Geography

This map depicts data from the National Drought Mitigation Center. Drought intensity categories are based on numerous indicators and local reports from more than 350 expert observers around the...

With population growth around Denver prompting fierce competition for water, investors want to import a new supply from the San Luis Valley, but many farmers and ranchers who depend...

Once criticized for being a profligate user of water, fast-growing Phoenix has taken some major steps — including banking water in underground reservoirs, slashing per-capita use, and recycling wastewater — in anticipation of the day when the flow from the Colorado River ends.

Low levels and warming waters threaten to increase invasive species in the Colorado River.

A cyberattack in Florida has shown that outdated water control technologies have become more exposed to hacking.

Colorado's Pitkin County is grappling with higher temperatures, declining streamflows and drier soils caused by climate change.

For more than 4½ years, state engineers in Colorado have expressed concerns that a conservancy district has not proven there is a need for the water, which would be stored in the proposed White River reservoir and dam project.

More releases to prop up Lake Powell could be coming

Due to budget shortfalls, Vail Resorts has pulled this winter’s funding for its cloud seeding program, potentially reducing the amount of water flowing down the Colorado River this spring.

Tree rings can tell a story. Wide bands signal a wet period, while narrow ones show a drought. Whole ecosystems can be encoded in trees. In Western Colorado, scientists...