1954 Map of Carlisle 1 SW

About this map

The Colorado River carves through the northwestern corner of this 1954 survey, defining a landscape dominated by the expansive Lockhart Basin. This preliminary edition, mapped by the Department of the Interior and Geological Survey, captures the area's remote character just as aerial photogrammetry was becoming a standard tool for Western cartography. Significant natural landmarks like Horsehead Rock and VABM 6058 Trough serve as primary navigational anchors in a terrain otherwise defined by deep drainage systems like Lockhart Canyon and Rustler Canyon. A lone Landing Field and scattered Stock Pond locations suggest the limited human activity of the era, primarily centered on ranching and early backcountry access in this part of San Juan County.