2018 Map of Sumdum B-3 NW

About this map

Tongass National Forest encompasses the vast majority of this landscape in the Alaska panhandle, where steep glacial topography meets the saltwater of Endicott Arm. This 2018 survey reveals a terrain defined by ice and elevation, with contours climbing rapidly from the shoreline into the high peaks of the Coast Mountains. The map provides a precise record of the shoreline of Endicott Arm, a deep fjord that serves as a primary waterway for this coastal wilderness. Sparse in human-named landmarks but rich in environmental detail, the sheet documents the intricate drainage patterns and glacial formations characteristic of this remote portion of the Tongass National Forest near the Petersburg Borough. It serves as a modern baseline for understanding the glacial recession and coastline of this specific fjord system within the unorganized borough.