Researchers say drought, sea level rise, severe storms and dredging are partly to blame for the increased in frequency and ...

Ongoing drought continues to strain the water supply from the Colorado River, but some Arizona agencies are finding new ways ...

After running dry, the Santa Cruz River in southern Arizona is coming back to life. But restoration still faces challenges.

After running dry, the Santa Cruz River in southern Arizona is coming back to life. But restoration still faces challenges.

Millions of people across 15 U.S. states are under flood warnings after widespread rainfall overwhelmed rivers, streams and roads last week.