Chinook salmon swimming in Blue Creek © Thomas Dunklin

Population Data

Fish population Data

These tables providing the supporting data to the 2016/2017 Status of California’s Salmon and Steelhead.

The Evolutionary Significant Unit/Distinct Population Segment (ESU/DPS) totals are summations of the data presented in the California Salmon Snapshots, based on the notes listed below. They do not represent official ESU or DPS estimates by the California Department of Fish and Wildlife or National Marine Fisheries Service. There are individual agency or consultant monitoring data that have not yet been incorporated into the California Salmon Snapshots, such as the Santa Ynez River steelhead monitoring by Cachuma Operation and Maintenance Board or FISHBIO’s monitoring that may supplement the monitoring reported in GrandTab.

Notes:
* Hatchery numbers not yet published
0 = fish or redds not detected
> = data only available for a subwatershed
Totals assume two fish per redd.
For details on the data qualifications, see notes on the individual Snapshots pages or in the downloadable data file.
++Spring run estimates included with the fall run estimates
>> = monitoring temporally incomplete and values do not represent an officially reported number; data reported to give indication of presence.

 

For coastal California Snapshots, the 2016/17 Snapshot is defined as fall 2016 to spring 2017, as per when salmon and steelhead return from the ocean to spawn. Fall Chinook spawning season is fall 2016. Coho season is fall 2016 through early January 2017. Steelhead season can start in fall 2016 but is primarily winter and spring 2017. Spring Chinook return in spring 2017 and spawn in fall 2017.

For Central Valley Snapshots, the 2016 Snapshot is defined as November 2015 to December 2016, as per when salmon and steelhead return from the ocean to spawn. Late fall run Chinook return in to the Sacramento River and its tributaries in early November through February, with spawning occurring from January through mid-April. Winter run Chinook return as early as December with spawning from April through August. Spring run Chinook return in late January through August, with spawning occurring from mid-August through October. Fall run Chinook return from June through November and spawn from early October through late December. Steelhead migration can start in fall but is primarily during winter and spring, with spawning occurring December through April.

ESU/DPS Snapshot Population Year Total Returns In-River Returns Hatchery Returns
California Total 2016/2017 8,090 7,473 617
Central California Coast Coho Salmon ESU Total 2016/2017 4,923 4,920 3
Albion River 2016/2017 187 187
Aptos Creek 2016/2017 unknown unknown
Big River 2016/2017 221 221
Caspar Creek 2016/2017 59 59
Garcia River 2016/2017 93 93
Gazos Creek 2016/2017 0 0
Lagunitas Creek 2016/2017 340 340
Little River 2016/2017 31 31
Navarro River 2016/2017 313 313
Noyo River 2016/2017 2,191 2,191
Pescadero Creek 2016/2017 0 0
Pine Gulch Creek 2016/2017 0 0
Pudding Creek 2016/2017 573 573
Redwood Creek (Marin Co) 2016/2017 26 26
Russian River 2016/2017 474 471 3
San Lorenzo River 2016/2017 0 0
San Vicente Creek 2016/2017 0 0
Scott Creek 2016/2017 20 20
Ten Mile River 2016/2017 395 395
Usal Creek 2016/2017 0 0
Waddell Creek 2016/2017 0 0
Southern OR\Northern CA Coasts Coho Salmon ESU Total 2016/2017 3,167 2,553 614
Humboldt Bay Tributaries 2016/2017 >466 >466
Mattole River 2016/2017 0 0
Middle and Upper Klamath River 2016/2017 171 85 86
Redwood Creek (Humboldt Co) 2016/2017 0
Salmon River 2016/2017 0
Shasta River 2016/2017 226 226
Smith River 2016/2017 48 48
South Fork Eel River 2016/2017 0
Scott River 2016/2017 931 465 redds 1
Trinity River 2016/2017 1,325 798 527

