2017 Map of Bourne

About this map

Sumpter lies at the southern edge of this high-elevation terrain, where the McCully Fork and Cracker Cr converge before feeding into the Sumpter Reservoir. The landscape transitions northward into the steep, glaciated peaks of the Elkhorn Mountains, dominated by the Whitman National Forest. The small settlement of Bourne is positioned deep within this drainage system, surrounded by numerous named gulches and ridges that speak to the area's prospecting history. High-altitude water bodies like Summit Lake and Killamacue Lake sit near the crests of Chloride Ridge and Elkhorn Ridge. The mapping of dozens of survey parcels, such as PB 42 and PB 50, indicates a complex history of land claims and resource management throughout the narrow valleys of Sardine Gulch and Borden Gulch.