Hatchery Chinook Loss Tables of Confirmed and Unconfirmed CWT and CWT Releases WY2026
Data Courtesy of CDFW, Bay Delta Region
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-11-13 | 2025-11-13 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 8.646 | 143346 | 100.0 | 0.006 | 2025-12-26 | 2025-12-31 | 056808, 056809 |
| 2025-12-08 | 2025-12-09 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | 113.596 | 14964 | 100.0 | 0.759 | 2025-12-20 | 2026-01-13 | 062199 |
| 2025-12-17 | 2025-12-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 747.045 | 468876 | 100.0 | 0.159 | 2025-12-25 | 2026-01-14 | 053700, 056806, 056811, 056812, 056814, 056815, 056817 |
| 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 |
- 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 2026-01-22
- SWP: NA
- CVP: 5.484
- 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 |
|---|---|---|---|---|---|---|---|---|
| 2026-01-23 | 2026-01-23 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 1217157 | 100.0 | None |
| 2026-01-20 | 2026-01-20 | Fall | Feather River Hatchery | Feather River at Thermalito Outlet Boat Ramp | Experimental | 748999 | 100.0 | None |
| 2026-01-20 | 2026-01-20 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | Experimental | 2951 | 100.0 | 061970, 062610 |
| 2026-01-16 | 2026-01-16 | Fall | Coleman NFH | Sacramento River at Posse Grounds Boat Ramp | Experimental | 480101 | 100.0 | None |
| 2026-01-12 | 2026-01-12 | Fall | Feather River Hatchery | Feather River at Thermalito Outlet Boat Ramp | Experimental | 583401 | 100.0 | None |
| 2026-01-08 | 2026-01-08 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 57109 | 100.0 | 056816 |
| 2026-01-05 | 2026-01-05 | Fall | Feather River Hatchery | Feather River at Thermalito Outlet Boat Ramp | Experimental | 554203 | 100.0 | None |
| 2025-11-17 | 2025-11-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 75119 | 100.0 | 056810 |
| 2025-11-13 | 2025-11-13 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Production | 120446 | 100.0 | 056805, 056807 |
| 2025-06-07 | 2025-06-07 | Fall | Mokelumne Hatchery | Pillar Point Harbor | Production | 62500 | 25.0 | 063212 |
| 2025-06-05 | 2025-06-05 | Fall | Mokelumne Hatchery | San Francisco at Fort Baker | Production | 125203 | 24.9 | 063190 |
| 2025-06-04 | 2025-06-04 | Fall | Nimbus Hatchery | San Francisco Bay at Tiburon | Production | 175672 | 25.0 | 063049, 063273 |
| 2025-06-01 | 2025-06-01 | Fall | Feather River Hatchery | Conoco San Pablo Bay | Production | 166663 | 25.0 | 062013 |
| 2025-05-31 | 2025-05-31 | Fall | Mokelumne Hatchery | Pillar Point Harbor | Production | 62500 | 25.0 | 063212 |
| 2025-05-30 | 2025-05-30 | Fall | Feather River Hatchery | Conoco San Pablo Bay | Production | 151901 | 24.8 | 062871, 063264 |
| 2025-05-29 | 2025-05-29 | Fall | Nimbus Hatchery | Conoco San Pablo Bay | Production | 225375 | 25.0 | 063045, 063276 |
| 2025-05-27 | 2025-05-27 | Fall | Feather River Hatchery | Mare Island at San Pablo Bay | Production | 124951 | 25.0 | 063267 |
| 2025-05-27 | 2025-05-28 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 104493 | 25.0 | 056761, 056762 |
| 2025-05-25 | 2025-05-25 | Fall | Mokelumne Hatchery | Pillar Point Harbor | Production | 62500 | 25.0 | 063212 |
| 2025-05-24 | 2025-05-24 | Fall | Mokelumne Hatchery | Monterey Bay at Monterey Wharf | Production | 320455 | 100.0 | 063209, 063210 |
| 2025-05-22 | 2025-05-22 | Fall | Mokelumne Hatchery | San Francisco at Fort Baker | Production | 125144 | 25.0 | 063188 |
| 2025-05-21 | 2025-05-21 | Fall | Nimbus Hatchery | San Francisco Bay at Tiburon | Production | 177547 | 25.0 | 063043, 063272 |
| 2025-05-21 | 2025-05-23 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 224534 | 25.0 | 056759, 056760 |
| 2025-05-20 | 2025-05-20 | Fall | Feather River Hatchery | San Francisco Bay at Tiburon | Production | 251273 | 25.0 | 063038 |
| 2025-05-20 | 2025-05-22 | Fall | Coleman NFH | Sacramento River at Butte City Boat Launch | Experimental | 187406 | 25.0 | 056757, 056758 |
| 2025-05-19 | 2025-05-19 | Fall | Feather River Hatchery | San Francisco Bay at Conoco | Production | 250493 | 25.0 | 063268, 063269 |
| 2025-05-17 | 2025-05-17 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 121774 | 25.0 | 063189 |
| 2025-05-16 | 2025-05-16 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 121849 | 25.0 | 063187 |
| 2025-05-15 | 2025-05-15 | Fall | Nimbus Hatchery | San Pablo Bay at CSU Maritime Academy | Production | 214830 | 25.0 | 063275 |
| 2025-05-13 | 2025-05-13 | Fall | Feather River Hatchery | Mare Island at San Pablo Bay | Production | 167195 | 25.0 | 063260, 063266 |
| 2025-05-13 | 2025-05-13 | Fall | Merced Fish Facility | San Joaquin River at Sherman Island Boat Launch | Production | 23513 | 8.4 | 060057 |
