The Southwest and Rocky Mountain states are reviewing a plan that could split Colorado River water based on actual flows, not ...

Ted Cooke helped Arizona and the Central Arizona Project strike previous deals on the Colorado River. Now he's tasked with shepherding a new one.

They said it’s urgent that Arizona officials resolve their differences over the drought plan and get on board with six other Colorado River Basin states that are moving toward adopting one.

How states dependent on the Colorado River are struggling to strike a long-term agreement Years of overuse combined with rising temperatures and drought have meant less water flows in the Colorado ...

The goal of balancing the groundwater we pump with what we can replenish through natural and human forces is increasingly out of reach in Arizona, a new study finds. The study raises a long list ...