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2018 Map of Fresno Wash

Name: 2018 Topographic Map of Fresno Wash
Creator: U.S. Geological Survey
Published: 2018
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2018

About this map

Altar Valley dominates this arid landscape in southern Arizona, where a complex network of seasonal drainages and livestock water catchments defines the land use and topography. The map illustrates how essential water management is in this environment, featuring numerous named catchments such as Pozo Hondo Tank, Pozo Nuevo Tank, and P-Y Tank scattered across the desert floor. These features are linked by a sparse network of ranch roads, including W Elkhorn Ranch Rd and Las Delicias Ranch Rd, reflecting the region's enduring ranching heritage.

To the north, the terrain becomes more varied as Sabino Canyon and the winding Fresno Wash cut through the foothills. Other significant watercourses like Chiltepines Wash and Bolas Blancas Wash channel runoff toward the valley floor. The placement of these water sources and the names on the land, such as Espinosa Ranch Rd, provide specific markers for those tracing the development of Pima County cattle country in the early 21st century.