1979 Map of Big Valley South

About this map

The Colorado River carves a winding path through the borderlands of San Saba and Mills counties, anchoring a landscape of cattle ranching and scattered family homesteads. The Big Valley region is defined by its dramatic topographic relief, where the Mauldin Hills and prominent peaks like Wildhorse Mountain and Round Mountain rise above the river bottomlands. This 1970s survey illustrates a rural Texas economy still tied to the land and water, featuring several creek systems including Horse Creek, Rocky Creek, and the three prongs—North Prong, Middle Prong, and South Prong.