With declining returns of Pacific lamprey to the Columbia River basin, tribes are turning to artificial propagation, supplementation and translocation to boost lamprey numbers and move the fish back into historic spawning grounds.
Researchers have found enough suitable habitat for more than 32,000 spring/fall chinook salmon to spawn in a section of upper Lake Roosevelt to the border with Canada where current is swifter than it is near Grand Coulee Dam – but that’s only if the fish can make it upstream of Grand Coulee and Chief Joseph dams.
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Monthly estimates of available water supply in the Columbia River basin are continuing to drop after a month of record low rainfall in April.
A lower than average May water supply forecast at Montana’s Libby Dam has reduced the amount of flow augmentation available to encourage spawning of endangered Kootenai River white sturgeon downstream in Idaho.
A new study by researchers from Simon Fraser University and Canada’s Department of Fisheries and Oceans reveals the trade-offs of fish biodiversity--its costs and benefits to mixed-stock fisheries--and points to a potential way to harness the benefits while avoiding costs to fishery performance.
After being put on hold during the four years of the Trump Administration, the Environmental Protection Agency is relaunching its Climate Change Indicators in the United States website for the public.
Only five months into the year, and Washington Department of Fish and Wildlife aquatic invasive watercraft inspection stations staff have already inspected over 5,500 watercraft; 11 of which were fouled with invasive zebra and/or quagga mussels.