A group of researchers near boats on a sandbar along the Colorado River
Detailed Description
A group of USGS and other researchers disembark from river research boats at a sandbar on the Colorado River in Grand Canyon. Photo by David Herasimtschuk, Freshwaters Illustrated.
Sources/Usage
Public Domain.
The USGS Southwest Biological Science Center paid for public domain use of Freshwaters Illustrated photos.
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