Mammoth Waterhole is a reservoir located in Harney County, Oregon. It appears on the Twin Buttes USGS 7.5-minute topographic quadrangle. The nearest populated place is Narrows, approximately 17.2 miles to the NNE.
Harney County · Oregon
Mammoth Waterhole is a reservoir located in Harney County, Oregon. It appears on the Twin Buttes USGS 7.5-minute topographic quadrangle. The nearest populated place is Narrows, approximately 17.2 miles to the NNE.