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Chris Black near a beaver dam analog on his southwest Idaho property.

SPOKANE — More work needs to be done to determine the cost and impact on the region's power grid in the next 30 to 50 years if four dams on the Snake River are removed, experts say.

At center, Rob Petty, Bonneville Power Administration power forecasting and planning manager, makes a point during the Washington Democrats Ag…

An excavator breaks a log jam in April 2013 at the Three Mile Dam on the Umatilla River north of Hermiston, Ore. The Oregon Water Resources De…

Dam owners would be subject to civil penalties for failing to maintain the structures under an overhaul of Oregon’s dam safety laws that’s passed the Legislature.

JOSEPH, Ore. — With $16 million earmarked in Gov. Kate Brown’s budget to rebuild the Wallowa Lake Dam, irrigators are preparing for its reconstruction in August 2020.