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2012 Hetch Hetchy Road rock fall

Several small boulders on a gravel road next to a steep rock face.

A rock fall onto the service road below O'Shaughnessy Dam that leads to the Diversion Tunnel. Around 20 boulders were found on the road. The source area was above the road, within an overhang with water seepage and tree roots.

UTM East: 254898; UTM North: 4203419; Elevation: 1143

U.S. National Park Service

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Yosemite National Park, Code: YOSE

Hetch Hetchy
Latitude: 37.9453246891322, Longitude: -119.78933845

Hetch Hetchy Road
Yosemite National Park, California
Latitude: 37.8399200439453, Longitude: -119.540397644043

Rock Fall Database GroupID for YOSE : 2012030201
Rock Fall Database ID for YOSE : 2012030201-1

Yosemite Rock Falls Collection

20120303

03/02/2012

Public Can View

Organization: Yosemite NP
Position: Park Geologist
Address: El Portal, CA 95318
Email: greg_stock@nps.gov

Wednesday, May 11, 2022 11:55:41 PM

Thursday, July 28, 2022 8:23:24 PM

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