A provocative new hypothesis suggests that Yosemite Valley was carved by an ancient volcano and a disappearing river, both of which have long since eroded away. Geologists have long debated why ...

Yosemite, San Joaquin River Canyon and Upper San Joaquin River are under a weather alert for strong thunderstorms by the ...

The National Park Service is closing most of Yosemite Valley, as the Merced River is expected to reach flood levels Thursday night. The closure starts at 10 a.m. Friday, the park service said Tuesday.

A significant rockslide occurred about 10 p.m. Monday in the Merced River Canyon and has cut off Highway 140 access to El Portal and Yosemite National Park in Mariposa County. Highway 120 from ...

On March 1, Yosemite's team measured the Merced River drainage, which was at 72 percent of average snowpack, while the Tuolumne River stood at 83 percent. "This current storm should push us closer ...

The Merced River in Yosemite Valley has reached flood stage, the National Weather Service said. Related Articles Map: People drowned or swept away in California rivers, spring and summer 2023 At ...