Colorado River Watershed

It's a tale of two rivers: The Verde, which flows south from near Flagstaff, Ariz. to metro Phoenix, and the San Pedro, which begins in Mexico and flows…

Charismatic is hardly the best word to describe the humpback chub, a fish with a frowny eel face jammed onto a sportfish body in a way that suggests…

Use it or lose it.That saying is at the heart of how access to water is managed in the western U.S. Laws that govern water in more arid states, like…

Central Arizona has been booming -- more people, more houses, more need for water. There's also a long-term drought, and less water to buy from the…

For five years, Zay Lopez tended vegetables, hayfields and cornfields, chickens, and a small flock of sheep here on the western edge of Colorado's Grand…

Coal-fired power plants are closing, or being given firm deadlines for closure, across the country. In the Western states that make up the overallocated…

A new federal program hopes to fill in knowledge gaps on how water moves through the headwaters of arguably the West’s most important drinking and…

Much of the Santa Cruz River is a dry, desert wash, only flowing after heavy monsoon rains. As Tucson Water hydrologist Dick Thompson and I walk along the…

Snow swamped mountains across the U.S. West last winter, leaving enough to thrill skiers into the summer, swelling rivers and streams when it melted, and…

A plan to address a shrinking supply of water on a river that serves 40 million people in the U.S. West is headed to President Donald Trump.The U.S. House…