2017 Map of Chandalar B-5 NW

About this map

S Fork Koyukuk River flows through the southeastern portion of this remote Alaskan interior landscape, which is defined by an intricate network of drainages and high-elevation terrain. Named water features like Holy Moses Cr, Shamrock Cr, and Wakeup Cr indicate a history of local nomenclature likely tied to early prospecting or travel through these valleys. The topography is anchored by Bob Johnson Lake in the north and the smaller S Fork Lake to the east. Smaller tributaries such as Jim Pup and California Cr suggest the kind of small-scale drainage mapping essential for navigating the Yukon-Koyukuk region. This 2017 survey by the U.S. Geological Survey provides a precise view of the hydrology and elevation before any modern infrastructure altered these corridors.