Course of the Colorado River Davis Dam in Pyramid Canyon above Laughlin, Nevada, where a bridge carries NV 163 (Laughlin Highway)/AZ 95 over the Colorado River. Prior to the completion of the Hoover Dam Bypass project in 2010, this bridge was the main crossing for freight traffic between Arizona and Nevada as trucks were not allowed over Hoover Dam for security reasons after the September 11, 2001 attacks. The Colorado then passes by Bullhead City, Arizona and Fort Mohave, Arizona and the Fort Mojave Reservation. The Colorado forms the border of California to the west and Arizona to the east for most of its course
Colorado City, Nevada Colorado City, Nevada Colorado City is now a ghost town, in Clark County, Nevada, located under Lake Mohave at the mouth of El Dorado Canyon. Colorado City was a mining camp in the Colorado Mining District (New Mexico Territory) and a steamboat landing at the mouth of the El Dorado Canyon on the Colorado River, for shipments via steamboats of the Colorado River. Founded in 1861, Colorado City, was at first located in New Mexico Territory, until 1863, when it became part of Mohave County of Arizona Territory. In 1867 it became part of Lincoln County in the state of