| 2025-05-12 | 2025-05-12 | Fall | Merced Fish Facility | San Joaquin River at Sherman Island Boat Launch | Production | 142081 | 33.0 | 060058, 063032 |
| 2025-05-12 | 2025-05-12 | Fall | Nimbus Hatchery | Mare Island at San Pablo Bay | Production | 173555 | 25.0 | 063050, 063271 |
| 2025-05-08 | 2025-05-08 | Fall | Coleman NFH | Sacramento River at Colusa | Experimental | 131516 | 25.0 | 056754, 056801, 056802 |
| 2025-05-08 | 2025-05-09 | Fall | Coleman NFH | Sacramento River at Tisdale | Experimental | 258497 | 25.0 | 055451, 055452, 056755, 056756 |
| 2025-05-07 | 2025-05-07 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 77027 | 25.0 | 056753 |
| 2025-05-06 | 2025-05-06 | Fall | Mokelumne Hatchery | San Francisco at Fort Baker | Production | 251487 | 25.0 | 063181, 063182 |
| 2025-05-05 | 2025-05-05 | Fall | Feather River Hatchery | Mare Island at San Pablo Bay | Production | 86006 | 25.0 | 063257 |
| 2025-05-02 | 2025-05-02 | Fall | Feather River Hatchery | Feather River at Boyd's Pump Boat Ramp | Production | 250258 | 25.0 | 063194 |
| 2025-05-02 | 2025-05-02 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 122421 | 25.0 | 063186 |
| 2025-05-01 | 2025-05-01 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 127435 | 25.0 | 063185 |
| 2025-05-01 | 2025-05-01 | Fall | Nimbus Hatchery | Lower American River at Sunrise Boat Ramp | Production | 222527 | 25.0 | 063044, 063274 |
| 2025-04-30 | 2025-04-30 | Fall | Coleman NFH | Sacramento River at Colusa | Experimental | 166191 | 25.0 | 056749, 056752 |
| 2025-04-29 | 2025-04-29 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 121500 | 25.0 | 063180 |
| 2025-04-28 | 2025-04-28 | Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 201894 | 25.0 | 056750, 056751 |
| 2025-04-24 | 2025-04-24 | Fall | Feather River Hatchery | Feather River at Boyd's Pump Boat Ramp | Production | 251090 | 25.0 | 063195 |
| 2025-04-23 | 2025-04-23 | Fall | Feather River Hatchery | Feather River at Gridley Boat Launch | Production | 125032 | 25.0 | 063265 |
| 2025-04-21 | 2025-04-22 | Fall | Coleman NFH | Conoco San Pablo Bay | Experimental | 280000 | 100.0 | 056767 |
| 2025-04-18 | 2025-04-18 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 121361 | 25.0 | 063179 |
| 2025-04-17 | 2025-04-17 | Fall | Mokelumne Hatchery | San Joaquin River at Sherman Island Net Pen | Production | 121261 | 25.0 | 063184 |
| 2025-04-17 | 2025-04-18 | Fall | Coleman NFH | Sacramento River at Colusa Boat Ramp | Experimental | 197639 | 32.1 | 056745, 056746 |
| 2025-04-16 | 2025-04-16 | Winter | Coleman NFH | North Fork Battle Creek, Manton, CA | Jumpstart | 117225 | 100.0 | 056797, 056798, 056799 |
| 2025-04-16 | 2025-04-16 | Fall | Coleman NFH | Sacramento River at RBDD Boat Ramp | Experimental | 221603 | 100.0 | 056766 |
| 2025-04-16 | 2025-04-16 | Fall | Mokelumne Hatchery | Sacramento River at Butte City Boat Launch | Production | 130989 | 25.0 | 063183 |
| 2025-04-15 | 2025-04-15 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 695170 | 32.8 | 056600, 056700, 056747, 056748, 056768, 056800 |
| 2025-04-15 | 2025-04-15 | Fall | Mokelumne Hatchery | Sacramento River at Butte City Boat Launch | Production | 256941 | 25.0 | 062177, 063178 |
| 2025-04-14 | 2025-04-14 | Fall | Feather River Hatchery | Sacramento River at Turtle Bay Boat Launch, Redding | Production | 250013 | 25.0 | 063193 |
| 2025-04-13 | 2025-04-13 | Fall | Feather River Hatchery | Sacramento River at Turtle Bay Boat Launch, Redding | Production | 251151 | 25.0 | 063192 |
| 2025-04-09 | 2025-04-09 | Spring | Feather River Hatchery | Feather River at Gridley Boat Launch | Experimental | 504304 | 49.8 | 061537, 062012, 062884 |
| 2025-04-01 | 2025-05-31 | Spring | SJ Restoration SCARF | Owl Hollow to Thomas Farm at Reach 1 of San Joaquin River | Experimental | 14000 | 100.0 | 060400 |
| 2025-03-21 | 2025-03-21 | Spring | Feather River Hatchery | Feather River at Boyd's Pump Boat Ramp | Experimental | 475831 | 49.4 | 063230 |
| 2025-03-19 | 2025-03-20 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | Experimental | 102830 | 100.0 | 061866 |
| 2025-03-16 | 2025-03-16 | Fall | Coleman NFH | Battle Creek at CNFH | Production | 215543 | 25.0 | 056400, 056500 |
| 2025-03-14 | 2025-03-14 | Spring | Feather River Hatchery | Feather River at Boyd's Pump Boat Ramp | Experimental | 476741 | 49.6 | 063233 |
| 2025-02-20 | 2025-02-20 | Spring | SJ Restoration SCARF | San Joaquin River at Highway 140 | SJRRP | 43779 | 100.0 | 062203 |
| 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 |
| 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 |
| 2025-01-17 | 2025-01-17 | Late-Fall | Coleman NFH | Battle Creek at CNFH | Experimental | 74425 | 100.0 | 053000 |