Project Name:  Lower Cherry Aqueduct Emergency Rehabilitation No HH-974
  San Francisco Public Utilities Commission
Completion:  September 2014

The Lower Cherry Aqueduct Emergency Rehabilitation project allowed Hetch Hetchy Water and Power’s Cherry Aqueduct system to provide an alternate source of water conveyance to San Francisco in emergency situations. Work consisted of cleaning and repairs of over 13,000’ of tunnel including hard rock excavation, removal of sediment. It also involved the installation of rock bolts, grouting, reinforcing materials and the installation of new shotcrete liner.