2017 Map of South Sandstone Reservoir

About this map

South Sandstone Reservoir anchors this rural Montana landscape, serving as a primary water source within the Fallon County prairie. The surrounding terrain is defined by a dendritic network of seasonal drainages, including S Fork Sandstone Cr and Coon Cr, which carve through the high plains. Human activity is marked by a grid of gravel roads and access tracks such as Reservoir Trl and Sunny Bank Rd, reflecting the expansive ranching and agricultural patterns of the region. The map details the transition from the reservoir’s edge to the higher elevations near Tower Rd, where the landscape begins to descend toward Pine Cr. Notable named thoroughfares like Calumet Rd and Green Acres Rd provide connectivity between isolated homesteads and grazing lands, illustrating the sparse but deliberate settlement structure of eastern Montana.