U.S. Geological Survey

Lake Powell on the Colorado River has lost nearly seven percent of its storage capacity since it was built in 1963. KNAU’s Melissa Sevigny reports, that’s due to sediment washing into the reservoir.

A new report released Tuesday by the U.S. Geological Survey confirms Lake Powell has lost 4% of its potential storage capacity since 1986.

The city of Flagstaff is hitting pause on the construction of new buildings in partnership with the U.S. Geological Survey because of soaring costs.

The U.S. Geological Survey has released a first-of-its-kind study of uranium levels found in Grand Canyon National Park’s groundwater. It’s part of a long-term effort to try to determine the potential impacts of uranium mining in the area.

Endangered fish in the Colorado River face multiple threats. Their survival is linked to the river’s temperature, which is altered both by climate change…

The Flagstaff Festival of Science begins today and it’s all about astronauts. The theme is To the Moon and Beyond in honor of the 50th anniversary of the…

The National Park Service has transferred 31 bison from Grand Canyon to the InterTribal Buffalo Council who will take to join the herd with the Quapaw…

A group of artists, scientists and geologists is wrapping up a raft trip from Wyoming to Arizona following the route of John Wesley Powell’s historic…