Thursday, June 26, 2008

May 2008 O'Shaughnessy Dam experimental flood

In late May 2008, the SFPUC and Yosemite National Park conducted an experimental flood on the Upper Tuolumne River to test ideas about the role snowmelt runoff played in supporting the Poopenaut Valley ecosystem in Yosemite National Park before O'Shaughnessy Dam was built. Information gathered by project scientists monitoring the flood will help in developing ecological goals for water releases to support the unique wetlands and ponds in the Poopenaut Valley.

To help document the effects of the experimental flood on the Poopenaut Valley, the project team utilized time lapse photography. The three videos we've included here were taken on the day of peak flooding in the valley.

Valley overview

North Pond "continental divide"

South meadow