About This Route
Tenaya Lake, a stunning alpine gem at 8,150 feet in Yosemite's high country along Tioga Road, is a top destination for swimming amid granite domes and meadows. Reached via a pullout parking area on Highway 120, it features a gradual entry shore perfect for wading and open-water swims. NPS permits swimming here, but emphasizes extreme caution due to glacial origins. Summer crowds flock for cliff jumping (discouraged) and paddleboarding; best visited early morning to avoid winds. The lake's clarity reveals depths over 100 feet, but hidden drop-offs surprise novices. Combine with hikes to nearby Clouds Rest for a full day adventure.
Safety Considerations
High-elevation lakes like Tenaya carry unique dangers: water hovers around 50-60°F, triggering cold shock response per Wilderness Medical Associates standards, which impairs breathing and swimming ability. Winds whip up waves quickly, pushing swimmers offshore; afternoon thermals are notorious. Rocky bottoms cause foot injuries without proper footwear. Blue-green algae blooms occasionally form, posing health risks; check NPS water quality alerts. Avoid areas near inflows from Tenaya Creek, where currents feed into the lake. Life jackets are mandatory for non-swimmers, as rescue is challenging without boats. Hypothermia risk doubles at altitude; limit exposure to 20 minutes. Adhere to Leave No Trace by using designated restrooms and avoiding glass containers. Recent incidents include wind-swept paddlers requiring ranger boats.
Essential Gear
Wetsuits from O'Neill for insulation, neoprene booties, PFDs rated for cold water, and a brightly colored tow float for visibility. Pack bear spray, first-aid kit with bandages for cuts, and UV-protective rash guards.
Emergency Tips
Wave arms overhead to signal; swim parallel to shore if drifting. For hypothermia, remove wet clothes and use space blankets. Activate personal locator beacon if isolated. Rangers at Tuolumne Meadows station respond swiftly to 911 calls.