After the war, the border between Nagaragawa Chuo Fisheries Cooperative Association and Nagaragawa Fisheries Cooperative Association (the upstream of the junction of Nagara-gawa River, Ima-gawa River and Ibo-gawa River) became the border of Nagara and Oze.
戦後は、長良川中央漁業協同組合と長良川漁業協同組合の境界（長良川、今川、津保川合流点上流あたり）が長良と小瀬の境界となっている。