Without a modern flood warning system, emergency officials monitor four sensors along the Guadalupe River – including one that was knocked out in the flood.

Lava flows, near mile-thick glaciers and ice age floods layered and carved up this landscape.

After months of stalemate, glimmers of hope have emerged for consensus on a new plan to manage the shrinking Colorado River.

The Colorado River Basin lost an alarming amount of groundwater over the past 20 years, a new study found. Nearly 28 million acre-feet of water has been depleted from the region, nearly the volume ...

If Arizona’s Colorado River water allocation was cut to zero, “we could burn through the available groundwater in 50 years,” Famiglietti said. “We’re talking about decades. That’s scary.

The Colorado River basin has lost a Lake Mead’s worth of water in the last 20 years — and scientists say we’re passing a "critical point" where pumping groundwater will become too expensive.

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 Trump administration ruined what should have been a good spring in the Klamath River Basin. By abruptly laying off federal personnel and freezing payments for already authorized programs and ...

• Red River at Port Royal: Cresting now at 45.49 feet, which will be the third-highest flood crest on record since 1937 (compared to 49.5 ft in 2010 and 48.3 ft in 1975).

The Trump administration ruined what should have been a good spring in the Klamath River basin. By abruptly laying off federal personnel and freezing payments for already authorized programs and ...

The Colorado River Basin lost an alarming amount of groundwater over the past 20 years, a new study found. Nearly 28 million acre-feet of water has been depleted from the region, nearly the volume ...