Geography

This page feature drone-captured imagery and ground-based photos of Bill Williams River National Wildlife Refuge and Parker Strip, both located along the Colorado River and the Arizona-California border. The Bill...

Grand County officials are searching for ways to prevent harmful algae blooms and weed growth in Grand Lake.

This page features ground-based and aerial photos of Lyman Reservoir, located in Lyman Lake State Park near Springerville, Arizona. By damming the Little Colorado River—a tributary to the Colorado River...

Upper basin states seek added leverage to protect their river shares amid difficult talks with California and the lower basin

After a year of anxious waiting, scientists and researchers who’ve helped build one of the most successful species recovery programs in the nation have gotten a 13-year extension to finish their work.

This page features photos of Parker Dam, located along the Colorado River on the Arizona-California border.   Built between 1934 and 1938 by the Bureau of Reclamation, Parker Dam is...

Environmental correspondent Laura Paskus revisits the Gold King Mine spill and the destructive impact of the toxic orange plume that went flowing down the Animas and San Juan rivers five years ago.

The U.S. Army Corps of Engineers has denied local groups’ request for a public hearing in the case of a marble quarry that violated the Clean Water Act.

Drought and decreased snowpack have left Colorado reservoirs below average capacity levels.

The Maybell Irrigation District and The Nature Conservancy are rehabilitating and modernizing a key headgate and diversion on the Yampa River.