After the largest dam removal effort in U.S. history was completed in the Klamath River, salmon are once again swimming in ...

The Panama Canal Authority is reaching out to communities that could be impacted if the Indio River is dammed to make a new ...

The Panama Canal Authority is reaching out to communities that could be impacted if the Indio River is dammed to make a new reservoir ensuring the water supply needed to operate the Panama Canal.

JUNEAU, Alaska -- A flood warning was issued Saturday after an outburst from a glacial lake in Alaska's capital. Suicide ...

The first image shows the dam at an early stage of construction, taken in 2011 when construction first began on the project.

Among them were dams on Washington state’s Elwha River, which flows out of Olympic National Park into the Strait of Juan de Fuca, and Condit Dam on the White Salmon River, a tributary of the ...

"This is now the most severe drought in over 120 years of measurement at the Port of Manaus," said Valmir Mendonca, the port's head of operations, who said the river level is likely to keep ...

The largest dam removal project in U.S. history was completed Wednesday, marking a major victory for tribes in the region who fought for decades to free hundreds of miles of the Klamath River near ...

Over the last month, salmon have gathered in clear pools in the Salmon River as they have returned ... But the recent removal of four dams on the Klamath is bringing new hope among biologists ...

Andrew Van Dam writes the Department of Data column each week for The Washington Post. He has covered economics and wrangled data and graphics for The Post and the Wall Street Journal. He got his ...