Yosemite wildfire threatens SF grid August 25, 2013 Not only are the wildfires in Yosemite destroying the natural beauty of the park they are threatening the water and power systems that San Franciscans depend on. Read more in this article from Reuters' reporter Laila Kearney. Yosemite wildfire grows, fueling dangerous winds Here is a little background on the Hetch Hetchy Water and Power System
