News for Page Lake Powell Arizona

Lake Powell Life News

 Breaking News

Glen Canyon Dam Release Benefits Grand Canyon

November 11
21:17 2013

Anne_Castle_SmallA high-flow experimental release from Glen Canyon Dam to benefit the Grand Canyon is underway as of Monday, November 11, 2013 at 1 P.M. This release is the second release under the science-based protocol adopted in May 2012 for more frequent high-flow experimental releases on the Colorado River. Assistant Secretary of the Interior for Water and Science, Anne Castle, was on hand for the event at the Glen Canyon Dam’s Hayden Visitor Center in Page, Arizona.

Dam managers and resource specialists have determined that the right conditions exist to trigger a high flow that will mobilize the tremendous amount of sediment deposited by the Paria River since late July — nearly 1.5 million metric tons. Using dam operations to create a flood that mimics pre-dam natural flooding in the watershed, the sediment carried and deposited downstream in Grand Canyon National Park will build sandbars that provide key wildlife habitat for animals and fish, create recreational opportunities for the public, and protect archaeological resources.

The high flows will not change the total annual delivery of water from Lake Powell to Lake Mead; they will simply slightly modify the timing of delivery.  The available sediment volume is approximately three times greater than it was in the fall of 2012.

Current Articles