Lower Colorado River Valley Lower Colorado River Valley The Lower Colorado River Valley ("LCRV") is the river region of the lower Colorado River of the southwestern United States in North America that rises in the Rocky Mountains and has its outlet at the Colorado River Delta in the northern Gulf of California in northwestern Mexico, between the states of Baja California and Sonora. This north–south stretch of the Colorado River forms the border between the U.S. states of California/Arizona and Nevada/Arizona, and between the Mexican states of Baja California/Sonora. It is commonly defined as the region from below Hoover Dam and Lake Mead to
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