Are salmon endangered worldwide?
No, salmon are not endangered worldwide. For example, most populations in Alaska are healthy. Some populations in the Pacific Northwest are much healthier than others. These healthy populations usually occupy protected habitats such as the Hanford Reach on the Columbia River and streams of Olympic National Park.
Learn more: Questions and Answers about Salmon
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How do salmon know where their home is when they return from the ocean?
How far do salmon travel?
Why do salmon change color and die after they spawn?
How long do salmon usually live?
When can salmon be seen migrating to their spawning area?
Why do salmon eggs come in different colors?
Why are there so few salmon left?
How many species of salmon are there and how large can they get?
Where are salmon most endangered?
What are the differences between endangered, threatened, imperiled, and at-risk species?
Why do animals and plants become endangered?
Skagit River coho salmon life history model—Users’ guide
Natural resource management is conducted in the context of multiple anthropogenic stressors and is further challenged owing to changing climate. Experiments to determine the effects of climate change on complex ecological systems are nearly impossible. However, using a simulation model to synthesize current understanding of key ecological...
Woodward, Andrea; Kirby, Grant; Morris, Scott
Survival of juvenile chinook salmon and coho salmon in the Roza Dam fish bypass and in downstream reaches of the Yakima River, Washington, 2016
Estimates of juvenile salmon survival are important data for fishery managers in the Yakima River Basin. Radiotelemetry studies during 2012–14 showed that tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) that passed through the fish bypass at Roza Dam had lower survival than fish that passed through other routes at the dam. That study...
Kock, Tobias J.; Perry, Russell W.; Hansen, Amy C.
Behavior patterns and fates of adult steelhead, Chinook salmon, and coho salmon released into the upper Cowlitz River Basin, 2005–09 and 2012, Washington
A multiyear radiotelemetry evaluation was conducted to monitor adult steelhead (Oncorhynchus mykiss), Chinook salmon (O. tshawytscha), and coho salmon (O. kisutch) behavior and movement patterns in the upper Cowlitz River Basin. Volitional passage to this area was eliminated by dam construction in the mid-1960s, and a reintroduction program began...
Kock, Tobias J.; Ekstrom, Brian K.; Liedtke, Theresa L.; Serl, John D.; Kohn, Mike
Behavior and dam passage of juvenile Chinook salmon at Cougar Reservoir and Dam, Oregon, March 2012 - February 2013
The movements and dam passage of individual juvenile Chinook salmon (Oncorhynchus tshawytscha) were studied at Cougar Reservoir and Dam, near Springfield, Oregon, during 2012 and 2013. Cougar Dam is a high-head flood-control reservoir with a temperature control tower as its outlet enabling selective withdrawals of water at various depths to...
Beeman, John W.; Hansel, Hal C.; Hansen, Amy C.; Evans, Scott D.; Haner, Philip V.; Hatton, Tyson; Kofoot, Eric E.; Sprando, Jamie M.; Smith, Collin
Seventy-five years of science—The U.S. Geological Survey’s Western Fisheries Research Center
As of January 2010, 75 years have elapsed since Dr. Frederic Fish initiated the pioneering research program that would evolve into today’s Western Fisheries Research Center (WFRC). Fish began his research working alone in the basement of the recently opened Fisheries Biological Laboratory on Lake Union in Seattle, Washington. WFRC’s research began...
Wedemeyer, Gary A.
Impacts of Low-Flow and Stream-Temperature Changes on Endangered Atlantic Salmon - Current Research
Recent climate studies in New England and the northeastern United States have shown evidence of physical changes over time, including trends toward earlier snowmelt runoff, decreasing river ice, and increasing spring water temperatures. A U.S. Geological Survey (USGS) study funded by the National Global Warming and Wildlife Science Center will be...
Dudley, Robert W.; Hodgkins, Glenn A.; Letcher, Benjamin H.
Water managers explore new strategies to protect fish in California’s Bay Delta
The water in the Delta arrives primarily from the Sacramento and San Joaquin Rivers, supplying water for more than 22 million people. This water source supports California’s trillion-dollar economy—the sixth largest in the world—and its $27 billion agricultural industry.
