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The Supreme Court has ruled against the Navajo Nation in a case centered on the tribe’s rights to the drying Colorado River. The tribe claimed it was the federal government’s legal duty to help figure out their future water needs, and aid them in using their rights. But in a 5-4 decision, the justices said an 1868 treaty included no such promises.
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After a Colorado River conservation agreement between California, Arizona and Nevada, states and tribes are turning their attention to a new round of pre-2026 negotiations.
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The Yampa River is full of snowmelt on its way to the Colorado River, bringing temporary relief for farms, fish and millions of people in the Southwest.
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Leaders from three states along the shrinking Colorado River say they are ready to start taking less water from it. In a proposal announced Monday, water users and policymakers in California, Arizona and Nevada committed to reducing their take of the river until the end of 2026, when an existing set of management rules expires.
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The nation's second-largest reservoir has been shrinking as drought and steady demand strain the Colorado River. Lake Powell water levels are low, but canyons and ecosystems are emerging.
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Scientists in Colorado are studying snow sublimation, in which snow evaporates before can melt into water. The new data collected will help water managers across the West understand Colorado River supply.
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The Bureau of Reclamation is releasing a "high-flow experiment" from Glen Canyon Dam after forecasts showed a boost to Lake Powell.
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Cuts to water use along the Colorado River could be spread evenly across some southwestern states, or follow the more than a century-old priority system that currently governs water management. Those are two alternatives federal officials are considering to keep hydropower generation going at the nation’s largest reservoirs according to a draft plan released Tuesday.
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The Gila River Indian Community is among the first recipients of payouts from a federal program designed to incentivize water conservation.
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Two classrooms in Colorado are learning about water by connecting pen pals between Basalt and Aurora.