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1996 Map of West of Ventana

Name: 1996 Topographic Map of West of Ventana
Creator: U.S. Geological Survey
Published: 2003
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2003

About this map

The Tohono O'odham Indian Reservation landscape is defined by vast desert basins and rugged mountain boundaries in this late-twentieth-century study. Much of the topography is shaped by the wide expanse of the Kaka Valley in the north and the Quijotoa Valley to the south, separated by ridges that rise sharply from the valley floors. Drainage patterns are dominated by seasonal watercourses like San Simon Wash and Kaka Wash, which carve through the arid terrain.

Historically significant surveying markers are present, including the path of the Gila and Salt River Meridian. In the southeastern corner, the Castle Mountains provide a dramatic vertical contrast to the surrounding flats. The map illustrates a region largely devoid of dense settlement, focusing instead on the natural landforms and traditional tribal lands that have characterized this part of Pima County for generations.