Yankee Reservoir   Be the first to submit input for Yankee Reservoir. If you have info on Yankee Reservoir, Powder River County, Montana please submit it here to improve this web site.          These outdoors activities are available near Yankee Reservoir.   Ski Areas Near Yankee Reservoir: Antelope Butte, Wyoming, 99 miles away       1000 foot drop, 3 lifts, 18 runs