More than 500 threatened chum salmon were counted at the end of November on spawning grounds downstream of Bonneville Dam in the Ives/Pierce island area on the Columbia’s north shore. Although only halfway through the spawning season for these salmon, an anadromous fish expert with the Washington Department of Fish and Wildlife says this year’s tally could end up being higher than the last five-year average.
Idaho Power will soon drop a lawsuit it filed in U.S. District Court in Idaho in June 2018 aimed at forcing the U.S. Environmental Protection Agency to set a two-week water quality standard for fall chinook that spawn downstream of the utility’s Hells Canyon Complex of three dams on the Snake River.
As a result of a late November settlement, the U.S. Army Corps of Engineers will reduce inadvertent oil discharges from Chief Joseph Dam, downstream of Grand Coulee Dam, and it also will apply for a National Pollutant Discharge Elimination System permit from the U.S. Environmental Protection Agency.
The way the U.S. Army Corps of Engineers is proposing to operate its Willamette River dams would likely jeopardize chinook and steelhead in the river, according to NOAA Fisheries. Both species are listed as threatened under the federal Endangered Species Act.
A fish culturally important to the Kootenai Tribe of Idaho is making a comeback with an abundance of some 60,000 fish, allowing harvest of the fish in January -- 25 years after the last burbot were harvested in the transboundary sections of the Kootenai River in northern Idaho and southern British Columbia.
The Columbia-Snake River Irrigators have prepared a “Risk Mitigation Response Alternative” that would protect “Irrigation Sector assets from the adverse economic impacts that would be caused by Lower Snake River dam breaching and project pool drawdowns.”
Two of the scientists who reviewed the phase 1 report that assesses the feasibility of reintroducing salmon and steelhead upstream of Chief Joseph and Grand Coulee dams told the Northwest Power and Conservation Council Wednesday that a cost analysis should be incorporated early in the process and in a stepwise fashion if the effort is to move forward.
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.
Although operations at Bonneville Dam that sets a tailwater elevation designed to provide ideal spawning conditions for threatened Columbia River chum salmon downstream of the dam began Monday, few chum have yet to hear the call.