2017 Map of Coleman Lake

About this map

Coleman Valley and the expansive basin of Coleman Lake define this high-desert landscape in Lake County. The region is characterized by an intricate network of seasonal water sources and hydrologic features, including the sprawling Twentymile Slough and Greaser Lake to the north. These features highlight the importance of water management in this arid environment, further evidenced by man-made impoundments like Greaser Reservoir and Cahill Reservoir. Named springs such as Foskett Spring, Terry Spring, and Jackass Spring are scattered across the terrain, serving as critical landmarks for local land use. Transport through this remote section of Oregon is facilitated by Co HWY 3-15, which skirts the western edge of the valley. The map provides a detailed view of the natural drainage patterns into Coleman Cr and the complex relief of Greaser Canyon and Jones Canyon.