conduct an $8 million study on how the flooded valley could be drained and restored to its former state. The proposed study would also have been required to identify potential replacements for the water storage capacity and hydroelectric power production. See also Grand Canyon of the Tuolumne Hetch Hetchy Railroad Lake Vernon trail List of dams and reservoirs in California List of power stations in California List of the tallest dams in the United States List of lakes in California List of largest reservoirs of California The National Parks: America's Best Idea Gifford Pinchot San Francisco Public Utilities Commission San Francisco Water Department Timeline of environmental events Tuolumne River Yosemite National Park References Further reading DOI:10.1093/acprof:oso/9780195149470.001.0001 online External links Current Conditions, Hetch Hetchy Reservoir, California Department of Water Resources San Francisco Public Utilities Commission: Hetch Hetchy Water and Power United States Geological Survey California Resources Agency Hetch Hetchy Restoration Study Bay Area Water Supply and Conservation Agency on Hetch Hetchy dam Geology of Yosemite National Park Landforms of Yosemite National Park Landforms of Tuolumne County, California Tuolumne River History of the Sierra Nevada (United States) History of San Francisco Interbasin transfer