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1922 Map of Signal Peak

Name: 1922 Topographic Map of Signal Peak
Creator: U.S. Geological Survey
Published: 1959
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1959

About this map

The Southern Pacific Railroad cuts a diagonal path through this arid Pinal County landscape, anchoring early 20th-century settlements like Casa Grande, Arizola, and Toltec. To the north, the Gila River Indian Reservation encompasses the Sacaton Mountains, where Signal Peak and Black Butte rise above the desert floor. This 1922 survey documents an era of burgeoning agricultural infrastructure, notably the Casa Grande Florence Canal designed to divert water across the plains.

Local education and industry are marked by isolated landmarks such as Selma School, Pinal School, and the American Boy Mine. The northeastern corner preserves a piece of ancient history at Casa Grande National Monument, while the southern reaches extend toward the Papago Ind Res. Extensive dry washes, including Mc Clellan Wash and the North Branch Santa Cruz Wash, illustrate the natural drainage patterns that shaped the placement of roads like the Florence Road.