The Rio Grande is one of North America's most iconic waterways, flowing for a staggering 1,896 miles and ranking as the fifth-longest river on the continent. While it is most famous for marking much ...

Across the West, we have recently endured the winter that wasn’t. Here on the Western Slope, we worry about the diminishing Colorado River, but we also need to look at rivers on the other side of the ...

Last year, reporter Jack Herrera traveled the length of the Rio Grande basin – from its source in Colorado to the Gulf of ...

See how U.S. rivers look when resized by water flow, revealing the dominance of the Mississippi and the surprisingly thin rivers of the West.

Amazon pledges $100 million for Colorado River conservation, Western reservoirs lose capacity to sediment and the Grand ...

The Colorado River existed in western Colorado 11 million years ago and first exited Grand Canyon around 5.6 million years ago. Now, scientists know more about the path it took to eventually reach the ...

Colorado River drought gets a lot of headlines, but the Rio Grande is having one of its driest years ever. What a recent surge of water for nature says about its future.

Some 10,000 feet up in the San Juan Mountains of southwestern Colorado, we were trying to ford a stream whose waters had not long before been snow clinging to the surrounding peaks. Now the meltwater ...

When Texas became a republic, its western border ran along the Rio Grande all the way to its source, in southern Colorado, and then north to the southern border of Wyoming. When I moved to Santa Fe, ...