Noun
a large dam built in 1964 on the Colorado River in Arizona
Source: WordNetThe canyon's ecosystem was permanently changed after the construction of the Glen Canyon Dam in 1963. citation Between 2003 and 2011, 2,215 mining claims had been requested that are adjacent to the Canyon, including claims for uranium mines. Source: Internet
Despite a number of high-profile dam removals along America's rivers recently, allowing Glen Canyon Dam to cease operations is no small decision. Source: Internet