Upper Saranac Lake is one of three connected lakes, part of the Saranac River, in the towns of Santa Clara and Harrietstown, near the village of Saranac Lake in the Adirondacks in northern New York. Upper Saranac Lake is the sixth largest lake in the Adirondacks. With Middle Saranac Lake and Lower Saranac Lake, a 17-mile paddle with only one carry is possible. There are 20 primitive campsites accessible by boat available on a first-come basis. Upper Saranac Lake is also known as Sin-ha-lo-nen-ne-pus.
The 37 miles of shoreline is 54 percent privately owned, and much of it is lined with "camps", ranging from true Great Camps to small weekend cottages. The lake, along with both Middle and Lower Saranac Lakes, is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, NY and ends in Fort Kent, ME.