Restoring Yosemite's Hetch Hetchy Valley principally requires improvements to San Francisco's water system and replacement of some of its hydropower. Returning the valley to Yosemite also raises questions about how to manage and encourage its physical restoration as well as what to do with the O'Shaughnessy Dam itself.
Restore Hetch Hetchy lays out many alternatives, but acknowledges that it will ultimately be the purview of San Francisco to decide how to improve its water system and of the National Park Service, with public input, to determine how to manage the restore valley itself.
Nevertheless, the following reports provide a wide of potential answers to these questions.
- Restoration of Hetch Hetchy Valley and San Francisco's Water Supply, Restore Hetch Hetchy, 2014
- Proposition F - Ballot Initiative in San Francisco, 2012
- Beyond and Beneath O'Shaughnessy Dam: Options to Restore Hetch Hetchy valley and Replace Water and Energy Supplies, Dr. Gerald Meral, 2010
- Testimony of Environmental Defense Fund, Assembly Committee on water, Parks and Wildlife, 2006
- Reassembling Hetch Hetchy water supply without O’Shaughnessy Dam, Sarah Null and Jay Lund, Journal of the American Water Resources Association, 2006
- Hetch Hetchy Restoration Study (part 1, part 2), Department of Water Resources, 2006
- Finding the Way back to Hetch Hetchy Valley (part 1, part 2), Restore Hetch Hetchy, 2005
- Tuolumne Watershed Diversions without Hetch Hetchy Reservoir: Comparison of Interties to Cherry and Don Pedro Reservoirs, Environmental Defense Fund, 2005
- Hetch Hetchy Valley; A Plan for Adaptive Restoration, University of Wisconsin, 2004
- Paradise Regained: Solutions for Restoring Yosemite’s Hetch Hetchy Valley, 2004
- Hetch Hetchy: Water and Power Replacement Concepts, U.S. Bureau of Reclamation, 1988
- Alternatives for Restoration of Hetch Hetchy Valley Following Removal of the Dam and Reservoir , National Park Service, 1987