| 2026-03-23 | 2026-03-24 | Fall | Coleman NFH | Sacramento River at Butte City | Experimental | 353933 | 100.0 | 056880 | CDFW inseason spreadsheet |
| 2026-03-20 | 2026-03-20 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 386851 | 100.0 | 056882 | CDFW inseason spreadsheet |
| 2026-03-20 | 2026-03-20 | Fall | Coleman NFH | Sacramento River at Sycamore Grove Boat Ramp | Experimental | 226102 | 100.0 | 056879 | CDFW inseason spreadsheet |
| 2026-03-19 | 2026-03-19 | Spring | Feather River Hatchery | Feather River at Boyd's Pump Boat Launch | Production | 514365 | 100.0 | 063036, 063236 | CDFW inseason spreadsheet |
| 2026-03-19 | 2026-03-19 | Spring | Feather River Hatchery | Feather River at Gridley Boat Launch | Production | 534583 | 100.0 | 063239 | CDFW inseason spreadsheet |
| 2026-03-18 | 2026-03-18 | Spring | Feather River Hatchery | Feather River at Boyd's Pump Boat Launch | Production | 508512 | 100.0 | 063229 | CDFW inseason spreadsheet |
| 2026-03-18 | 2026-03-18 | Spring | Feather River Hatchery | Feather River at Gridley Boat Launch | Production | 476812 | 100.0 | 063227 | CDFW inseason spreadsheet |
| 2025-11-17 | 2025-11-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 75119 | 100.0 | 056810 | CDFW inseason spreadsheet |
| 2025-11-13 | 2025-11-13 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 48426 | 100.0 | 056807 | CDFW inseason spreadsheet |
| 2025-06-16 | 2025-06-16 | Fall | Mokelumne Hatchery | POINT RICHMOND | Production | 197763 | 98.8 | 063196 | RMIS |
| 2025-06-05 | 2025-06-05 | Fall | Mokelumne Hatchery | FORT BAKER MINOR PT | Production | 124185 | 24.8 | 063190 | RMIS |
| 2025-06-04 | 2025-06-04 | Fall | Nimbus Hatchery | TIBURON MINOR PORT | Production | 170695 | 24.3 | 063049, 063273 | RMIS |
| 2025-06-03 | 2025-06-03 | Fall | Mokelumne Hatchery | TIBURON MINOR PORT | Production | 204822 | 24.7 | 061572, 063191 | RMIS |
| 2025-06-01 | 2025-06-01 | Fall | Feather River Hatchery | CROCKETT | Production | 163003 | 24.4 | 062013 | RMIS |
| 2025-05-30 | 2025-05-30 | Fall | Feather River Hatchery | CROCKETT | Production | 148514 | 24.4 | 062871, 063264 | RMIS |
| 2025-05-29 | 2025-05-29 | Fall | Nimbus Hatchery | CROCKETT | Production | 223004 | 24.7 | 063045, 063276 | RMIS |
| 2025-05-27 | 2025-05-27 | Fall | Feather River Hatchery | MARE ISLAND NET PEN | Production | 122232 | 24.5 | 063267 | RMIS |
| 2025-05-27 | 2025-05-28 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 104493 | 25.0 | 056761, 056762 | CDFW inseason spreadsheet |
| 2025-05-25 | 2025-06-07 | Fall | Mokelumne Hatchery | HALF MOON BAY JOHN PR NET | Production | 184637 | 24.6 | 063212 | RMIS |
| 2025-05-24 | 2025-05-24 | Fall | Mokelumne Hatchery | MONTEREY MINOR PORT | Production | 317832 | 99.8 | 063209, 063210 | RMIS |
| 2025-05-22 | 2025-05-22 | Fall | Mokelumne Hatchery | FORT BAKER MINOR PT | Production | 125020 | 25.0 | 063188 | RMIS |
| 2025-05-21 | 2025-05-21 | Fall | Nimbus Hatchery | TIBURON MINOR PORT | Production | 176595 | 24.9 | 063043, 063272 | RMIS |
| 2025-05-21 | 2025-05-23 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 224534 | 25.0 | 056759, 056760 | CDFW inseason spreadsheet |
