LaRoche Island (historical) is a island located in Gregory County, South Dakota. It appears on the Lucas NW USGS 7.5-minute topographic quadrangle. The nearest populated place is Platte Colony, approximately 3.9 miles to the NNE.
Gregory County · South Dakota
LaRoche Island (historical) is a island located in Gregory County, South Dakota. It appears on the Lucas NW USGS 7.5-minute topographic quadrangle. The nearest populated place is Platte Colony, approximately 3.9 miles to the NNE.