1384p-10 Meanwhile, all ships use the twin 5-step ship locks. As the water level rises toward 508 feet (155 m.) above sea level, or 361 feet above the pre-dam level...jpg Previous  Next
1384p-10 Meanwhile, all ships use the twin 5-step ship locks. As the water level rises toward 508 feet (155 m.) above sea level, or 361 feet above the pre-dam level..