Harden Lake
What to Expect
Safety Advisory
The optional extension to the Grand Canyon of the Tuolumne rim is exposed and unfenced — the dropoff is severe and the rock can be slippery when wet. Keep well back from the edge, especially with children.
Mosquitoes near the lake can be relentless from late June through mid-July. Bring bug spray with DEET or picaridin, and consider a head net if you plan to linger.
Trail Details
Pro Tips
Start from the White Wolf area off Tioga Road — the trailhead is well-marked but the parking lot fills by mid-morning on summer weekends, so arrive before 9 AM or go on a weekday.
The lake shrinks significantly by late August and can be more mud flat than lake by September. Visit in late June through mid-July for the best water levels and peak wildflower displays in the surrounding meadows.
If you continue past the lake to the Grand Canyon of the Tuolumne overlook, bring a wide-angle lens — the view drops thousands of feet into one of Yosemite's least-visited gorges, and the afternoon light raking across the canyon walls is worth the extra effort.