Helle Slough   Be the first to submit input for Helle Slough. If you have info on Helle Slough, Williams County, North Dakota please submit it here to improve this web site.          These outdoors activities are available near Helle Slough.   Public Lands Near Helle Slough: Lewis & Clark State Park, North Dakota, 22 miles away   Hotels Near Helle Slough: Missouri Flats Inn, Williston, 39 miles away Candlewood Suites WILLISTON, Williston, 39 miles away Microtel Williston, Williston, 39 miles away Marquis Plaza And Suites, Williston, 40 miles away