1971 Map of Philip Smith Mountains D-1

About this map

The Ivishak River winds through the high-elevation terrain of the North Slope in this early 1970s survey. As an unsurveyed region at the time, the landscape is defined by its dramatic drainage networks rather than human infrastructure. The Saviukviayak River cuts across the southwestern reaches, fed by unnamed tributaries that drain the complex ridgelines. To the west, Flood Creek flows through a series of steep valleys, illustrating the hydrological patterns of the Brooks Range foothills. Based on 1970 aerial photography, the map reflects a wilderness state before significant modern changes, recorded under the jurisdiction of the Bureau of Land Management. The lack of roads or established trails on this sheet emphasizes the remoteness of the territory during this era of Alaskan geographical study.