Just beyond the Don Pedro Reservoir, nestled in the foothills of the Sierra Nevada, lies key infrastructure in supplying much of the Bay Area with water.
However, some of the infrastructure is old, like the 100-year-old, 19-mile-long Mountain Tunnel, which is a key conduit for the Hetch Hetchy water flow on its route to the Bay Area. But a project is underway to restore and repair the Mountain Tunnel.
"85% of the water supply for 2.8 million people in the Bay Area comes from the Hetch Hetchy Reservoir, and all of that water passes through the Mountain Tunnel," she said."If this tunnel failed or collapsed, it would take us probably more than a year to repair it, which would mean we wouldn't be able to provide water to the Bay Area. That would be a catastrophic situation."
Work inside the actual Mountain Tunnel can only occur during a short period of time during the winter when the tunnel is out of service and empty of water. This was the second of what will be five anticipated shutdowns of the tunnel, as a result of the project.
France Dernières Nouvelles, France Actualités
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