Donnell Lake
Lake · 4,648 ft · Yosemite corridor
Donnell Lake sits at 4,648 feet in the Yosemite corridor of California's Sierra Nevada. A small alpine lake sheltered from the open exposure of nearby larger waters, it offers calmer conditions than the reservoirs to the east.
Morning stillness gives way to afternoon wind funneling off the lake by mid-day. Protected cove areas stay calmer than the open basin. Wind peaks in spring and early summer; expect 23 mph gusts on exposed stretches. Temperature swings 24 to 51 degrees across the year. Morning paddles or fishing beat the afternoon chop.
Over the past month, Donnell Lake averaged 8 mph wind and 35 degrees Fahrenheit, with NoGo scores hovering at 14 (generally paddleable but watch for afternoon swells). The week ahead holds similar conditions; plan for calm mornings before midday thermals push wind onto the water. Crowding stays light at a 6 out of 10 average, making weekdays and off-peak weekends ideal.
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About Donnell Lake
Donnell Lake lies on Highway 120 between Groveland and the Yosemite high country, roughly 30 miles west of Tioga Pass. The lake drains into the Tuolumne River system and sits in a glacially-carved basin surrounded by mixed conifer forest at elevation. Access is straightforward from Highway 120; pullouts and a small parking area serve the water's edge. The Yosemite corridor designation reflects its position on the main eastern gateway route, closer to the park boundary than to the western foothills.
Donnell Lake runs cold year-round, fed by Sierra snowmelt and high-elevation springs. Winter temperatures drop to 24 degrees Fahrenheit on average; summer maxes reach 51 degrees, though the lake itself remains in the 40s even at peak season. The 30-day average wind of 8 mph masks sharp daily variation: calm mornings freeze to glassy conditions, while afternoon thermals push gusts to 23 mph by late spring. Crowding averages 6 out of 10, highest on weekends following Highway 120 reopening after winter closures. The lake clears by mid-week and stays sparse through autumn.
Donnell Lake suits paddlers seeking calm water without the bustle of Tenaya or Mono Basin lakes. Fishing for brook and rainbow trout draws a small steady stream of anglers. The water is too cold for swimming except in late August. Parking fills quickly on sunny weekends; arrive before 9 a.m. or plan a weekday visit. Snowpack persists into late May at this elevation, and Highway 120 closures during winter mean the lake is unreachable November through April. Spring runoff muddy the inlets but does not stop access. Afternoon wind makes morning departure non-negotiable for paddlers.
For nearby alternatives, June Lake Loop (south on Highway 395) offers larger alpine water with more established facilities and higher summer crowds. Tenaya Lake, nearer Yosemite Valley, runs busier and more exposed. Donnell sits between these two in size, wind exposure, and traffic; it appeals to those avoiding the peak-season crush of famous lakes while staying on the main Sierra corridor.