Glen Canyon Dam, substation (left) and bridge (in front of the dam) as seen from the south, near Page, Arizona. Image courtesy of Adbar, CC BY-SA 3.0.
The U.S. Bureau of Reclamation recently made an unprecedented move to protect water levels in Lake Powell on the Utah-Arizona border, announcing it would delay a water release that normally goes to Arizona, California and Nevada.
In order to keep levels in the lake high enough to...
