2021 Map of Sumdum C-4 SW

About this map

The Tongass National Forest dominates this section of the Coast Mountains, where steep, ice-carved topography meets the intricate drainage systems of the Alaskan coast. High-elevation basins hold the Placer Lakes, which feed into a network of swift-moving watercourses including Sylvia Cr and Spruce Cr. These streams descend rapidly through dense forest cover toward the coast, illustrating the primitive, undeveloped character of the region as documented in the early twenty-first century. To the south, the Chuck River meanders through the lower elevations, marking a transition in the drainage pattern. The map's detail provides a precise view of the complex hydrology and forest boundaries that define this portion of the Alaska Panhandle, serving as a critical reference for understanding the land’s physical organization within the federal forest system.