1969 Map of Onehorse Slough

About this map

Onehorse Slough meanders through the central landscape, defining a complex drainage pattern where Beaver Creek and Spring Creek converge before joining the South Santiam River at the southern edge. The distribution of small settlements like Griggs, Brewster, and Whitaker along the Southern Pacific tracks illustrates the region's reliance on rail transport during the mid-20th century. In the southeast, the village of Berlin sits near the Hamilton Creek Sch, while the presence of Lebanon Dam and the Santiam Canal reflects the importance of water management for local industry and agriculture.