In Hot Water: Climate Change is Affecting North American Fish
Climate change is already affecting inland fish across North America -- including some fish that are popular with anglers. Scientists are seeing a variety of changes in how inland fish reproduce, grow and where they can live.
Community flood protection may also help endangered salmon to thrive
Building a river setback levee to reduce the risk of flood for a community may also help endangered fish species to thrive, according to the results of a novel computer model reported by the U.S. Geological Survey.
Endangered Salmon Population Monitored with eDNA for First Time
CORVALLIS, Ore. — Scientists from the U.S. Geological Survey and Washington State University have discovered that endangered Chinook salmon can be detected accurately from DNA they release into the environment. The results are part of a special issue of the journal Biological Conservation on use of environmental DNA to inform conservation and management of aquatic species.
New Method Monitors Riverbed and Flows to Protect Spawning Salmon
USGS scientists took high-tech sensors typically found in devices such as smart phones and embedded them into a new method to monitor riverbed movements that can help protect spawning habitat for endangered salmon. Developed in cooperation with Seattle Public Utilities for the Cedar River, the new method is published in the Journal of Hydrology.
Wild Atlantic Salmon Found in New York's Salmon River
Scientists recently discovered wild young Atlantic salmon in New York's Salmon River. This is the first time in more than a century that salmon produced naturally in the wild have been found in what was once New York's premier salmon stream. Forty-one wild Atlantic salmon were collected in June and July. All of the salmon were under one year old and ranged in length from about 2 – 2.5 inches.
Animal Wastes or Sewage Contribute to Salmon Migration Barrier in San Joaquin River
Migrating fall-run Chinook salmon can hit a stretch of the San Joaquin River in Central California with oxygen levels so low, the fish are forced to either wait around until conditions improve or to go elsewhere to spawn, thereby negatively affecting their spawning success.
Removal of Obsolete Forest Roads Can Reduce Erosion and Sediment That Impair Salmon-bearing Streams
Removing abandoned forest roads and restoring the natural characteristics of slopes and stream channels in the Redwood National and State Parks in northern California have substantially reduced the delivery of sediment to salmon-bearing streams, according to a research geologist with the U.S. Geological Survey.
Brown bears (Ursus arctos) and Chum (Salmon Oncorhynchus)
Bear predation on salmon can be high in many Alaskan rivers. Brown bears Ursus arctos and Chum Salmon Oncorhynchus keta are managed concurrently in McNeil River State Game Sanctuary by Alaska Dept. of Fish and Game to benefit the salmon, bears, commercial fishers, and provide unparalleled close-up bear viewing and photography opportunities for the public.
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Radio-tagged Kasilof River coho salmon
Radio tagged coho salmon from the Kasilof River in Alaska
Chinook Salmon
Chinook Salmon. Photograph courtesy of Michael Humling, U.S. Fish and Wildlife Service
Chinook Salmon
Chinook Salmon. Photograph courtesy of Michael Humling, U.S. Fish and Wildlife Service
An Alaskan Sockeye Salmon. USGS photo gallery. BLM photo.
A Spawning Coho Salmon
Coho salmon fins just above water surface. Female coho select breeding sties based on specific characteristics that offer protection and desired habitat for juveniles. Photo courtesy of Steven Clark, BLM
Drano Lake Sockeye Salmon
Adult Sockeye Salmon in Drano Lake, WA on July 15th and 16th 2015.
Young Atlantic Salmon
These two-day old Atlantic salmon were hatched at the USGS Tunison Lab and will eventually be released in Lake Ontario tributaries.
A new, sophisticated fish rearing facility in Cortland, N.Y. will help restore Atlantic salmon, bloater, and lake herring to Lake Ontario, strengthening the local ecosystem and economy.
To restore the population, young Atlantic
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USGS Salmon Disease Research
The U.S. Geological Survey’s Western Fisheries Research Center in Seattle, Washington is a state-of-the-art laboratory operating on the cutting edge of fish science. Work at the lab falls into three broad categories, ecosystem studies, studies of invasive species, and studies of disease in fish. Recent public alarm about the possible discovery of the Infectious Salmon