Hydropower was long the country’s leading source of renewable energy, but it was passed in 2019 by wind and in 2025 by utility-scale solar. It’s still significant, though, with 5.6 percent of U.S.

As the gates leading from Sam Rayburn Lake open, the water rushes towards the Kaplan turbines some 100’ below. The river begins to rise and swell below the dam as the ground below your feet vibrates ...

The proposal put forward by Arizona, California and Nevada would temporarily cut use of Colorado River water in exchange for $1.2 billion in payments from the federal government. Colorado River states ...

In 1880, a water-powered turbine generated its first spark of electricity. It powered a theater and storefront in Grand Rapids, Michigan. By 1893, the first commercial hydropower plant was operating ...

Hundreds of miles from China’s populous coastline, a sharp bend in a remote Himalayan river is set to become the centerpiece of one of the country’s most ambitious – and controversial – infrastructure ...

The nation's second-largest reservoir, Lake Powell, is continuing to dry up, placing water supplies and power generation in the West in potentially dire straits. Lake Powell is an artificial lake in ...

The rain and snow that have drenched California and much of the American West over the last few months — at least relative to some of the hellishly dry years we’ve gotten recently — are a blessing not ...