Boundary Reservoir   Be the first to submit input for Boundary Reservoir. If you have info on Boundary Reservoir, Lake County, Oregon please submit it here to improve this web site.          These outdoors activities are available near Boundary Reservoir.   Lakes Near Boundary Reservoir: Summer Lake, Lake County, 18 miles away   Public Lands Near Boundary Reservoir: Fort Rock State Park, Oregon, 30 miles away Fremont National Forest, Oregon, 36 miles away   Camp Grounds Near Boundary Reservoir: R & R Mobile & Rv Park, Christmas Valley, 3 miles away