1984 Map of Dry Fork Creek

About this map

The Fort Peck Indian Reservation dominates the eastern landscape of this 1984 provisional survey, its boundary line traversing the drainage basins of Valley County. This area of eastern Montana is defined by the wandering paths of Dry Fork Creek and the West Fork Porcupine Creek, where the terrain is marked by intricate contour intervals of 10 feet. The map captures a moment in the mid-1970s and early 1980s when the landscape remained largely defined by its natural watercourses and the Indefinite Boundary of the reservation, showing a sparsely settled region primarily shaped by the geography of these significant creek systems. Researchers can trace the fine-grained topographic detail of the draws and ridges that feed into the larger Missouri River watershed.