The River District’s mission is to protect, conserve, use and develop the waters within its 15-county area of western Colorado and to safeguard the water to which the state is entitled.

The Colorado River’s Lower Basin states published a proposal Wednesday for the watershed’s long-term operations, just hours after their Upper Basin peers unveiled a rival offer — and as ...

Who is most affected? The states in the Colorado River Basin are split between the upper basin — Wyoming, Colorado, New Mexico and Utah — and the lower basin of Nevada, California and Arizona.

As the seven Colorado River Basin states haggle over the future of water allocations, authors of a new report on groundwater argue that equal attention should be paid to the water beneath our feet.

The Colorado River Basin is divided into two regions: Lower Basin states are Nevada, Arizona and California; Upper Basin states are Colorado, New Mexico, Utah and Wyoming.

The Colorado River Basin supplies drinking water to 40 million people across the lower basin — Arizona, California, Nevada and Mexico — and the upper basin: Colorado, New Mexico, Utah and Wyoming.

The study found groundwater tables in the Lower Colorado River basin, and Arizona in particular, have declined significantly in the last decade.

The Colorado River Basin’s groundwater supplies are dwindling, thanks to a combination of both natural events and human pumping activities, a new study has found.

The seven states that use water from the Colorado River — Arizona, California, and Nevada comprise the Lower Basin — have just over a month left to agree on how the nation’s two largest reservoirs ...

But for the first time in years, representatives from Lower Basin states — Nevada, Arizona, and California — and Upper Basin states — Colorado, New Mexico, Utah, and Wyoming — did not appear on a ...

The Colorado River Basin supplies drinking water to 40 million people across the lower basin — Arizona, California, Nevada and Mexico — and the upper basin: Colorado, New Mexico, Utah and Wyoming.