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A Northwest tribe will begin construction of new hatchery rearing facilities for spring chinook salmon as soon as December in a first step to reintroduce the fish to the South Fork Walla Walla and Touchet rivers, both in the Walla Walla River basin.
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The survival of juvenile Snake River salmon and steelhead and their eventual return to spawning streams as adults depends more on the juveniles' size than the way they pass through hydroelectric dams on their migration to the ocean, new research shows.
While the region has been focused on the potential invasion of destructive quagga and zebra mussels from the midwest or southwest United States, another kind of mussel – the “good mussels” – are in decline in Northwest rivers.
Part of a process that was to be decided by the Northwest Power and Conservation Council’s Fish and Wildlife Committee this January will instead take a step back, adding as many as six months to determine the most appropriate goals, objectives and indicators to be included in the Council’s draft 2020 Columbia River Basin Fish and Wildlife Program Addendum.
The vast marine heatwave that spread warm temperatures across the northeast Pacific Ocean late in the summer and fall of 2019 has declined in size and pulled back from the West Coast, possibly reducing its immediate impacts on coastal ecosystems, says NOAA Fisheries.
A lawsuit by environmental and public health groups that challenges approvals for a methanol refinery in Kalama, Wash. by the U.S. Army Corp of Engineers and NOAA Fisheries was filed this week in U.S. District Court for the Western District of Washington in Tacoma.