with other “little” projects like Hoover Dam. In the same offices where early


Reclamation engineers once worked (only then without air conditioning and other conveniences), giant graphics and a new six-minute video explain the challenges they faced here, from building Laguna Dam a few miles upstream where the bedrock was covered with hundreds of feet of river silt, to the epic feat of burying the Siphon so it couldn’t be destroyed by flooding. Using 1912 equipment and


Ann Walker Photo


engineering know-how – and employing East Coast sand hogs who’d worked on subway tunnels in New York and Boston – the builders of the Siphon drove a 14-foot diameter concrete tube 965 feet through the sandstone 50 feet beneath the river bed. Because the 76-foot California


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&


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