TUOLUMNE CITY, Calif. —
On Monday the fire was still several miles away from the steep granite canyon where the reservoir is nestled, but several spot fires were burning closer, and firefighters were protecting hydroelectric transmission lines and other utility facilities.
“Obviously we’re paying close attention to the city’s water supply,” said Glen Stratton, an operations chief on the fire suppression team.
Power generation at the reservoir was shut down last week so firefighters would not be imperiled by live wires. San Francisco is buying replacement power from other sources to run city hall and other municipal buildings. It has been at least 17 years since fire ravaged the northernmost stretch of Yosemite that is under siege.