The City Basin was a public reservoir and cistern constructed near St James' Street, Dublin around 1721 to supply the City of Dublin with water.[1] It was later expanded by connection to the adjacent and newly completed Grand Canal Harbour from 1785.
The basin had various iterations before being supplemented primarily by the Blessington Street Basin on the North side of the city around 1810 and finally being replaced by a modern water system from Vartry Reservoir around 1869.
The basin itself was later filled in and replaced by Basin Street Flats in the 1960s and Oisín Kelly park in the 1980s. The adjacent Grand Canal Harbour also fell out of use around 1960 and was filled in soon after to be finally replaced by apartments in 2023.