Studying the sediment of a mountain river can reveal thousands of years or more of a waterway’s history, including new threats from more frequent wildfires and increased precipitation brought by ...

This story is a part of the ongoing Back 40 series, where HCN reporters look at national trends and their impacts close to home. In October 2014, Paonia Reservoir, a skinny, 3-mile-long basin tucked ...

Clay minerals are a major constituent of the earth's surface and are mainly found in the sediments of lakes, rivers and oceans. The properties of clay and claystone crucially depend on how the tiny ...

Deep pools below waterfalls are popular recreational swimming spots, but sometimes they can be partially or completely filled with sediment. New research showed how and why pools at the base of ...

Blaine County’s commissioners recently approved a stream alteration permit that will allow for the removal of 32,000 cubic ...

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Rapidan Dam’s partial failure sent an estimated 11.6 million cubic yards of sediment downstream. Experts are worried about its ecological impacts and say it could take years to fully understand them.