1968 Map of Coolidge Dam

About this map

Soda Canyon carves a path through the landscape of the San Carlos Indian Reservation in Gila County, Arizona, during the late 1960s. This drainage system reveals the complex geological and hydrological patterns of the region, where seasonal water flow and structural landforms define the territory. The survey, conducted shortly after the mid-century, captures the topography of this high-desert environment before subsequent decades of environmental shift and land use changes. The absence of dense infrastructure highlights a period when natural landforms like canyons and washes were the primary landmarks for navigation and land management across this portion of the reservation.