Risks to the Glen Canyon Dam that the resulting flood would scour the bottom few hundred feet of the Grand Canyon, overtop Hoover Dam, and cause severe damage all along the lower Colorado River. In the event of a complete dam failure with Lake Powell at high pool, about of water would surge out of Lake Powell at an initial depth of over . Downstream communities and perhaps every dam along the river, excluding possibly Hoover Dam, as well as riverside lowlands, would be inundated or severely damaged. Located downstream from Glen Canyon Dam are Hoover Dam forming Lake Mead, Davis Dam forming Lake Mohave, Parker
Colorado City, Nevada Nevada. In 1866, Colorado City became the site of two stamp mills, located there for ease of supplying wood to operate its steam driven mechanism. One was the old Colorado Mill brought down the canyon from El Dorado City, and refurbished. The other was the new New Era Mill. The site of Colorado City, and the Colorado River it was adjacent to, was submerged under Lake Mohave following the construction of the Davis Dam in 1951. What remains of Colorado City lies offshore from the site of Nelson's Landing. Colorado City, Nevada Colorado City is now a ghost town, in