ESU/DPS Snapshot Population Year Total Returns In-River Returns Hatchery Returns
California Fall-run & Late Fall-run Chinook Total 2016 161,182 109,222 51,960
California Coastal Chinook Salmon ESU Total 2016/2017 8,227 8,191 36
Albion River 2016/2017 0 0
Big River 2016/2017 0 0
Garcia River 2016/2017 93 93
Humboldt Bay Tributaries 2016/2017 >4 >4
Lagunitas Creek 2016/2017 64 64
Mattole River 2016/2017 1,858 929 redds
Navarro River 2016/2017 0 0
Noyo River 2016/2017 0 0
Redwood Creek (Humboldt Co) 2016/2017 unknown unknown
Russian River 2016/2017 2,654 2,618 36
South Fork Eel River 2016/2017 2,916 1458 redds
Ten Mile River 2016/2017 638 638
Central Valley Fall & Late Fall-run Chinook Salmon ESU Total 2016 133,017 85,339 47,678
American River 2016 23,700 14,473 9,227
Antelope Creek 2016 138 138
Battle Creek 2016 9,762 1,236 8,526
Bear Creek 2016 32 32
Butte Creek 2016 626 626
Clear Creek 2016 2,481 2,481
Cosumnes River 2016 1,248 1,248
Cottonwood Creek 2016 813 813
Cow Creek 2016 822 822
Deer Creek 2016 253 253
Feather River 2016 58,817 38,775 20,042
Merced River 2016 5,537 2,541 2,996
Mill Creek 2016 602 602
Mokelumne River 2016 8,871 1,984 6,887
Paynes Creek 2016 8 8
Sacramento River (mainstem) 2016 4,573 4,573
Stanislaus River 2016 9,330 9,330
Tuolumne River 2016 1,347 1,347
Yuba River 2016 4,057 4,057
Central Valley Fall & Late Fall-run Chinook Salmon ESU Total 2015/2016 5,613 3,262 2,351
Battle Creek 2015/2016 2,408 57 2,351
Clear Creek 2015/2016 55 55
Sacramento River (mainstem) 2015/2016 3,150 3,150
Upper Klamath & Trinity Rivers Chinook Salmon ESU Total 2015/2016 19,531 15,401 4,130
Middle and Upper Klamath River 2015/2016 7,751 5,164 2,587
Salmon River 2015/2016 1,058 1,058
Scott River 2015/2016 1,515 1,515
Shasta River 2015/2016 2,889 2,889
Trinity River 2015/2016 6,318 4,775 1,543
Southern OR & Northern CA Coastal Chinook Salmon ESU Total 2015/2016 407 291 116
Lower Klamath River 2015/2016 291 291
Smith River 2015/2016 116 unknown 116

ESU/DPS Snapshot Population Year Total Returns In-River Returns Hatchery Returns
Sacramento River Winter-run Chinook Salmon ESU Total 2016 1,546 1,546
Sacramento River (mainstem) 2016 1,546 1,546

ESU/DPS Snapshot Population Year Total Returns In-River Returns Hatchery Returns
California Total 2016 12,345 8,579 3,766
Central Valley Spring-run Chinook Salmon ESU Total 2016 8,112 6,453 1,659
Antelope Creek 2016 7 7
Battle Creek 2016 180 180
Big Chico 2016 0 0
Butte Creek 2016 5,731 5,731
Clear Creek 2016 29 29
Cottonwood Creek 2016 0 0
Deer Creek 2016 331 331
Feather River 2016 1,659 ++ 1,659
Mill Creek 2016 175 175
Sacramento River (mainstem) 2016 0 0
Upper Klamath & Trinity Rivers Chinook Salmon ESU Total 2016/2017 4,233 2,126 2,107
Salmon River 2016/2017 436 436
Trinity River 2016/2017 3,797 1,690 2,107

ESU/DPS Snapshot Population Year Total Returns In-River Returns Hatchery Returns
California Total 2017 15,931 5,591 10,340
Northern California Steelhead ESU Total 2,117 2,117 0
Albion River 2017 0 0
Big River 2017 204 204
Caspar Creek 2017 23 23
Garcia River 2017 153 153
Humboldt Bay Tributaries 2017 235 235
Little River 2017 2 2
Mattole River 2017 444 222 redds
Navarro River 2017 190 190
Noyo River 2017 220 220
Pudding Creek 2017 72 72
Redwood Creek (Humboldt Co) 2017 unknown unknown
South Fork Eel River 2017 unknown unknown
Ten Mile River 2017 537 537
Usal Creek 2017 37 37
Central California Coast Steelhead ESU Total 8,427 130 8,297
Aptos Creek 2017 unknown unknown
Gazos Creek 2017 unknown unknown
Lagunitas Creek 2017 60 60
Pescadero Creek 2017 unknown unknown
Pine Gulch Creek 2017 0 0
Redwood Creek (Marin Co) 2017 8 8
Russian River 2017 >8,297 unknown 8,297
San Lorenzo River 2017 unknown unknown
San Vicente Creek 2017 unknown unknown
Scott Creek 2017 62 62
Waddell Creek 2017 unknown unknown
Klamath Mountains Province Winter Steelhead ESU Total 5,173 3,130 2,043
Salmon River 2017 unknown unknown
Scott River 2017 224 224
Shasta River 2017 36 36
Smith River 2017 >469 unknown 469
Trinity River 2017 4444 2,870 1,574
Klamath Mountains Province Summer Steelhead Salmon River 2017 203 203
South-Central California Coast Steelhead Carmel River 2017 7 7
Southern California Steelhead ESU Total 4 4 0
Malibu Creek 2017 1 1
Santa Clara River 2017 0 0
Topanga Canyon Creek 2017 3 3
Ventura River 2017 0 0
Central Valley Steelhead 2017 unknown