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2017 Map of Petersburg D-3 NE

Name: 2017 Topographic Map of Petersburg D-3 NE
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Tongass National Forest dominates this coastal Alaska landscape, where the glaciers and steep slopes of the Coast Mountains meet the waters of Southeast Alaska. The intricate drainage network is defined by the Patterson River and Muddy River, which wind through marshy lowlands and tidal flats before reaching the sea. Significant freshwater bodies like Brown Cove Lake, Ess Lake, and Ruth Lake are interspersed among the dense forest and peak elevations like Pirate Peak.

The coastline is a complex of inlets and islands, featuring Thomas Bay and the open reach of Frederick Sound. Small landforms such as Spray Island and Ruth Island guard the entrance to these deeper bays. This survey captures a wild, resource-rich environment characterized by high-relief terrain and a high concentration of glacier-fed tributaries like Delta Cr and Clear Cr, illustrating the rugged hydrology of the Petersburg Borough region.