1915 Map of Tule Valley

About this map

The Fort Peck Indian Reservation dominates this 1909–1910 survey of Sheridan County, revealing a landscape defined by its vital water sources and drainage systems before the mid-century developments in the region. The central topographical feature is the Tule Valley, carved by the winding course of Tule Creek and its tributary, the North Fork Tule Creek. These intermittent waterways, along with scattered features like a lone Spring, were essential landmarks for early 20th-century life on the high plains of northeastern Montana. The map illustrates the transition from the upland divides near Boxelder Creek to the deep, complex coulees that feed into the main valley, providing a clear picture of the land as it was managed by the General Land Office during this era of early settlement and reservation history.