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Salmon redds and carcasses were surveyed on the mainstem Trinity River, California from Lewiston Dam to the confluence with the Klamath River, during the 2020–2023 spawning seasons to map spawning abundance and distribution, evaluate pre-spawn mortality, and characterize redds by species and...
In the Trinity River, Chinook Salmon population sizes have been hypothesized to be limited by the availability of age-0 rearing habitat. Restoring rearing habitat is the focus of a large-scale effort that has been ongoing for the last two decades through streamflow management, channel...
The U.S. Fish and Wildlife Service began extensively monitoring water temperature in the Klamath Basin in 2001 due to growing interest and concern over the effects of elevated water temperatures, particularly in relationship to Pacific salmonids. This report summarizes the results of water...