After months of negotiations, seven Western states along the Colorado River have agreed to water cuts over the next three years to help keep two of the main reservoirs, Lake Mead and Lake Powell, from falling to critically low levels — but…

The Interior Department on Monday said it would review a plan submitted by Arizona, California and Nevada to conserve 3 million acre-feet of Colorado River water over the next three years. The plan is the states’ answer to a federal call for major…