About This Route
Lewis Lake, a serene 680-acre body of water at the park's south end near the Lewis Falls trailhead, serves as a gateway for canoeists. Launch from the sandy beach at the north end or near the campground. Paddle south toward Shoshone Lake's channel or explore forested shores with views of the Red Mountains. This beginner-friendly lake connects to the only non-motorized river route in the park, ideal for half-day outings or staging for backcountry trips. Obtain your AIS permit at the South Entrance or West Thumb; season aligns with park boating dates through October 31.
Safety Considerations
Water temps hover in the 50s Fahrenheit, risking cold water shock if you fall in, per NPS warnings. Afternoon thermal winds from surrounding peaks can create choppy conditions; launch early mornings. Mandatory USCG PFDs must be worn; no exceptions. Inspect for quagga mussels or felt-soled boots, banned under Yellowstone AIS rules. Steer clear of the Lewis River outflow rapids above the lake. Bear activity peaks near berry patches; store food in bear-proof containers. Adhere to NPS speed limits near shorelines to protect nesting waterfowl.
Essential Gear
Equip with a NRS Chinook PFD for comfort, Perception paddle, and throw rope. Carry an NRS repair kit for hull punctures from submerged logs. Essentials include a Garmin inReach satellite communicator, UV water purifier, and NPS-provided lake map.
Emergency Tips
Wind capsizes: right the canoe if shallow, or swim to shore hugging the upwind side. For immersion, float on back to conserve energy until rescue. Use whistle and high-visibility strobe. Rangers from Grant Village respond quickest; Lewis Lake has fair cell coverage for 911. Follow NPS cold water immersion protocols: controlled breathing first.