The San Francisco Public Utilities Commission (SFPUC) owns and operates the Hetch Hetchy Water and Power system. This system, located in the upper Tuolumne River watershed, includes dams and flow diversions on the Tuolumne River, Cherry Creek (a tributary to the Tuolumne River), and Eleanor Creek (a tributary to Cherry Creek). As part of establishing a common foundation of environmental information for the river and stream reaches affected by operation of the Hetch Hetchy system, the SFPUC Natural Resources

Cherry Creek

and Hetch Hetchy Water and Power Divisions have embarked on an intensive one-year effort to describe current ecological and geomorphic conditions in the Tuolumne River from O’Shaughnessy Dam to New Don Pedro Reservoir, Cherry Creek downstream of Cherry Lake Dam, and Eleanor Creek downstream of Lake Eleanor Dam. Numerous agencies and other stakeholders are also contributing to this study, including the Yosemite National Park Service (NPS), U.S. Fish and Wildlife Service (USFWS), and the U.S. Forest Service (USFS).