O’Shaughnessy Dam releases water from Hetch Hetchy Reservoir. Photo by Inklein.
San Francisco is high and dry as the SFPUC cut water delivery from Hetch Hetchy for at least a month.
The shutdown is part of a planned outage to allow for maintenance on the aging water delivery system and is expected to last until mid- to late-February.
The shutdown will allow work to be undertaken on the $4.6 billion, 12-year Water System Improvement Program, which aims to upgrade and maintain the water delivery and storage system and protect it from earthquakes.
In anticipation of the shutdown, the flow of water from Hetch Hetchy into Bay Area reservoirs was dramatically increased in recent weeks.