1915 Map of Oswego

About this map

Oswego serves as the primary railhead and settlement along the northern bank of the Missouri River in this 1915 survey. Located within the Fort Peck Indian Reservation, the landscape is defined by the east-west corridor of the Great Northern railroad, which provided vital transportation across the plains of Northeast Montana. The survey captures a moment before major irrigation or dam projects altered the Missouri's course, showing the natural meandering of the river and its southern tributaries like Elk Prairie Cr and Boxelder Cr. To the north, the terrain rises into the uplands, marked by landmarks such as Three Buttes and the drainage basins of Oswego Creek and Flynn Creek. The map also preserves the political geography of the era, illustrating the boundary line between Valley and Sheridan counties as it existed in the early twentieth century.