Tag Archives: salmon

Nimbus Hatchery Fish Ladder to Open Oct. 9

The Nimbus Hatchery Fish Ladder on the American River will open on Monday, Oct. 9 at 10:45 a.m. The ladder is opening unusually early in the season to accommodate the arrival of returning adult fall-run Chinook salmon that hatched in the Coleman National Fish Hatchery (CNFH) in Battle Creek in 2014. Eggs from fall-run Chinook salmon that stray to Nimbus Hatchery will be returned to CNFH to ensure a healthy population of these fish for commercial, recreational and ecological purposes.

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“These fish were born at the height of the drought in 2014,” said Jay Rowan, California Department of Fish and Wildlife (CDFW) North Central Region Senior Environmental Scientist. “They were trucked to the Delta as fry and released near Rio Vista and the San Pablo Bay as part of a massive effort to improve their chances for survival in a year of poor river conditions.”

Returning now as adults, many of these salmon will stray into the American River and not return to their home waters to spawn. The lack of returning fish will make it extremely difficult for the CNFH to reach their goal of producing 12 million fall-run Chinook salmon this fall to release in the waters below Lake Shasta.

CDFW is partnering with the U.S. Fish and Wildlife Service (USFWS), with the support of the Bureau of Reclamation, to collect eggs at Nimbus Fish Hatchery to assist CNFH in meeting its production goals and maintaining a stable salmon population on Battle Creek and the upper Sacramento River.

When the salmon reach Nimbus Hatchery, staff will separate out the fish that have had their adipose fin removed, indicating that they carry a tiny coded wire tag that records their hatchery of origin. Fish identified as being of CNFH origin will be spawned with one another, and their fertilized eggs returned to CNFH. Fish that have not had their adipose fin removed will be spawned and their eggs held until it is determined if they will be needed to meet CNFH production goals.  Fish that are not yet ready to spawn will have a colored tag attached to their dorsal fin and will be returned to the American River, where they will be available to anglers until they either spawn naturally or climb the ladder again and are spawned at the hatchery to meet the Nimbus Fish Hatchery egg collection goals. While anglers are able to catch and keep fish marked with these tags, the tags have no monetary value and do not need to be returned to CDFW.

Nimbus Hatchery visitors can observe salmon in the fish ladder and view the spawning process through windows in the Visitor Center. For more information about spawning schedules and educational opportunities at Nimbus Hatchery, please visit the CDFW website at www.wildlife.ca.gov/fishing/hatcheries/nimbus.

Media Contacts:
Laura Drath, CDFW North Central Region, (916) 358-2884
Andrew Hughan, CDFW Communications, (916) 201-2958
Shane Hunt, U.S. Fish and Wildlife Service, (916) 930-5604

Feather River Hatchery Salmon Ladder Now Open

The fish ladder at Feather River Hatchery in Oroville opened Monday, Sept. 18, signaling the start of the spawning season on the Feather River. California Department of Fish and Wildlife (CDFW) hatchery workers opened the gates in the ladder about 8 a.m. Normally more than 3 million spring-run eggs and 12 million fall-run eggs are taken over the next two months in order to produce Chinook salmon for release next spring.

Visitors can observe the salmon through the viewing windows and from the observation deck located at the base of the fish barrier dam. At the main side of the hatchery, visitors can observe CDFW technicians performing the spawning process.

The public viewing areas have been repaired and are safe for the public after sustaining damage in the aftermath of the Oroville Dam spillway incident in February.

As the fall fishing season begins, CDFW reminds anglers to release any fish tagged with green and yellow Hallprint tags located on the dorsal fin. These tags have no monetary value and are used to identify spring-run salmon, a state and federally listed threatened species that cannot be possessed.

Thousands of school children tour the Feather River Hatchery each year. For more information about spawning schedules and educational opportunities at the Feather River Hatchery, please call (530) 538-2222. For information about hatchery tours, please call (530) 534-2306.

There are nine state-run anadromous salmon and steelhead hatcheries, all of which will participate in the salmon spawning effort. Those hatcheries, along with federally run hatcheries, will be responsible for the release of 40 million juvenile fall-run Chinook salmon into California waters. These massive spawning efforts were put in place over the last 50 years to offset fish losses caused by dams that block salmon from historic spawning habitat.

Once the young salmon reach 2 to 4 inches in length, 100 percent of the spring-run stock and 25 percent of the fall-run stock will be adipose fin clipped and implanted with coded wire tags prior to release. CDFW biologists use the information from the tags to chart the survival, catch and return rates of the fish.

For more information about California’s fish hatcheries, please visit www.wildlife.ca.gov/fishing/hatcheries.

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Media Contacts:
Penny Crawshaw, Feather River Hatchery, (530) 538-2222

Andrew Hughan, CDFW Communications, (916) 201-2958

 

Pump Failure Kills Fall-Run Chinook Salmon at Feather River Fish Hatchery – Thermalito Facility

An estimated 200,000 to 300,000 fall-run Chinook salmon were killed early yesterday morning at the Feather River Fish Hatchery – Thermalito Facility due to a pump failure from a faulty wire. More than two million remaining salmon at the facility will be released over the next month as they reach an appropriate size.

