1970 Map of Rocky Coulee SE

About this map

Black Coulee dominates this rural expanse on the border of Hill and Chouteau counties. Surveyed as part of the Missouri River Basin development program, the landscape is defined by the winding course of the East Fork Black Coulee and Flat Coulee as they carve through the high plains. The map reveals the intricate drainage patterns of the era, reflecting the hydrologic focus of the U.S. Bureau of Reclamation and Geological Survey during the early 1970s. This specific sheet captures the transition from the upland flats to the steep, eroded breaks of the coulee systems, providing a detailed record of the natural topography before modern land-use changes.