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1950 Map of Healy A-4

Name: 1950 Topographic Map of Healy A-4
Creator: U.S. Geological Survey
Published: 1984
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1984

About this map

The drainage basins of the Alaska Range define this 1950s landscape, where the waters of the Jack River and Tsusena Creek carve through unnamed alpine peaks. The terrain is dominated by high-altitude glacial valleys and watersheds, including the headwaters of the East Fork Chulitna River and the winding South Creek. A significant high-country corridor appears at Caribou Pass, which serves as a natural gateway between the northern and southern slopes of the range.

While this area remained largely unsurveyed and unmarked by the Bureau of Land Management at the time of the 1949 aerial photography, the map detail shows the intricate hydrology of the region, including the southern flow of Portage Creek. The lack of man-made structures or roads emphasizes the wilderness character of the Matanuska-Susitna region during this mid-century period, providing a baseline for environmental historians and researchers studying the unaltered hydrology of the Interior.