Awa County and Mima County both in Awa Province were always troubled by drought, so he carried out an irrigation project which consisted of digging ponds and irrigation channels, which gained him fame for his benevolent rule and capable governing.
阿波国の阿波郡・美馬郡は、常に旱魃に悩まされていたが、古嗣は池と用水を築造する潅漑事業を成し遂げ、その仁政と能力の高さから広く名声を得た。