Rare Look Inside Underground Aqueduct in San Jacinto Built Almost 100 Years Ago Entirely by Hand
Eyewitness News was given a rare look inside the engineering marvel, which was the largest public works project in Southern California during the Great Depression, while it’s shut down for its annual maintenance. It’s the final leg of the massive Colorado River Aqueduct: the 13-mile-long San Jacinto tunnel, bringing up to 1,700 cubic feet of water per second underneath one of Southern California’s tallest mountains.