2021 Map of Sumdum B-3 NW

About this map

Endicott Arm defines the northern edge of this remote coastal landscape in Southeast Alaska, where tidewater meets the heavily glaciated terrain of the Tongass National Forest. The map illustrates a dramatic wilderness dominated by steep elevation gains and complex drainage patterns, characteristic of the fjords within the Petersburg Borough. Unlike more settled regions, this area is defined by its natural hydrology and the absence of established roads or towns, reflecting the preservation of the landscape under federal management. Researchers studying the topography of the Panhandle can trace the intricate contours that rise sharply from the waterline into high peaks, shaped by the glacial processes that have carved these waterways over millennia.