Water flow experiment begins at Grand Canyon - Article Photos 1/4

The high-flow release of water into the Colorado River from bypass tubes at Glen Canyon Dam in Page, Ariz., Monday Nov. 19, 2012 begins as Interior Secretary Ken Salazar opens the valves. Federal water managers started a 5-day high-flow experimental release to help restore the Grand Canyon's ecosystem. (AP Photo/The Arizona Republic,Rob Schumacher) MARICOPA COUNTY OUT; MAGS OUT; NO SALES