water

Nevada filed a federal lawsuit Monday challenging the Trump Administration's new rules drastically cutting the state's access to the Colorado River.

The federal decision, which imposes steep cuts on California, Arizona and Nevada, can now be challenged in court.

The federal government will cut back on the amount of water for Arizona, California and Nevada after years of negotiations. They will hit cities in the Phoenix and Tucson areas the hardest.

On Colorado's Upper Arkansas River, a deal is boosting water for fish and rafting

The reservoir, which straddles the Arizona-Nevada border, has suffered due to an imbalance between supply and demand for Colorado River water.

Voluntary afternoon angling pause on the Snake is a first, but likely not a last.

The Interior Department announced plans for sharing water. Further details are coming soon, but big cuts are likely for cities in Phoenix and central Arizona.

After years of stalled negotiations, the Department of the Interior releases final Environmental Impact Statement, covering 10 years of future management for seven states

As federal officials negotiate new rules for sharing the Colorado River's shrinking water supply, scientists are expanding efforts to better measure one of the basin's biggest sources of water loss: evaporation.

The ruling left many wetlands in streams vulnerable in the West, where waters can run dry for portions of the year but are still important for the overall ecosystem.