Arizona relies on the Colorado River to feed the nation and keep major cities humming. But the state could be in line for a lot less water soon.

River Trail, Plateau Point Trail and Silver Bridge will remain closed until Oct. 1, according to the National Park Service.

Grand Canyon National Park has updated its construction schedule that will see reopenings and several closures throughout the ...

The seven states that use water from the Colorado River – Arizona, California and Nevada comprise the Lower Basin – have just ...

What influence does the Colorado River have on resupplying Arizona’s groundwater shortage over the last few years? This is what a recent study published in Communications Earth & Environment hopes to ...

Peter McBride From its source high in the Rocky Mountains, the Colorado River channels water south ... And boaters still roar across Nevada and Arizona’s Lake Mead, 110 miles long and formed ...

If the Colorado River states don’t submit a comprehensive water management plan by May, the federal government may impose its own standards that could force states to further cut their use. The seven ...

A new study gives Arizona and Nevada high marks for their reuse of treated sewage effluent as a way to reduce Colorado River use, but says the other five river basin states have a long way to go.