River Tolka

River Tolka Irish: An Tulcha
Basin features
Main source	County Meath, near Dunshaughlin
River mouth	Dublin Bay between western Clontarf and East Wall

The River Tolka (/ˈtɔːlkə/; Irish: An Tulcha, "the flood"), also spelled Tolga, is one of Dublin's three main rivers, flowing from County Meath to Fingal, within the old County Dublin, and through the north of Dublin city, Ireland (the other main rivers are the Liffey and the Dodder). By flow of water, the Tolka is the second largest river in Dublin, following the Liffey, but runs more slowly than the Dodder.

The Tolka rises east of Dunshaughlin,Co. Meath, and by-passes Dunboyne, from where it receives the Castle Stream tributary. From Clonee, where it is joined by the Clonee Stream at the eastern end of the village, it flows into County Dublin.

The river continues through Damastown and Mulhuddart, Blanchardstown, and Ashtown (southwest of Finglas), and the southern edges of Finglas itself, and then the north Dublin suburban districts of Glasnevin and Drumcondra where it comes closest to the Royal Canal near Binn's Bridge. At the southern side of Tolka Park it forms the border between Ballybough and Fairview, before entering Dublin Bay between East Wall and Clontarf.

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