Hetch Hetchy Valley, once nearly identical to Yosemite Valley, now lies underwater beneath the Hetch Hetchy Reservoir. Built after the 1906 San Francisco earthquake to supply clean water and power, the project flooded a once-spectacular glacial valley. Today, it serves over two million people and generates 1.6 billion kilowatt hours of electricity annually—but the debate over whether the dam should remain continues.

Read the full article on our website: Yosemite Valley’s Twin Sacrificed for Drinking Water