There are at least 50 named lakes and reservoirs in Sweet Grass County, Montana. Lakes Armour Pond, , el. Beley Lakes, , el. Blue Lake, , el. Blue Lake, , el. Burnt Gulch Lake, , el. Camp Lake, , el. Cascade Lake, , el. Chalice Lake, , el. Cirque Lake, , el. Crazy Lake, , el. Divide Creek Lake, , el. Emerald Lake, , el. Favonius Lake, , el. Fish Lake, , el. Granite Lake, , el. Hidden Lake, , el. Horseshoe Lake, , el. Jay Lake, , el. Jordan Lake, , el. Kent Lake, , el. Lake Columbine, , el. Lake Kathleen, , el. Lake Pinchot, , el. Lightning Lake, , el. Lost Lake, , el. Lower Glaston Lake, , el. Martes Lake, , el. Mirror Lake, , el. Moccasin Lake, , el. Mouse Lake, , el. North Picket Pin Lake, , el. Owl Lake, , el. Pentad Lake, , el. Pipit Lake, , el. Rainbow Lakes, , el. Rein Lake, , el. South Picket Pin Lake, , el. Sundown Lake, , el. Sunken Rock Lake, , el. Swamp Lake, , el. Thunder Lake, , el. Trout Lake, , el. Wounded Man Lake, , el. Reservoirs Beley Pond, , el. Glass Lindsay Lakes Lower Reservoir, , el. Lake Adam Upper Reservoir, , el. Lake Adam Upper Reservoir, , el. Lake Adams Upper Reservoir, , el. Lavold Reservoir, , el. Upper Glaston Lake, , el. See also List of lakes in Montana Notes Bodies of water of Sweet Grass County, Montana Sweet Grass