BUILDING A DAM in Yosemite Park would never happen today. But more than 80 years ago, San Francisco filled the Hetch Hetchy Valley to create a water-and-power system that now serves 2.4 million people ...

A 5-mile trail (round-trip) leads from the Hetch Hetchy Valley's O'Shaughnessy Dam to Wapama Falls in Yosemite National Park. The route skirts the edge of the Hetch Hetchy Reservoir. (Christopher ...

Yosemite is one of the most visited national parks in the U.S. Bigger than the size of Rhode Island, it hosts diverse landscapes with icons like alpine valleys, sequoia groves, and the granite cliffs ...

YOSEMITE NATIONAL PARK, Calif. (KFSN) -- The Hetch Hetchy Valley is located in the northwest corner of Yosemite National Park. It's filled with water held back by O'Shaughnessy Dam. Under the ...

The water was winning. Fed by the heaviest Sierra snowmelt in decades, it gushed down the narrow valley’s walls and rushed across the trail in front of me. The bravest and most foolish hikers plunged ...