The Lower Monumental lock and dam on the Snake River. (Getty Images) A long-running court battle over how to balance protections for endangered fish with hydropower dams in the Columbia River Basin ...

Nicholas K. Geranios / AP Environmental groups and the State of Oregon are seeking a court injunction to force federal dams on the Columbia River to lower reservoirs and increase the amount of water ...

Add Yahoo as a preferred source to see more of our stories on Google. Environmental groups and the state of Oregon asked a judge Tuesday to OK a suite of changes to dam operations in the Columbia ...

Northwest states, tribes and environmental groups are moving to restart litigation against the federal government over its hydroelectric dam operations in the Columbia River Basin that have harmed ...

Environmental groups and others want to see hydropower operations changed to favor fish survival. Utility groups warn of problems for the power grid A long-running court battle over how to balance ...