Grassy Reservoir   Be the first to submit input for Grassy Reservoir. If you have info on Grassy Reservoir, Malheur County, Oregon please submit it here to improve this web site.          These outdoors activities are available near Grassy Reservoir.   Lakes Near Grassy Reservoir: Lake Owyhee, Malheur County, 10 miles away Bully Creek Reservoir, Malheur County, 17 miles away   Public Lands Near Grassy Reservoir: Lake Owyhee State Park, Oregon, 11 miles away Farewell Bend State Park, Oregon, 34 miles away Ontario State Park, Oregon, 35 miles away   Hotels Near Grassy Reservoir: Rodeway Inn Ontario, Ontario, 35 miles away Holiday Inn Express Hotel & Suites ONTARIO, Ontario, 35 miles away Sleep Inn Ontario, Ontario, 35 miles away Clarion Inn Ontario, Ontario, 35 miles away BEST WESTERN PLUS Inn & Suites, Ontario, 36 miles away