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1967 Map of Separation Canyon

Name: 1967 Topographic Map of Separation Canyon
Creator: U.S. Geological Survey
Published: 1970
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1970

About this map

Granite Gorge dominates this 1967 survey of the Arizona backcountry, where the Colorado River winds through a sequence of treacherous whitewater features within the Lake Mead National Recreation Area. The map documents a rugged landscape defined by river-mile navigation, noting specifically named hazards like Separation Rapids, Gneiss Canyon Rapids, and Bridge Canyon Rapids. High above the river, a Historical Marker sits near the head of Separation Canyon, signifying the area's importance in early exploration and Colorado River history.

Southern portions of the sheet comprise part of the Hualapai Indian Reservation, where the terrain transitions toward the high Sanup Plateau. Transportation in this era was limited to rudimentary routes, including a Pack Trail descending the gorge and a Jeep Trail traversing the reservation lands. The boundary between the recreation area and the reservation is clearly delineated, following the course of the river through the deep canyon floor.