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1989 Map of Calva

Name: 1989 Topographic Map of Calva
Creator: U.S. Geological Survey
Published: 1990
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1990

About this map

The San Carlos Indian Reservation occupies the heart of this landscape, where the Gila River winds through the Gila Valley in southeastern Arizona. The settlement of Bylas stands as the primary community hub on the eastern edge of the quadrangle, featuring multiple local cemeteries and proximity to Navajo Point. Moving northwest along the Coolidge Dam Road, the smaller settlement of Calva appears near the riverbanks, marking a point of intersection between the valley floor and the surrounding high desert drainages.

Water management and local resources are evident through features like the Gaging Station and the Gravel Pit near Bone Spring. The terrain is defined by dramatic erosional features such as Wildhorse Canyon and Fluemile Wash, while infrastructure like a Radio Facility and a Pipeline speak to the late-twentieth-century development of the region. This 1989 provisional map documents the land use and topography of Graham County just before the turn of the millennium.