2021 Map of Ecoffey Lake

About this map

Little White River meanders across the northern portion of this Bennett County landscape, carving a wide valley through the plains of southern South Dakota. The area is defined by its intermittent water sources and the varied topography of the Great Plains, where high ridges separate the drainage of the river from the basin containing Ecoffey Lake. This map captures a rural expanse dominated by natural hydrology and public land survey divisions, including townships t36n r40w and t35n r39w. Seasonal wetlands and smaller bodies of water like Posey Lake, West Lake, and East Lake dot the southern terrain, while Emmo Springs provides a rare localized point of groundwater discharge to the north. The lack of concentrated settlements highlights the open, ranching-oriented character of the region during the early twenty-first century.