LaRoche Island (historical) USGS Lucas NW Quad, South Dakota, Topographic Map

LaRoche Island (historical) is an Island in the state of South Dakota (county of Gregory), located at latitude - longitude coordinates (also known as lat-long or GPS coordinates) of N 43.41667 and W -99.15454. LaRoche Island (historical) is shown in the center of the topographic (topo) map, which is sourced from the United States Geographical Survey map USGS Lucas NW quad.