2020 Map of Sprole

About this map

The Missouri River carves a complex, meandering path through this high-plains landscape, defining the jagged border between Roosevelt County and Richland County. The small settlement of Sprole sits along a straight corridor of transportation north of the river, where BIA Rte 1 and its associated road network provide access to the surrounding plateaus. The river itself is dominated by significant landforms such as White Shield Island and Skinners Island, while Poplar Bridge serves as a critical crossing point over the active waterway. Numerous drainages, including Colgan Creek, First Creek, and Bilger Creek, cut through the southern badlands, illustrating a highly eroded topography that drains northward toward the main Missouri channel. This survey documents the intersection of tribal land management and county boundaries in a region where the river's historical shifts have created a complex patchwork of island features like Ivys Island.