Overnight on May 10, 2017, the primary pump supplying well water to the facility failed, drastically reducing the water supply to the hatchery raceways.

California Department of Fish and Wildlife (CDFW) staff first observed stressed fall-run Chinook salmon at 6:30 a.m. along with mortalities in the raceways due to low dissolved oxygen levels. Hatchery staff immediately started supplying supplemental oxygen to the raceways to keep fish alive. CDFW notified the California Department of Water Resources (DWR), which manages the wells, and DWR electricians made immediate repairs to restart the pump motor and resume the flow of water.

Early loss estimates suggest 200,000-300,000 fall-run perished in this event. A rapid response likely saved thousands if not millions more fall-run Chinook at the facility.

The fall-run were reared at the Thermalito Facility after they were evacuated from the main hatchery in February following erosion of the Oroville Dam gated flood control spillway.

More than two million fall-run Chinook at the Thermalito Facility will remain there until they reach an appropriate size for release to the Feather River. Releases begin this week and will continue over the next month. CDFW and DWR staff are developing additional redundancy measures to prevent future pump failures.

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CDFW Releases First Million of Evacuated Fish into Feather River

The California Department of Fish and Wildlife (CDFW) in cooperation with the National Oceanic and Atmospheric Administration (NOAA) National Marine Fisheries Service (NMFS) released one million state and federally listed threatened spring-run Chinook salmon into the Feather River on Monday, March 20.

These were the first fish to be released that were evacuated from the Feather River Hatchery in Oroville on Feb. 9, when the water became dangerously murky following the failure of the Oroville Dam spillway. The fish were moved to the Feather River/Thermalito Annex Hatchery and held there until conditions improved.

“Based on the weather forecast and current reservoir storage, we are anticipating high flows in the Feather River for some time,” said CDFW Senior Environmental Scientist Colin Purdy. “Releasing these fish now should allow them to imprint on Feather River water and move downstream before flows drop back down to normal levels.”Annex release 2

Central Valley spring-run Chinook are a state and federally listed species and their abundance has declined considerably during the recent drought. The Feather River Fish Hatchery plays a key role in the state’s efforts to propagate this unique run of Chinook salmon.

“Today’s fish release marks the success of federal and state agencies coordinating and managing valuable resources while ensuring public safety during a crisis situation,” said Howard Brown, NOAA Sacramento River Basin Branch Chief. “NOAA Fisheries remains deeply concerned with the damage of the Oroville spillways and is committed to reducing further threats to California communities and ecosystems.”

“This is another example of the extraordinary multi-agency effort to respond to this unfortunate incident,” said California Department of Water Resources Acting Director Bill Croyle. “We will continue to work closely to protect the Feather River and its fisheries.”

Of the fish that were evacuated, another million spring-run Chinook and three million fall-run Chinook remain at the Annex Hatchery. CDFW and NOAA fisheries staff will continuously evaluate the remaining salmon and begin planting them in northern California Rivers when the fish are mature enough.

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Media Contacts:
Andrew Hughan, CDFW Communications, (916) 201-2958
Jim Milbury, NOAA Fisheries, (562) 980-4006

 

2017 Salmon Forecasts Point to Reduced Fishing Opportunities

Commercial and sport anglers have received unwelcome news on the predicted return of Chinook salmon this year to California waters. State and federal fishery scientists presented updates on the numbers of spawning Chinook and the expected abundance for the upcoming fishing season at the annual Ocean Salmon Information Meeting held in Santa Rosa today.

Forecasts suggest there are 230,700 Sacramento River fall run Chinook adults in the ocean this year, along with 54,200 Klamath River fall run adults. Both forecasts are lower than those of recent years, with the forecast for Klamath fall run being among the lowest on record. Salmon from these runs typically comprise the majority of salmon taken in California’s ocean and inland fisheries.

“With a poor forecast for Klamath fall run and continued concerns over the winter run, California anglers will see reduced Chinook fishing opportunity as compared to last year,” said Brett Kormos, a senior environmental scientist with the California Department of Fish and Wildlife (CDFW).

Chinook that will be harvested in ocean fisheries in 2017 hatched two to four years ago, and were deeply affected by poor river conditions driven by California’s recent drought.

CDFW and federal fish agency partners have expended millions of dollars on measures to minimize the impacts of the drought. These efforts have included trucking the majority of hatchery salmon smolts to acclimation pens in the lower Delta, improving hatchery infrastructure to keep juvenile fish alive under poor water quality conditions and partnering with sport and commercial fishermen to increase smolt survival. Though all of these efforts helped, other environmental factors – such as unusually warm water conditions in the ocean – were beyond human control.

The 2017 forecasts, in addition to information on endangered Sacramento River winter Chinook, will be used over the next two months by fishery managers to set sport and commercial fishing season dates, commercial quotas, and size and bag limits.

Season dates and other regulations will be developed by the Pacific Fishery Management Council and California Fish and Game Commission over the next two months. For more information on the salmon season setting process or general ocean salmon fishing information, please visit the Ocean Salmon Project website or call the salmon fishing hotline at (707) 576-3429.

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Media Contacts:
Kandice Morgenstern, CDFW Ocean Salmon Project, (707) 576-2879

Harry Morse, CDFW Communications, (916) 323-1478