Grand Canyon of the Tuolumne [SEP] located next to body of water
Grand Canyon of the Tuolumne
The Grand Canyon of the Tuolumne is the notable canyon section of the river valley of the Tuolumne River, located within Yosemite National Park, in Tuolumne County and the Sierra Nevada, California. 
As defined by the United States Geological Survey, the canyon begins at Glen Aulin and ends directly above Hetch Hetchy Valley.
Geography.
The Grand Canyon of the Tuolumne starts at Glen Aulin, immediately below the confluence of Cold Canyon, Conness Creek, and the Tuolumne River. Here, the
, the river enters the spectacular Grand Canyon of the Tuolumne, where it forms three more major waterfalls – California, LeConte and Waterwheel Falls. Return and Piute Creeks join the river from the north within the Tuolumne Canyon. At the end of the canyon the river widens into Hetch Hetchy Reservoir, formed by a dam built in 1923 to provide water to the city of San Francisco, in the scenic Hetch Hetchy Valley. Falls Creek forms Wapama Falls and Tueeulala Falls, two of the highest in Yosemite, as it enters the