for scene 19 of the video " Water Crisis: Healing the Colorado River - part 1" by Rolf Witzsche
here for a larger image
The catchments basin for Lake Powell
The catchments basin for Lake Powell covers 280,000 square kilometers, but most of it is high-elevation arid landscape that offers little in run-off for the high elevation lake that you see here, at 3,700 feet above sea-level.
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Published by Cygni Communications Ltd.
North Vancouver, BC, Canada - (C) in public domain - producer Rolf A. F.