Dundalk Bay

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Designated7 June 1996
Reference no.834[1]

Dundalk Bay (Irish: Cuan Dhún Dealgan) is a large (33 km2), exposed estuary on the east coast of Ireland. The inner bay is shallow, sandy and intertidal, though it slopes into a deeper area 2 km from the transitional water boundary.[2] It is predominantly influenced by the sea, though several rivers drain into the bay from the west. In the northwest corner of the bay, the Castletown River cuts through the intertidal zone and the smaller River Fane flows into the southeast corner. While the bay is largely made up of intertidal flats, there is a significant area of salt marsh on the western shore.[2] The catchment around the bay is of mixed agriculture and urban land use. The Castletown River is routinely dredged for navigation purposes for the deep water port of Dundalk.


Rivers which flow into Dundalk Bay:[3]

  • Several small flows from the Cooley Peninsula
  • Flurry River (a.k.a. River Ballymascanlan)
  • Castletown River (a.k.a. Creggan River) - 45 km (28 miles)
    • Tributary - Cully Water River (Falmore River, Dungooley River) - 23.3 km (14.5 miles)
    • Tributary - Kilcurry River (aka Forkhill River) - 18.5 km (11.5 miles)
  • Rampart River, flowing through central Dundalk to join inner Dundalk Bay
  • River Fane - 61.56 km (38.25 miles)
  • River Glyde - 55.9 km (34.7 mi)


  1. ^ "Dundalk Bay". Ramsar Sites Information Service. Retrieved 25 April 2018.
  2. ^ a b Inner Dundalk Bay. Central Fisheries Board, Ireland. Retrieved on 29 September 2008.
  3. ^ Ask About Ireland

Coordinates: 53°57′N 06°15′W / 53.950°N 6.250°W / 53.950; -6.250