Pentecost Reservoir   Be the first to submit input for Pentecost Reservoir. If you have info on Pentecost Reservoir, Carter County, Montana please submit it here to improve this web site.          These outdoors activities are available near Pentecost Reservoir.   Public Lands Near Pentecost Reservoir: Devils Tower National Monument, Devils Tower - WY, 37 miles away   Hotels Near Pentecost Reservoir: Best Western Devils Tower Inn, Hulett, 42 miles away   Ski Areas Near Pentecost Reservoir: Terry Peak, South Dakota, 93 miles away       1100 foot drop, 6 lifts, 24 runs