| 2025-05-20 | 2025-05-20 | Fall | Feather River Hatchery | TIBURON MINOR PORT | Production | 245841 | 24.5 | 063038 | RMIS |
| 2025-05-20 | 2025-05-22 | Fall | Coleman NFH | Sacramento River at Butte City Boat Launch | Experimental | 187406 | 25.0 | 056757, 056758 | CDFW inseason spreadsheet |
| 2025-05-19 | 2025-05-19 | Fall | Feather River Hatchery | CROCKETT | Production | 245132 | 24.5 | 063268, 063269 | RMIS |
| 2025-05-17 | 2025-05-17 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 121740 | 25.0 | 063189 | RMIS |
| 2025-05-16 | 2025-05-16 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 119395 | 24.6 | 063187 | RMIS |
| 2025-05-15 | 2025-05-15 | Fall | Nimbus Hatchery | CALIF. MARIT. ACAD. | Production | 214606 | 25.0 | 063275 | RMIS |
| 2025-05-13 | 2025-05-13 | Fall | Feather River Hatchery | MARE ISLAND NET PEN | Production | 163582 | 24.5 | 063260, 063266 | RMIS |
| 2025-05-13 | 2025-05-13 | Fall | Merced Fish Facility | SAN JOAQ SHRM ISL NET PEN | Production | 20442 | 7.3 | 060057 | RMIS |
| 2025-05-12 | 2025-05-12 | Fall | Merced Fish Facility | SAN JOAQ SHRM ISL NET PEN | Production | 142081 | 33.0 | 060058, 063032 | RMIS |
| 2025-05-12 | 2025-05-12 | Fall | Nimbus Hatchery | MARE ISLAND NET PEN | Production | 173052 | 24.9 | 063050, 063271 | RMIS |
| 2025-05-08 | 2025-05-08 | Fall | Coleman NFH | Sacramento River at Colusa | Experimental | 131516 | 25.0 | 056754, 056801, 056802 | CDFW inseason spreadsheet |
| 2025-05-08 | 2025-05-09 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 258497 | 25.0 | 055451, 055452, 056755, 056756 | CDFW inseason spreadsheet |
| 2025-05-07 | 2025-05-07 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 77027 | 25.0 | 056753 | CDFW inseason spreadsheet |
| 2025-05-06 | 2025-05-06 | Fall | Mokelumne Hatchery | FORT BAKER MINOR PT | Production | 247341 | 24.6 | 063181, 063182 | RMIS |
| 2025-05-05 | 2025-05-05 | Fall | Feather River Hatchery | MARE ISLAND NET PEN | Production | 165701 | 24.4 | 063257, 063258 | RMIS |
| 2025-05-02 | 2025-05-02 | Fall | Feather River Hatchery | FEATHER BOYDS PUMP RAMP | Production | 244786 | 24.5 | 063194 | RMIS |
| 2025-05-02 | 2025-05-02 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 122227 | 25.0 | 063186 | RMIS |
| 2025-05-01 | 2025-05-01 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 125961 | 24.7 | 063185 | RMIS |
| 2025-05-01 | 2025-05-01 | Fall | Nimbus Hatchery | AMERICAN R AT SUNRISE | Production | 221867 | 24.8 | 063044, 063274 | RMIS |
| 2025-04-30 | 2025-04-30 | Fall | Coleman NFH | Sacramento River at Colusa | Experimental | 166191 | 25.0 | 056749, 056752 | CDFW inseason spreadsheet |
| 2025-04-29 | 2025-04-29 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL OP JRSY | Production | 121441 | 25.0 | 063180 | RMIS |
| 2025-04-28 | 2025-04-28 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 201894 | 25.0 | 056750, 056751 | CDFW inseason spreadsheet |
| 2025-04-24 | 2025-04-24 | Fall | Feather River Hatchery | FEATHER BOYDS PUMP RAMP | Production | 245731 | 24.5 | 063195 | RMIS |
| 2025-04-23 | 2025-04-23 | Fall | Feather River Hatchery | FEATHER AT GRIDLEY | Production | 122308 | 24.5 | 063265 | RMIS |
