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
Bridge Canyon Dam Bridge Canyon Dam Bridge Canyon Dam, also called Hualapai Dam, was a proposed dam in the lower Grand Canyon of the Colorado River, in northern Arizona in the United States. It would have been located near Bridge Canyon Rapids in an extremely rugged and isolated portion of the canyon, downstream of Lee's Ferry and at the uppermost end of Lake Mead. First proposed in the 1920s, the project was seriously considered by the U.S. Bureau of Reclamation for a period of over twenty years from the early 1950s to 1968. If built, the dam would have stood high, forming a