— Most of the total water losses occurred in the drier Lower Colorado River basin. It lost 20.7 million acre-feet of ...

The wolves’ territory now spreads from near the Utah border west of Montrose, to the Wyoming border north of Walden, to near ...

Arizona governor declares state of emergency as Greer Fire reaches 15,985 acres, forcing evacuations amid critical weekend ...

The mountains that feed the Colorado River with snowmelt are strikingly dry, with many ranges holding less than 50% of their average snow for this time of year. The low totals could spell trouble for ...

Arizona's water crosses all sorts of boundaries, but leaders must be willing to cross borders to solve problems, experts say.

The Greer Fire had burned roughly 15,985 acres by the start of its fifth day in eastern Arizona. According to ... the fire had crossed the Little Colorado River. On the northeast side, crews ...

A wildfire in eastern Arizona has set over 20,000 acres ablaze ... "critical fire weather" in the White Mountains, Little Colorado River Valley and northeastern plateaus, according to a forecast ...

The Colorado River Basin has lost twice as much groundwater since 2003 as water taken out of its reservoirs, according to a ...

As the Colorado River's giant reservoirs have declined during the last two decades, even larger amounts of water have been ...

New research from Arizona State University professors shows the Lower Colorado River Basin has lost as much groundwater as is contained in Lake Mead over the past 20 years.

Arizona water chief Tom Buschatzke says he is optimistic — and the Trump administration's attitude is one reason — despite ...