In the Azuchi-Momoyama period, Hideyoshi TOYOTOMI led river improvement projects on the Yodo-gawa River including building Taiko-zutsumi Dike and ports which linked the Uji-gawa River and the Go-kawa (Hori-kawa) River, and Sanjukkoku-bune (literally, thirty-koku Ships, which were old Japanese commercial ships) operated between Fushimi and Osaka.
安土桃山時代に豊臣秀吉が太閤堤をはじめとする淀川の治水事業を行い、宇治川と濠川（ごうかわ、ほりかわ）を結ぶ形で港が設けられ、三十石船が伏見と大阪の間を行き来した。