Sherwin 9-249-6 Reservoir (historical) is a reservoir located in Weston County, Wyoming. It appears on the Piney Canyon SE USGS 7.5-minute topographic quadrangle. The elevation at this location is approximately 4,392.52 feet (1,338.84 m) above sea level. The nearest populated place is Underwood Crossing, approximately 2.8 miles to the E.