Article Photos: Water flow experiment begins at Grand Canyon 4/4

  Interior Secretary Ken Salazar turned the valves that started the high-flow release of water into the Colorado River from bypass tubes at Glen Canyon Dam in Page, Ariz., Monday Nov. 19, 2012. Federal water managers began 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