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2021 Map of Union Pass

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

USGS Topo · Published 2021

About this map

Bullhead City occupies the southwestern corner of this survey, representing a significant urban presence in the otherwise arid expanses of the Mojave Desert. The landscape is dominated by the high-relief terrain of the Black Mountains, which are bisected by Union Pass and characterized by prominent peaks like Sugarloaf Mtn and Thumb Butte. This region highlights the rugged transit corridors of northwestern Arizona, where historical routes like the Old Kingman Hwy and modern roads such as Gateway Dr wind through the mountain passes.

Water is a vital but scarce feature in this environment, appearing at isolated locations like Secret Pass Spring within the winding Secret Pass Canyon. The northern half of the map reveals the legacy of local industry through Katherine Mine Rd, which leads toward historical mining districts near Katherine Wash. The interplay between the growing settlement of Bullhead City and the surrounding wilderness illustrates the ongoing human navigation of the desert interior.