In 1869, one-armed Civil War veteran John Wesley Powell set out to map the Colorado River, but his dangerous expedition became the first to reveal the immens…

Grand Canyon is today regarded as among the world's major natural phenomena and receives millions of tourists each year.
Circle of Blue

The Colorado River Water Crisis

The Colorado River stretches more than 1,400 miles from its headwaters in the Rocky Mountains of Wyoming and Colorado to the Gulf of California in Mexico. Its basin spans seven U.S. states — Wyoming, ...
Grist

New study shows huge groundwater losses along Colorado River

The Colorado River basin has lost huge volumes of groundwater over the past two decades according to a new report from researchers at Arizona State University. Researchers used data from NASA ...