Colorado River

Two Flagstaff residents had front-row seats — from the river and the trail — to deadly flash flooding that surged through Grand Canyon National Park.

Three states are being required to cut their water use under a final plan for managing the Colorado River over the next two years, while the four upstream states are being asked to voluntarily conserve water.

Just days after the federal government released new plans for sharing water from the shrinking Colorado River, it is getting sued by Nevada, one of the states impacted by the plan.

The federal government announced the details of its strategy to rein in demand for the Colorado River’s water through 2027 and 2028 and it will mean big cuts for Arizona’s water supply.

The water level at Lake Powell, the United States’ second-largest reservoir, has fallen to a record low, heightening concerns about the ongoing crisis in the Colorado River system.

A new study says the tiny alpine streams that feed rivers like the Colorado are seeing less groundwater-fed streamflow. That could have a cascading effect.

Lake Mead, the largest reservoir in the United States, has plummeted to its lowest water level since it was filled some 90 years ago, another sign of the crisis plaguing the Colorado River system.

Federal officials will not release cool water from Glen Canyon Dam, which would have protected a threatened native fish downstream but put more strain on already struggling hydropower production.

Politicians and water officials say the plan could devastate Arizona's water supply, and pushed the federal government to adopt a counterproposal from the three Lower Basin states.

Arizona, California and Nevada would take less water from the Colorado River under a proposal announced Friday by the federal government to stave off crisis in the beleaguered waterway.