1985 Map of Sonora

About this map

Sonora and Eldorado anchor this 1980s survey of the Edwards Plateau, where the West Texas landscape transitions into a complex network of dry draws and seasonal watercourses. The map documents an economy heavily defined by energy extraction, with extensive networks of the Eldorado Canyon Gas Field, Page Oil and Gas Field, and Hulldale Oil Field dotting the terrain. These industrial footprints sit alongside legacy military and ranching landmarks, most notably the site of Fort McKavett on the banks of the North San Saba River. The drainage patterns are intricate, characterized by long, named features like Middle Prong Valley and the Dry Devils River. An Old Railroad Grade remains visible on the landscape north of Sonora, offering a clear trace of former transit corridors. Near the southern edge, the Caverns of Sonora stands as a distinct geological landmark in a region defined by its subterranean limestone features and rugged surface draws.