1922 Map of San Luis Creek

About this map

San Luis Ranch sits at the heart of the San Luis Gonzaga land grant area, a landscape defined by the drainage of San Luis Creek and its tributaries like Cottonwood Cr. The survey, originally conducted in 1916 and updated in the 1920s, documents the path of the Pacheco Pass Road as it cuts through the foothills of western Merced County. The terrain is characterized by notable elevations such as Basalt Hill, contrasting with the seasonal water courses of Romero Creek to the north. This map captures the region before the massive water infrastructure projects of the mid-20th century transformed the San Joaquin Valley, showing a series of springs and traditional ranch boundaries that reflect the area's pastoral roots and early California transit history.