Dry spring weather is causing plants to use more snowmelt, reducing Colorado River streamflow. This explains why runoff ...

For the first time in more than 80 years, the U.S. has denied Mexico's request for water from the Colorado River, escalating ...

River states have weeks remaining to resolve deep divides over how to manage the river for years to come, officials at a ...

A combination of water management practices has contributed to notable groundwater gains in Central Arizona despite the ...

"Liberation Day" is what President Donald Trump is calling the day he announces a new round of tariffs targeting foreign ...