昭和初期の夷川船溜は水の透明度も高く、オイカワ・シジミなどの魚介類が多く生息するよい環境でした。明治29（1896）年に大日本武徳会游泳部が創設されて以来、昭和46（1971）年に水泳体育館（プール）が完成するまで、京都有数の水泳場として長らく親しまれ、75年間でのべ50万人以上が水泳講習を受けました。

Ebisu-Gawa Boat Reservoir (Tosuikai pool)

In the beginning of Syowa age, Ebisu-GawaBoat Reservoir had clear water, and good environment. There were many fish and shellfish, freshwater minnows and basket clams. In 1896( Meiji 29 ), the Dai Nippon Butoku kai swimming club was founded, and after that, it was popular among many people as the foremost pool until the pool gym was completed in 1971 (Showa 46). A total of 50 thousands or more took a swimming class here in 75 years.