North Tenmile Lake is one of a chain of lakes along the Oregon Coast south of the Umpqua River in the United States. The chain includes Tenmile, Eel, Clear, and smaller lakes, which drain into the Pacific Ocean via Tenmile Creek. The lake is 8 miles (13 km) south of Reedsport and 1 mile (1.6 km) east of U.S. Route 101 near the community of Lakeside. North Tenmile Lake is connected to Tenmile Lake by a navigable 0.5-mile (0.80 km) channel.