A federal judge in Seattle last week ordered the owners of the Electron diversion dam on the Puyallup River in Washington to breach the dam by this summer because it violates the federal Endangered Species Act.
The initial phase of reservoir drawdowns on the Klamath River – the draining of Iron Gate, Copco, and JC Boyle reservoirs – is now complete. Draining the reservoirs is a critical step on the path to deconstructing the remaining three Klamath River dams that are slated for removal later this year.
A final environmental impact statement by Federal Energy Regulatory Commission staff for the Goldendale Energy Storage Project near the Columbia River’s John Day Dam recommends issuing a license that includes conditions required by the Clean Water Act, and staff-recommended modifications and additional measures submitted by state and federal agencies, Tribes, and non-governmental organizations.
Though agencies and partners have pulled together to support the recovery of endangered Sacramento winter-run Chinook salmon in the last few years, NOAA Fisheries says the species is still in trouble, facing threats from climate change and other factors.
Fish exposed to some pesticides at extremely low concentrations for a brief period of time can demonstrate lasting behavioral changes, with the impact extending to offspring that were never exposed firsthand, a recent study found.
Millions of tons of plastic waste enter the oceans each year. The sun’s ultraviolet light and ocean turbulence break down these plastics into invisible nanoparticles that threaten marine ecosystems.
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.
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.
The pore-like structure of permeable pavements may help protect coho salmon by preventing tire wear particles and related contaminants from entering stormwater runoff, according to a Washington State University study.