Yosemite National Park is one of the most studied units in the National Park System. Park planners and subject matter experts drew upon this body of research and knowledge throughout the development of the Tuolumne River Plan. In addition to the previously conducted research, the park also initiated new studies to fill in gaps in the research. Below is a selection of the new research conducted for the Tuolumne River Plan. A full bibliography will be included in the draft environmental impact statement.