U.S. Rep. Marie Gluesenkamp Perez tours the Yaquina dredging vessel as the crews works along the Columbia River in August. “So many of our industries rely on these waterways and this dredging ...

The Columbia River Treaty between the U.S. and Canada governs both hydroelectric power and flood control. (Amanda Cowan/The Columbian files) A stopgap update to the 60-year-old Columbia River ...

‘Functional flows’ are expected to be the hallmark of the new Columbia River Treaty and its agreement-in-principle in order to prevent dramatic drops on the river in the West ...

Oregon environmental regulators gave a key stamp of approval to a proposed $2.5 billion biofuel refinery along the Columbia River despite continued opposition from environmental groups and tribes ...

A stopgap update to the 60-year-old Columbia River Treaty between the U.S. and Canada upends flood control and hydropower across the river basin. The U.S. Department of State announced the ...

Climate Lab is a Seattle Times initiative that explores the effects of climate change in the Pacific Northwest and beyond. The project is funded in part by The Bullitt Foundation, Jim and Birte ...

SEATTLE — The U.S. Environmental Protection Agency (EPA) announced on Friday that it has added the Upper Columbia River Site in northeast Washington to the Superfund National Priorities List (NPL).

Citizens of the four Columbia River treaty tribes gathered at the base of Willamette Falls in search of Pacific lamprey to harvest on July 12, 2024. (Photo by Nika ...

Federal officials on Friday declared portions of the Upper Columbia River a Superfund site after decades of studying, debating and litigating over the pollution that primarily washed downriver ...

Average salmon and steelhead counts in the Columbia River Basin over the last decade are still well below officials’ goal of 5 million fish per year. From 2014 to 2023, just 2.3 million salmon ...