On July 6, the California Department of Fish and Wildlife published an update on the status of federally and state protected Sacramento River winter-run Chinook salmon that warns “it is possible that nearly all in-river juveniles will not survive this season” as the cold water pool in Lake Shasta is depleted earlier than modeled because of increased downstream water deliveries during the hot weather.
The winter-run Chinook salmon is listed as “endangered” under both the federal Endangered Species Act (ESA) and the California Endangered Species Act (CESA). The once abundant sub-species of salmon declined from a high of 117,000 in 1969 to 200 fish in 1991.
Previous reports from the CDFW documented a large mass of winter-run Chinook in stressed conditions below Keswick Dam, including adult fish dying before spawning in the relatively warm water conditions.
The update states:
“7-6-21- Continued hot weather above 100 degrees for periods in late May, early June and past two weeks continuously will lead to depletion of cold water pool in Shasta Lake sooner than modeled earlier in season. This hot weather is leading to more demand downstream for water (flows from Keswick from 8,500 to 9,250 on July 4th). Previously modeled season long cold water availability scenarios used steady flows in the 7500 cfs range from Keswick. Those earlier scenarios had very high expected juvenile mortality due to warm water later in Aug-Oct that would be lethal to incubating eggs and alevins in the gravel. This persistent heat dome over the West Coast will likely result in earlier loss of ability to provide cool water and subsequently it is possible that nearly all in-river juveniles will not survive this season. Counts of carcasses continue to indicate a large run of winter-run this year. Unspawned fresh females for the season are 71 with an overall percentage of 12.3% of all fresh females this season were unspawned.”
The link to the update is here: https://www.calfish.org/ProgramsData/ConservationandManagement/CentralValleyMonitoring/CDFWUpperSacRiverBasinSalmonidMonitoring.aspx)
While the CDFW attributes the potential loss of nearly all juvenile winter-run chinook this year to the hot weather and the “persistent heat dome,” representatives of fishing and environmental groups attribute the dismal situation of the winter Chinook to state and federal mismanagement of water.
“This is EXACTLY what we warned the State Water Resources Control Board (SWRCB) about when we spoke on the precarious condition of Sacramento River winter run at their meeting in April,” said Mike Conroy, Executive Director of the Pacific Coast Federation of Fishermen’s Associations. “While I appreciate the deflection and trying to blame the weather - this is most assuredly NOT about hot weather.”
“Our government officials have generally been failing to provide adequate conditions (or even meet their own plan) since spawning began. This is negligence and incompetence by those in power,” stated Conroy.
Likewise, John McManus, President of the Golden State Salmon Association, blamed government inaction for this looming disaster.
"Californians should be alerted that the extinction of a native salmon run is underway right now as a result of government inaction to stop it,” said McManus. “State and federal water managers have apparently decided it's politically inconvenient to reroute short water supplies to prevent extinction if it means a few less acres of crops.”
“We're losing winter run salmon right now and the fall run salmon that supply the sport and commercial fisheries will be decimated too. Californians who care about the environment need to hold government officials accountable for allowing the loss of the state's natural resources on their watch,” said McManus.
In a San Francisco Baykeeper action alert on May 21, Baykeeper Senior Scientist Jon Rosenfield warned, "Right now, Shasta Reservoir still has enough cold water to protect the winter and fall runs of Chinook Salmon from high water temperature. But instead, the Bureau of Reclamation is planning to deliver that water to Central Valley agribusiness. And the State Water Board, which has the authority and obligation to prevent the Bureau from squandering the cold water, is failing (yet again) to act meaningfully to stop this disaster."
Despite the winter run’s protected status and the warnings by Rosenfeld and other scientists, the State Water Resources Control Board continues to approve the delivery of millions of acre-feet of water to state and federal water contractors during a record drought.
And despite the winter run’s protected status under state and federal laws, the Sacramento River mainstem winter run Chinook salmon escapement (1970-1974 v. 2015-2019) has declined 91.0 percent, according to CDFW data.
On June 1, fishing and environmental groups submitted an emergency water management plan to the State Water Resources Control Board as an alternative to the controversial Bureau of Reclamation water temperature management plan approved this spring, but the Board continues to support the Bureau’s plan.
Drafted by the California Sportfishing Protection Alliance (CSPA), the California Water Impact Network (CWIN), and Save California Salmon (SCS), the groups’ plan would significantly reduce salmon-killing high temperature water releases from Shasta and Trinity reservoirs. It would also protect carryover storage in the event of another dry year.
“The plan will protect Chinook salmon spawning and rearing in the Sacramento, Trinity and lower Klamath Rivers. The plan will also maintain an extra half-million acre-feet of water in Shasta and Trinity reservoirs should next year also be dry,” according to the groups.
This plan would reduce Sacramento River water temperatures and significantly increase salmon survival in the following ways:
1. Limit June-through-October releases from Shasta-Keswick dams to 5,000 cfs (cubic feet per second), using Shasta’s cold-water pool to maintain Keswick releases at less than 54°F.
2. Eliminate June-through-October use of the Spring Creek power tunnel between Whiskeytown and Keswick reservoirs.
3. Maintain June-through-October flows of 300 cfs to Whiskeytown Reservoir through the Carr powerhouse, increase June-October releases to Clear Creek to 300 cfs, and increase June- October releases from Trinity-Lewiston dams to the lower Trinity River to 800-870 cfs.
However, Reclamation hasn’t even followed its own temperature management plan regarding releases to the Sacramento River, according to Bill Jennings, Chairman and Executive Director of the California Sportfishing Protection Alliance.
“Under the Bureau temperature management plan, Keswick Dam releases in July would be 7500 cfs and the storage in Lake Shasta was projected to be 1.25 million acre-feet of water,” said Jennings. “The reality is that right now the Bureau of Reclamation is releasing 9600 cfs out of Keswick Dam and projected storage is now only 1.1 million acre-feet of water. But at Wilkins Slough above the Sacramento River’s confluence with the Feather, flows are now 4500 cfs, so 5000 cfs are disappearing on the Sacramento between Keswick Dam and Wilkins Slough. The difference is being diverted from the river.”
“The bottom line is we’re going to run out of cold water in Lake Shasta and temperatures will be too warm for salmon to survive. Another dry or critically dry year will take California into uncharted territory,” warned Jennings.
Most recently, on June 30, a coalition of Delta-based groups — Restore the Delta, Little Manila Rising and Save California Salmon — sent a formal Petition for Reconsideration to the State Water Board opposing the Board’s June 1 order to relax water quality standards for Delta operations of the Central Valley Project and the State Water Project. The Temporary Urgency Change Order (TUCO) was issued by the Water Board on June 1, 2021.
The coalition’s petition reveals that 4.5 million acre-feet of water will be delivered to state and federal water contractors (including about 10 percent for Central Valley wildlife refuges), based on Water Board information. The Board’s action will only add another 3 percent in water savings to put toward protecting salmon and the Delta, “a miserly allocation,” said the petition.