Grindstone Reservoir   Be the first to submit input for Grindstone Reservoir. If you have info on Grindstone Reservoir, Crook County, Oregon please submit it here to improve this web site.          These outdoors activities are available near Grindstone Reservoir.   Public Lands Near Grindstone Reservoir: Cline Falls State Park, Oregon, 31 miles away John Day Fossil Beds National Monument, Kimberly - OR, 37 miles away   Camp Grounds Near Grindstone Reservoir: Buck Spring Campground, Harney County, 9 miles away   Hotels Near Grindstone Reservoir: Best Western Rory & Ryan Inns, Hines, 49 miles away Americas Best Inns-Burns, Burns, 49 miles away Days Inn Burns, Burns, 49 miles away   Hiking Trails Near Grindstone Reservoir: Owl Creek Trail, Wheeler County, 18 miles away        1 hiking miles, 301 feet elevation difference South Prong Trail, Grant County, 19 miles away       4.9 hiking miles, 2147 feet elevation difference Black Canyon Trail, Wheeler County, 19 miles away       8.1 hiking miles, 3351 feet elevation difference