Several different projects will target issues like managing low water flows, restoring ecosystems and creating more efficient ...

The 336-mile Central Arizona Project Canal delivers water from the Colorado River on Arizona’s western border to the Phoenix and Tucson areas. The project provides water to 6 million Arizonans — ...

Planning for a new interstate through southern Arizona has been put on hold. 280 miles of highway between Nogales and Wickenburg expanding Interstate 11 had been proposed by federal and state ...