Dams

The United States must grapple with a legacy of 90,000 dams, many unsafe or unwanted.

U.S. states hope to tap Canada’s network of large dams to meet low-carbon goals, but do better options exist closer to home?

A plan to import hydropower from Canada to Massachusetts begs the question of whether big hydro along with its reservoirs and dams, is green enough to be worth the cost.

After a half-century of failures, the recovery of the Connecticut River ecosystem hangs in the balance. Will authorities finally act to save it?

A river-restoration advocate looks back at her family’s forgotten history to gain new insight into the history — and future — of our country’s rivers.

The innovative project could aid endangered native species — and provide a useful roadmap for other dam-removal efforts.

An indigenous resistance is leading the fight to protect Central America's rivers from an onslaught of dams that threaten the region's rich biodiversity.

The removal of the Edwards Dam on Maine’s Kennebec River helped river conservationists reimagine what’s possible.

A newly discovered plant genus could be wiped out by dams and mining. Could giving it a name save it from extinction?

From California to Maryland, dams are being removed to help fish, improve safety and boost recreation.