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1985 Map of San Ambrosia Creek

Name: 1985 Topographic Map of San Ambrosia Creek
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

The Rio Grande carves the western boundary of this landscape, marking the international border between United States and Mexico. This 1980s-era planimetric map illustrates a transition from the river's edge into the scrub and ranch lands of South Texas, where water management is the primary driver of development. A dense network of named water features, such as Bueno Agua Tank and Little Lopez Tank, reflects the vital role of artificial impoundments for livestock in this arid environment.

Remote infrastructure is highlighted by features like the Landing Strip and the Salt Well, pointing to the region's scattered agricultural and resource activity. The terrain is largely defined by drainage systems like San Ambrosia Creek and Cuervo Creek, which flow toward the Rio Grande. Notable landmarks such as Cathedral Rock and Chupadera Spring serve as critical points of reference in this sparsely populated territory crossing Maverick, Dimmit, and Webb counties.