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The first complete map of tidal wetlands that once made up vast portions of the Pacific coast’s estuaries shows 85 percent of the areas from California to Washington have been lost to development and farmland, and also confirmed the Columbia River’s tidal wetlands are only a quarter of the s…

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BPA has renegotiated an extension of the Columbia Basin Fish Accords for four years with all its partners except the State of Washington, and has released the proposed agreements with states and tribes for public comment.

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A new marine heat wave that’s nearly as big and as warm as the infamous "Blob" that lingered off the Pacific Coast five years ago formed off the coast of Washington this summer, and it has scientists more than a little concerned.

California Trout and Trout Unlimited are asking the U.S. Supreme Court to review an appeals court ruling which found states waive their authority to issue water quality certifications on federal projects after one year, even if the application is withdrawn and later resubmitted.

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Judges for the 9th U.S. Circuit Court of Appeals had plenty of questions for an Environmental Protection Agency attorney arguing to overturn a lower court decision requiring EPA to make plans for resolving water temperature problems in the lower Snake and Columbia rivers.

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Eighty years after the construction of Grand Coulee Dam blocked migratory fish, the Confederated Tribes of the Colville Reservation released 30 adult summer ­Chinook above the largest Columbia River dam.

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On Aug. 26, the 9th U.S. Circuit Court of Appeals will hear oral arguments by the U.S. Environmental ­Protection Agency and five conservation groups over who’s responsible for issuing plans to deal with water temperature pollution in the Snake and Columbia rivers, and how soon those plans sh…

To some, a new report by ECONorthwest demonstrates that if a monetary value is given to restoring the environment, the economic benefits of removing the lower Snake River dams would more than exceed the costs.

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After revising cost estimates, beefing up financial assurances, getting extensions from funding sources and changing its timeline, the Klamath River Renewal Corporation is again asking FERC to transfer the license for four lower Klamath River Dams so that the process to remove them can move …

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The U.S. Army Corps of Engineers is proposing to partner with states and pay 70 percent of the costs to implement a rapid response plan to eradicate zebra and quagga mussels if the invasive species are found in ­Washington, Oregon, Idaho or Montana.

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After more than a year of work, the Northwest Power and Conservation Council on July 19 released a draft 2020 addendum to its 2014 Fish and Wildlife Program and scheduled a series of public hearings throughout the region to get feedback on the document.

Two conservation groups are asking a ­Multnomah County judge to send a water quality ­certification for the Hells Canyon Complex back to the Oregon Department of Environmental Quality with­ ­directions to act within the law.

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Fish biologists working to recover Snake River ­sockeye say this year’s low return—likely to be even smaller than preseason forecasts—is another bump in the endangered salmon’s long road to recovery.

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State and tribal officials in Montana have stepped up efforts to prevent quagga and zebra mussels from ­becoming established in the Columbia Basin, and are ­asking for additional help from other states and the Northwest Power and Conservation Council.

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Led by NOAA Fisheries, a group of stakeholders released their final report outlining a plan for ­recovery of all Columbia Basin salmon and steelhead, which includes provisional numbers needed to recover 24 stocks of Columbia Basin salmon and steelhead to “healthy and harvestable” levels.

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