Efforts to suppress northern pike in reservoirs upstream of Chief Joseph and Grand Coulee dams so far have been successful at keeping the voracious predator from populating waters downstream in what is considered the “anadromous zone” where it is feared the invasive fish would decimate salmon and steelhead runs in the Columbia River basin. Many of those anadromous fish are listed under the federal Endangered Species Act.
After nearly a month of cold weather and heavy snow across the Columbia River basin, giving fisheries managers hope that there would be plenty of streamflow this summer for salmon and steelhead, February has been drier and warmer than normal, leaving the basin water supply at just 75 percent of average, as measured at The Dalles Dam.
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Hatchery-reared salmon show genetic differences from wild populations in only a few generations, but those differences vary among hatcheries.
An important population of listed steelhead in Idaho’s Snake River basin has been getting the help it needs to boost its numbers – removal of barriers, increasing habitat complexity, fewer scouring spring flows and higher and more consistent summer streamflows.
Oregon U.S. District Court Judge Michael Simon Thursday approved a long-term pause in Columbia/Snake River salmon recovery litigation so a tribal-state plan and U.S. government commitments to restore salmon and steelhead in the Columbia River Basin will continue as plann
The Public Power Council this week filed a Petition for Review in the Ninth Circuit Court of Appeals regarding a recently announced U.S. Government agreement that PPC and its members believe inappropriately binds the Bonneville Power Administration to significant actions and commitments that are outside BPA’s congressionally-authorized mission and related obligations.
Fisheries biologists are predicting that a smaller run of upriver spring Chinook salmon will return this year to the Columbia River than had returned last year, and that fewer of those fish will be of natural origin, continuing a years’ long trend, according to a report released last week by Oregon and Washington fish and wildlife agencies.