Big Sage Reservoir   Be the first to submit input for Big Sage Reservoir. If you have info on Big Sage Reservoir, Phillips County, Montana please submit it here to improve this web site.          These outdoors activities are available near Big Sage Reservoir.   Camp Grounds Near Big Sage Reservoir: Camp Creek Campground, Phillips County, 8 miles away Buckhorn Store - cabins and RV Park, Zortman, 9 miles away   Ski Areas Near Big Sage Reservoir: Bear Paw Ski Bowl, Montana, 87 miles away       900 foot drop, 2 lifts, 25 runs