The O’Shaughnessy Dam and the Hetch Hetchy Reservoir inside Yosemite National Park
The dam was completed in 1923. All of San Francisco’s water comes from the Hetch Hetchy.

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© 2012 Ronald D. Henggeler. All rights reserved
The image is not in the public domain. It is the sole property of the artist and may not be reproduced on the internet, sold, altered, enhanced, modified by artificial, digital or computer imaging or in any other form without the express written permission of the artist.