"The Jawbone Canyon siphon, pictured above in a photograph from the California Historical Society Collection at the USC Libraries, is among the aqueduct’s most impressive features. Workers assembled the massive steel pipe (measuring 8,095 feet in length and up to ten feet in diameter) in 36-foot, 25-ton segments, each hauled to the work site by a team of 52 mules. Water falls through the tube, 850 feet to the canyon floor, generating hydraulic pressure that then forces it up and over the opposite ridge without the aid of a pump."