The Trump administration's new rule ends federal protection under the Clean Water Act for many small streams and wetlands. But a scientist argues these are critical parts of river systems.
A new book looks at the Golden State’s history to understand its current water crisis.
Former journalist Nancy Vogel explains how the draft California Water Resilience Portfolio came together and why it’s expected to guide future state decisions
A proposed hydroelectric project on the Little Colorado River shows the tricky trade-offs in transitioning from fossil fuels.
The head of the Colorado River District says any funding must be channeled through the Colorado Water Conservation Board to prevent speculation by private buyers.
For more than 4½ years, state engineers in Colorado have expressed concerns that a conservancy district has not proven there is a need for the water, which would be stored in the proposed White River reservoir and dam project.
Earth's biggest rivers are streams of warm water vapor in the atmosphere that can cause huge rain and snowfall over land. Climate change is making them longer, wetter and stronger.
Degrees of warming: Rising temperatures, shorter winters and a declining snowpack are impacting Aspen’s...
Pitkin County is warming, the number of frost-free days is increasing and snowpack is declining—all of which have myriad impacts on life in the Aspen area.
This year, the first-ever Colorado River Drought Contingency Plan is set to launch, and water officials expect 2020 to bring unprecedented changes to the way the river is run, including cutbacks in water use by some states.
As Aspen evolved from a bucolic high-mountain meadow to an industrial city, pollution began to flow directly into the Roaring Fork River and its tributaries.