2021 Map of Petersburg C-4 NW

About this map

Tongass National Forest dominates this coastal landscape, where the tides of the Alexander Archipelago meet the complex hydrology of the Alaska Panhandle. The waterway of Mitchell Tonka and the flows of Brown Creek define the northeastern corridor, while the lower reaches of the Castle River transition into a fractured coastline. This 2021 survey reveals a landscape largely shaped by its marine environment, featuring prominent landmarks such as Indian Point and a series of navigational features including Rookery Island, High Castle Island, and Big Castle Island. The presence of the Mitchell-Tonka road provides one of the few terrestrial points of access in an area otherwise characterized by its intricate shoreline and heavily forested interior. The map serves as a contemporary record of the shifting wetland boundaries and topographic contours of this protected wilderness area within the Petersburg Borough.