2015 Map of Guasti

About this map

Ontario and the eastern San Bernardino Valley are documented here in high detail, showcasing the region's transition from agricultural foundations to a major transportation and logistics hub. The expansive Ontario International Airport dominates the central portion of the map, surrounded by named settlements like Guasti, Etiwanda, and Rochester. These communities are connected by a dense grid of thoroughfares, including historic routes such as Arrow Rte and Foothill Blvd. The landscape is physically defined by the drainage patterns of Cucamonga Creek and Day Creek, which flow south from the mountains toward Jurupa Valley. In the southeast, the Jurupa Mountains provide a sharp contrast to the developed plains. This map records the integration of established neighborhoods like Alta Loma with newer industrial and educational developments, including Platt College Ontario.