Caption O'Shaughnessy Dam, which created Hetch Hetchy Reservoir in Yosemite National Park, California, United States of America
Keywords Alternative energy, America, American west, Attraction, California, Canyon, Civil engineering, Clean energy, Construct, Create, Energy production, Engineer, Flood, Flooded, Flooding, Geology, Hetch Hetchy Reservoir, Hetch Hetchy Valley, Hydroelectric, Hydroelectricity, John Muir, Lake, Natural resource, O'Shaughnessy Dam, Physical geography, Politics, Reservoir, Resource, San Francisco Public Utilities, Source, Structure, Supply, United States of America, USA, Utilities, Utility, Valley, Water, Water district, Water management, Water politics, Yosemite National Park
