This Yosemite webcam is maintained by the U.S. Geological Survey.

Merced River Webcam at Happy Isles

It’s all about the flow with this webcam. Operated by the U.S. Geological Survey since 1915, the Happy Isles gaging station monitors conditions on the Merced River providing valuable data on floods during peak snowmelt and continuous, real-time output. Located in Yosemite Valley near the trailhead for the Mist Trail, bring your waterproof shell and do some waterfall hopping while you’re at it!