| 2025-04-21 | 2025-04-22 | Fall | Coleman NFH | Conoco San Pablo Bay | Experimental | 280000 | 100.0 | 056767 | CDFW inseason spreadsheet |
| 2025-04-18 | 2025-04-18 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 121342 | 25.0 | 063179 | RMIS |
| 2025-04-17 | 2025-04-17 | Fall | Mokelumne Hatchery | SAN JOAQ SHRM ISL NET PEN | Production | 121142 | 25.0 | 063184 | RMIS |
| 2025-04-17 | 2025-04-18 | Fall | Coleman NFH | Sacramento River at Colusa Boat Ramp | Experimental | 197639 | 32.1 | 056745, 056746 | CDFW inseason spreadsheet |
| 2025-04-16 | 2025-04-16 | Winter | Coleman NFH | North Fork Battle Creek, Manton, CA | Jumpstart | 117225 | 100.0 | 056797, 056798, 056799 | CDFW inseason spreadsheet |
| 2025-04-16 | 2025-04-16 | Fall | Coleman NFH | Sacramento River at RBDD Boat Ramp | Experimental | 221603 | 100.0 | 056766 | CDFW inseason spreadsheet |
| 2025-04-16 | 2025-04-16 | Fall | Mokelumne Hatchery | SAC R AT BUTTE CITY | Production | 129278 | 24.7 | 063183 | RMIS |
| 2025-04-15 | 2025-04-15 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 695170 | 32.8 | 056600, 056700, 056747, 056748, 056768, 056800 | CDFW inseason spreadsheet |
| 2025-04-15 | 2025-04-15 | Fall | Mokelumne Hatchery | Sacramento River at Butte City Boat Launch | Production | 127368 | 25.0 | 062177 | CDFW inseason spreadsheet |
| 2025-04-15 | 2025-04-15 | Fall | Mokelumne Hatchery | SAC R AT BUTTE CITY | Production | 255978 | 24.9 | 063177, 063178 | RMIS |
| 2025-04-14 | 2025-04-14 | Fall | Feather River Hatchery | SAC R AT POSSE GNDS TURTL | Production | 244633 | 24.5 | 063193 | RMIS |
| 2025-04-13 | 2025-04-13 | Fall | Feather River Hatchery | SAC R AT POSSE GNDS TURTL | Production | 245823 | 24.5 | 063192 | RMIS |
| 2025-04-09 | 2025-04-09 | Spring | Feather River Hatchery | FEATHER AT GRIDLEY | Production | 487435 | 48.2 | 061537, 062012, 062884 | RMIS |
| 2025-03-21 | 2025-03-21 | Spring | Feather River Hatchery | FEATHER BOYDS PUMP RAMP | Production | 468109 | 48.7 | 063230 | RMIS |
| 2025-03-19 | 2025-03-20 | Spring | SJ Restoration SCARF | SAN JOAQ R GRT VAL GR 140 | Experimental | 102830 | 100.0 | 061866 | RMIS |
| 2025-03-16 | 2025-03-16 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 215543 | 25.0 | 056400, 056500 | CDFW inseason spreadsheet |
| 2025-03-14 | 2025-03-14 | Spring | Feather River Hatchery | FEATHER BOYDS PUMP RAMP | Production | 468141 | 48.7 | 063233 | RMIS |
| 2025-03-11 | 2025-05-20 | Spring | SJ Restoration SCARF | SAN JOAQ RIV MEND-FRIANT | Experimental | 14000 | 100.0 | 060400 | RMIS |
| 2025-02-20 | 2025-02-20 | Spring | SJ Restoration SCARF | SAN JOAQ R GRT VAL GR 140 | Experimental | 43779 | 100.0 | 062203 | RMIS |
| 2025-02-13 | 2025-02-13 | Winter | Livingston Stone NFH | Sacramento River at John F. Reginato River Access | Production | 261222 | 100.0 | 055200, 055500, 055600, 055700, 055800 | CDFW inseason spreadsheet |
| 2025-02-01 | 2025-02-01 | Winter | Livingston Stone NFH | Sacramento River at John F. Reginato River Access | Production | 177316 | 100.0 | 055100, 055300, 055400 | CDFW inseason spreadsheet |
| 2025-01-17 | 2025-01-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 74425 | 100.0 | 053000 | CDFW inseason spreadsheet |