Tag Archives: Rockfall

Minor injuries and several cabins destroyed in significant rockfall event https://www.nps.gov/yose/learn/news/rockfall1008.htm

On March 28, 2009, a large rockfall occurred from Ahwiyah Point near Half Dome. Rocks fell roughly 1,800 feet, knocking down hundreds of trees and burying hundreds of feet of trail on the southern portion of the Mirror Lake Loop Trail. The impact generated ground shaking equivalent to a magnitude …

Yosemite National Park is initiating public scoping for the Curry Village Rockfall Hazard Zone Structures Project. Compliance with the National Environmental Policy Act (NEPA) and the National Historic Preservation Act (NHPA) will be coordinated through development of an environmental assessment (EA). The public scoping period for the EA will open …

At approximately 11:00 a.m. today, December 30, a large rock fell onto Highway 140/El Portal Road blocking all traffic from entering or exiting Yosemite National Park and closing the road. The rock fell approximately one half mile east of Yosemite View Lodge in El Portal, just inside the Yosemite National …

Highway 140/El Portal Road leading into Yosemite National Park has reopened after a large rock fell onto the roadway. The large rock fell onto the roadway yesterday, December 30, blocking traffic from entering or exiting the park via Highway 140. The rock was estimated to be approximately 10-15 feet high, …

Yosemite National Park announces the release of the Curry Village Rockfall Hazard Zone Structures Environmental Assessment (EA). The EA will be available for public review and comment from August 8, 2011 through September 9, 2011. The EA addresses the future disposition of 72 structures that were previously closed by the …

Yosemite National Park announces the signing of the Curry Village Rockfall Hazard Zone Structures Project Finding of No Significant Impact (FONSI). This document records the decision of the National Park Service to remove the remaining 72 structures within the closed rockfall hazard zone at Curry Village. This action was described …

Yosemite National Park and USGS scientists, in collaboration with academic geologists, recently completed a comprehensive study of rockfall hazard and risk in Yosemite Valley. This internationally peer-reviewed study utilized new data and technologies to map the cliffs and talus slopes, date ancient rockfalls, and perform computer simulations of potential future …

A rockfall in the Hetch Hetchy area of Yosemite National Park closes trail east of Wapama Falls. At approximately 1:30 p.m. on March 31, a large rockfall occurred from the cliff just east of Wapama Falls above the Hetch Hetchy reservoir. No visitors were injured. However, the trail was closed …

Yosemite National Park road crews have begun clearing debris caused by a rockfall on Thursday morning, January, 7, at 5:45 a.m. that closed the El Portal Road (Highway 140) in Yosemite National Park. The rockfall triggered several large boulders and debris to block access to Yosemite Valley via Highway 140. …

The El Portal Road (Highway 140) and the Big Oak Flat Road (iIghway 120) are currently closed due to a series of rockfalls early this morning. There is no access to Yosemite Valley via Highways 140 and 120. The only vehicular access to Yosemite Valley is along the Wawona Road …

A rockfall reported today around Noon has closed the El Portal Road and Arch Rock Entrance in Yosemite National Park. The rockfall was reported inside the park boundary about two miles east of the park line in El Portal. There are no injuries or damage to traveling vehicles reported. https://www.nps.gov/yose/learn/news/epclosedjune.htm

A rockfall of undetermined size occurred in Yosemite National Park this afternoon at about 1:55 p.m. this afternoon. The rockfall was reported to have happened from El Capitan, a granite monolith above Yosemite Valley. The release point appears to be near the “Waterfall Route”, a popular climbing route on the …