Invasive zebra mussels have now infested at least 135 miles of the Colorado River, from the Utah border to Dotsero in western Colorado. And if these tiny pests flow into narrow irrigation pipes and tubes, they threaten to spoil the harvest of Colorado's sweetest crops.

The personhood designation for the river is part of a broader "rights of nature" movement that aims to bestow new legal protections on threatened natural resources around the globe.

The plan is a $99 million bid from water users on Colorado’s West Slope to ensure some of the state’s most valuable water rights, which are currently used to power a hydroelectric power plant, continue to keep a huge volume of water in the river.

Drought and steady demand along the Colorado River are draining the nation's second-largest reservoir. Land that was once submerged is now full of beavers and thriving ecosystems.

Colorado is permitting a Florida-based company to deploy warm-weather cloud seeding in Weld County. It's an attempt to make more rain fall on farm fields.

A group of nonprofits is calling for reductions to water demand, changes at Glen Canyon Dam and more transparent negotiations.

Ted Cooke had been tapped to run the Bureau of Reclamation, but withdrew as some Upper Basin states worried about potential bias.

KUNC's Alex Hager rode nearly 50 miles on the Poudre River trail and learned about the wildlife, people and farms that use its water along the way.

One Colorado city's drinking water got the highest score from judges, who said it tasted smooth and light.

The move, by the Colorado River Indian Tribes in Arizona and California would give rights of nature to the water, marking a historic first.