O'Brien Lake   Be the first to submit input for O'Brien Lake. If you have info on O'Brien Lake, Lincoln County, Montana please submit it here to improve this web site.          These outdoors activities are available near O'Brien Lake.   Marinas On or Near O'Brien Lake: Koocanusa Marina and Resort, Libby, 20 miles away   Camp Grounds Near O'Brien Lake: Tetrault Lake Campground, Lincoln County, 3 miles away Ez-k, Rexford, 3 miles away Swisher Lake Campground, Lincoln County, 4 miles away Mariners Haven, Rexford, 4 miles away   Hotels Near O'Brien Lake: Caboose Motel, Libby, 37 miles away   Ski Areas Near O'Brien Lake: Fernie, British Columbia, 27 miles away       2816 foot drop, 10 lifts, 114 runs Turner Mountain, Montana, 37 miles away       2110 foot drop, 1 lifts, 20 runs Castle Mountain, Alberta, 53 miles away       2850 foot drop, 5 lifts, 59 runs