Read this Flying Dawn Marie travel guide to hiking the trail to Wapama Falls in the Hetch Hetchy area of Yosemite National Park. Located near the town of Groveland, this waterfall hike takes you alongside the Hetch Hetchy Reservoir, which was formed a century ago when the Hetch Hetchy Valley was flooded by the creation of the O'Shaughnessy Dam, providing water to the city of San Francisco.
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