colorado river

U.S. Bureau of Reclamation

The U.S. Bureau of Reclamation projects a 52 percent chance of a water shortage on the Colorado River in 2020. Arizona would bear the brunt of mandatory cutbacks. KNAU’s Melissa Sevigny reports.


AP Photo/John Locher, File

Mexico and the U.S. states of Arizona and Nevada face a better-than-even possibility of getting less water from the Colorado River in 2020 because of a persistent drought, water managers said Wednesday.

USGS

This weekend, managers at Glen Canyon Dam will begin a first-of-its-kind experiment to release water that benefits bugs, which play a vital role in the Colorado River ecosystem. KNAU’s Melissa Sevigny reports.


National Park Service

Scientists have made the first-ever map of how tamarisk beetles have spread into the Grand Canyon from other states. The leaf-eating beetles were introduced to control the invasive trees. But as KNAU’s Melissa Sevigny reports, they weren’t supposed to survive as far south as Arizona.

AP Photo/Julie Jacobson, File

Tension over the drought-stressed Colorado River escalated into a public feud when four U.S. states accused Arizona's largest water provider of manipulating supply and demand, potentially threatening millions of people in the United States and Mexico who rely on the river.

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