With Lake Powell water levels falling, expensive modifications are being considered to keep the 60-year-old Arizona dam generating power.

Gold mining in Glen Canyon reached a zenith from 1883 to 1912; the canyon had been explored by Native Americans and Spanish explorers much earlier.

Emergency crews successfully rescued 31 construction workers trapped underground after a tunnel partially collapsed in Los ...

The $16B Hudson Tunnel Project moves forward with five active sites, new tunnels under the Hudson River, and completion ...

Reel America: Glen Canyon Dam Construction - 1961 This 1961 Information Agency film covered the first years of construction of the Glen Canyon dam on the Colorado River in northern Arizona.

Explore news and insights on climate change, environment policies, global warming and sustainable practices with The New York Times Climate and Environment section.

Get the latest news headlines and top stories from NBCNews.com. Find videos and news articles on the latest stories in the US.