• Rainbow over Half Dome

    Yosemite

    National Park California

There are park alerts in effect.
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  • Road Closures Due to El Portal Fire

    The Big Oak Flat Road between Crane Flat and the El Portal Road is temporarily closed. There is no access to Yosemite Valley via the Big Oak Flat Road or Highway 120. Tioga Road is open and accessible via Big Oak Flat and Tioga Pass Entrances. More »

  • Campground Closures Due to Fire

    Crane Flat, Bridalveil Creek, and Yosemite Creek Campgrounds are temporarily closed. More »

  • Yosemite National Park is Open

    Yosemite Valley, Glacier Point, and Wawona/Mariposa Grove areas are open and accessible via Highways 140 and 41. Tioga Road is not accessible via Highways 140 and 41 due to a fire.

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.