About This Route
The Merced River in Yosemite Valley offers one of the most accessible paddling experiences in Yosemite National Park, ideal for families and beginners. This gentle float typically starts at Sunnyside Campground or Stoneman Bridge and ends at Sentinel Beach, covering about 3 miles of mostly flatwater with occasional riffles. Surrounded by iconic granite cliffs like Half Dome and El Capitan, the route provides stunning views while remaining Class I, perfect for canoes or inflatable kayaks. According to the National Park Service (NPS), water levels peak from late May to early July due to snowmelt, making late summer the safest time for floats. Expect water temperatures around 50-60°F even in peak season, so hypothermia remains a risk. Follow Leave No Trace principles by packing out all trash and avoiding riverbank trampling to protect this fragile ecosystem.
Safety Considerations
Swift currents can surprise paddlers near El Portal or during high flows; always check USGS stream gauges for the Merced River at Happy Isles gauge before launching. Foot entrapments are a leading hazard, as strong currents can pin legs under submerged rocks, per REI's whitewater safety guidelines. Never stand up in the river; float on your back with feet high if you swim. Watch for strainers, fallen trees that create deadly backwash. Poison oak lines many banks, so wear long sleeves and pants. NPS reports frequent rescues here due to underestimating cold water shock. Paddle in groups of at least four, designate a sweep boat, and scout any rapids. Solar exposure is intense; apply waterproof sunscreen like Neutrogena and stay hydrated. Bear activity peaks at dawn and dusk, so secure food in bear canisters onshore.
Essential Gear
Pack a properly fitted Type III PFD from brands like Stohlquist or NRS for every person, including pets. Include a paddle leash, whistle, bilge pump, and dry bags from Sea to Summit for electronics. Helmets are recommended for riffles. A throw rope and first-aid kit with QuikClot for lacerations are must-haves. Rent gear from Yosemite Outfitters if needed.