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2021 Map of Clark Ranch

Name: 2021 Topographic Map of Clark Ranch
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

The San Pedro River valley in Pinal County is defined here by a series of intermittent washes and ranching access roads. Centered on the Clark Ranch, the map illustrates a landscape shaped by dry drainage systems such as Clark Wash, Scanlon Wash, and Gust James Wash. These desert corridors provide critical clues to the historical movement of livestock and the placement of remote homesteads across the arid basins.

Surface water is a scarce and vital resource in this region, marked by isolated points like Copper Springs and Mulberry Spring. Industrial and ranching history is etched into the terrain through specifically named routes like Whitecliff Mine Rd and Tom Rhodes Ranch Rd. The alignment of these roads along the river and its tributaries suggests a long-standing reliance on the San Pedro River corridor for connectivity between Pinal County's interior ranges and its sparse settlements.