1987 Map of Yoncalla

Tracing the transport routes reveals the importance of the narrow valley floor, where the Yoncalla railroad line and the modern path of I-5 parallel older routes like Highway 99. Further south, the map identifies small clusters of settlement at Rice Hill and the vicinity of Isadore. The distribution of features like the Sanitary Transfer Station and various quarries indicates a working landscape where timber and stone extraction intersect with rural residential life among the many drainages like Blackberry Canyon and Hayhurst Valley Creek.