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1955 Map of Demarcation Point D-4

Name: 1955 Topographic Map of Demarcation Point D-4
Creator: U.S. Geological Survey
Published: 1970
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1970

About this map

The Arctic National Wildlife Range dominates this mid-century topographic survey of the North Slope, revealing an intricate network of waterways flowing toward the Beaufort Sea. The landscape is defined by the braided channels of the Jago River and the steady progress of the Niguanak River, which winds around the prominent Niguanak Ridge. This terrain, mapped from 1955 aerial photography by the Army Map Service, consists of countless small lakes and ponds across a low-lying tundra environment.

Remote and largely untouched by industrial infrastructure during this era, the area is crossed by the Okerokovik River, Sikrelurak River, and Angun River. The survey highlights a moment before modern development, where land lines represent unsurveyed and unmarked locations predetermined by the Bureau of Land Management. The map serves as a primary record of the complex hydrography and natural drainage patterns of this Alaskan frontier.