Langdon Reservoir   Be the first to submit input for Langdon Reservoir. If you have info on Langdon Reservoir, Cavalier County, North Dakota please submit it here to improve this web site.          These outdoors activities are available near Langdon Reservoir.   Hotels Near Langdon Reservoir: Super 8 Devils Lake, Devils Lake, 44 miles away Holiday Inn Express DEVILS LAKE, Devils Lake, 44 miles away Fireside Inn and Suites, Devils Lake, 45 miles away Days Inn Devils Lake, Devils Lake, 45 miles away