Course of the Colorado River into the Virgin River, which ran southward through what is now Overton Arm to join the Colorado River near the now-ghost town of St. Thomas, Nevada. At Hoover Dam, the Colorado turns due south through Black Canyon, a direction it will follow for the remainder of its course to the Gulf of California. It passes under the Mike O'Callaghan–Pat Tillman Memorial Bridge (Hoover Dam Bypass), the highest concrete arch bridge in the world, carrying U.S. Route 93 at a height of above the Colorado River. At the end of Black Canyon the Colorado widens into Lake Mohave, created by the
Gottleuba Dam allowed. Gottleuba Dam The Gottleuba Dam is the second highest dam in Saxony, Germany. It serves as a reservoir for water supply for the town Pirna and provides flood protection, but energy production is small. The dam was built between 1965 and 1974. It is located at the northern foot of the Erzgebirge, southwest of Bad Gottleuba. It dams up the Gottleuba () river. Above the concrete dam is a lookout point. The dam is not accessible to the public. Bathing and leisure sport in the lake is not allowed, since it is for drinking water. Entry around the lake