• View of Half Dome and Washington Column in Yosemite Valley

    Yosemite

    National Park California

Tuolumne River Plan~Science Behind the Plan

 

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.

 

Did You Know?

El Portal Boulder Bar

At the east end of El Portal, just west of Yosemite National Park’s boundary, changing river gradients, glacial history, and powerful floods have created a boulder bar with boulders much larger than typically found in such deposits. This is no ordinary boulder bar, however, for it contains massive boulders over a meter in diameter and weighing many tons.