2021 Map of Sumdum A-4 SW

About this map

Kupreanof Island defines the southern reach of this coastal survey, where the peaks of the Missionary Range rise abruptly from the shoreline. Located within the expansive Tongass National Forest, the map details a maritime landscape of significant points and sheltered waters at the meeting of the Petersburg Borough boundary. The northern waters of Farragut Bay and the southern inlets of Portage Bay frame a complex network of coastal features, including Read Island and several prominent navigational landmarks like Boulder Point and Grand Point. This 2021 update from the U.S. Geological Survey provides a precise account of the shoreline and elevation contours, illustrating the unpopulated and heavily timbered character of this Southeast Alaska wilderness before any modern industrial or residential expansion.