RIVERS AND CANALS

Dublin's municipal authorities used to list around fifty watercourses, and the County authorities more again. The undisputed leader in the Dublin region is the Liffey, followed by major tributary, the Dodder, and by the Tolka. While others carry a fair volume of water, notably the Wad River system, the Mayne, the Santry and the Poddle, some of the other "rivers" are really just streams and the majority are culverted for some or even all of their lengths. In the greater Dublin Strategic Drainage Study, seven of the lesser rivers were considered, with the Tolka added later; the Dodder and Liffey were not included.