Loading map...

1979 Map of San Pedro

Name: 1979 Topographic Map of San Pedro
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

San Pedro and the high desert terrain of the Roskruge Mountains anchor this late 1970s survey within the Papago Indian Reservation. The landscape is defined by its arid drainage network, where Viopuli Wash and Mendoza Wash converge toward the Brawley Wash in the south. These intermittent watercourses dictate the placement of local infrastructure, including remote outposts like U-Diamond Ranch and Coleman Ranch, which depend on scattered water sources such as Townsend Well and Dill Well.

The prominence of Sharp Peak and the distinctive silhouettes of Dobbs Buttes provide natural landmarks for the region. Evidence of local habitation and land use is sparse but significant, with a Cem located near the San Pedro settlement and a Radio Facility atop Martina Mountain. The Indian Reservation Boundary cuts across the lower half of the map, separating the tribal lands from the surrounding Pima County ranching country and the foothills of the Coyote Mountains.