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A group of tribes that use Colorado River water sent a list of principles to the federal government amid contentious talks about how to share the shrinking supply.

Damage inside Glen Canyon Dam could mean problems with the "river outlet works," a set of small tubes near the bottom of the dam that were originally intended to release excess water when the reservoir is nearing full capacity. The dam allows water to pass through to the Colorado River and Grand Canyon.

A coalition of environmental groups has proposed a set of new rules for managing the Colorado River amid heated negotiations about how to share the water supply, which is shrinking due to climate changed.

More than 100 years ago, a professor in the Mountain West invented a tool and technique to measure the amount of water in a snowpack — a discovery that still lives on to this day.

New research shows less snow is falling in many parts of the U.S., including the Mountain West, a region that relies heavily on snow.

Water from the Shoshone hydropower plant near Glenwood Springs, Colorado, will be purchased by the Colorado River District. It's part of an expensive effort to keep water flowing to the farms, cities and rivers of Western Colorado, and away from fast-growing cities and towns around Denver.

Washington County, Utah — home to the city of St. George — has recently been one of the fastest growing areas in the nation. Local leaders hope a new plan will stretch the county’s water supplies enough to make it through the next two decades.

Many farmers across the Mountain West grow alfalfa, which is dried into hay and fed to beef and dairy cattle. But it requires a lot more water than most crops. Now, researchers are working on new technologies to reduce the amount farmers use. Still, some say allowing them to grow such a thirsty crop in the arid West is the problem.

Nebraska has purchased 90 acres in Colorado as part of a project to send South Platte water across the border.