colorado river

NASA

NASA satellite imagery shows a more detailed picture of how drought has shrunk water levels and exposed the bottom of the Colorado River in the lower Grand Canyon.


U.S. Geological Survey Photographic Collection

Writer Wallace Stegner once claimed that exploration of the West by European-Americans began with Lewis and Clark and ended with Almon Thompson.


Melissa Sevigny

The Grand Canyon is running short on sand. Sediment that once washed down the Colorado River to form beaches is now trapped behind Glen Canyon Dam. For two decades river managers have released artificial floods to rebuild the beaches … but it’s not clear if the river has enough sand for these experiments to work in the long run. That’s what scientists want to find out.

USFWS

Three types of chub in the Colorado River watershed may actually be the same species of fish. The finding raises questions about their protections under the federal Endangered Species Act.


Pete McBride

Fewer than three dozen people have ever hiked the entire 800-mile length of the Grand Canyon. Two journalists on assignment for National Geographic completed the journey last month and have now been nominated as the magazine’s 2017 Adventurers of the Year. Arizona Public Radio’s Ryan Heinsius reports. 


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