2021 Map of Sumdum B-4 SE

About this map

Tongass National Forest dominates this coastal landscape within the Coast Mountains, where the intricate intersection of glacial terrain and saltwater is on full display. The northernmost reaches of the North Arm Port Houghton penetrate the shoreline, creating a complex maritime boundary against steep interior elevations. High-altitude landmarks like Washington Peak anchor the southern portion of the quadrangle, which is defined by significant vertical relief and dense forest cover typical of the Petersburg Borough wilderness. The map provides precise topographic data for this uninhabited stretch of the Alaskan panhandle, detailing the drainage patterns and peaks that define the region's natural geography in the early twenty-first century.