1984 Map of Harlem NW

About this map

Thirtymile Creek carves a complex drainage system through the Northern Montana plains in this 1984 provisional survey. The landscape is defined by the erosion patterns of the East Branch Thirtymile Creek and West Forgey Creek, revealing the intricate topography of the Missouri River watershed in northern Blaine County. This mapping, compiled from 1975 aerial photography and field-checked in 1979, records the rural land divisions and natural watercourses before modern shifts in regional land management. The grid-like precision of the sections contrasts with the winding, seasonal creek beds, providing a detailed record of the physical geography of the High Plains near the Canadian border.