PHOENIX (AP) — U.S. Interior Secretary Sally Jewell and other officials marked the 50th anniversary of power generation by Glen Canyon Dam, a structure that helped usher in a new era in the Southwest. Glen Canyon Dam, situated near the Arizona-Utah border, is a source of water and power for seven states in a region prone to drought. Jewell told the crowd that the dam is not without its controversy but was an engineering feat that was economically valuable to the future of the country.Read more on NewsOK.com