River Barrow in the context of "Carlow"

Shown here are all the major rivers and tributaries of Ireland with their lengths (in kilometres and miles). Starting with the Northern Ireland rivers, and going in a clockwise direction, the rivers (and tributaries) are listed in regard to their entry into the different seas: the Irish Sea, the Celtic Sea and the Atlantic Ocean. Also shown are two tables. Table 1 shows the longest rivers in Ireland with their lengths (in kilometres and miles), the counties they flow through, and their catchment areas (in square kilometres). Table 2 shows the largest rivers in Ireland (by mean flow) in cubic metres per second.

The longest river in Ireland is the River Shannon, at 360.5 kilometres (224.0 mi). The river develops into three lakes along its course, Lough Allen, Lough Ree and Lough Derg. Of these, Lough Derg is the largest. The Shannon enters the Atlantic Ocean at the Shannon Estuary. Other major rivers include the River Liffey, River Lee, River Swilly, River Foyle, River Lagan, River Erne, River Blackwater, River Nore, River Suir, River Barrow (The Three Sisters), River Bann, River Slaney, River Boyne, River Moy and River Corrib.

The River Nore (Irish: An Fheoir [ə ˈn̠ʲoːɾʲ]) is one of the principal rivers (along with the River Suir and River Barrow) in the South-East Region of Ireland. The 140-kilometre-long (87 mi) river drains approximately 2,530 square kilometres (977 sq mi) of Leinster and Munster, that encompasses parts of three counties (Tipperary, Laois, Kilkenny). Along with the River Suir and River Barrow, it is one of the constituent rivers of the group known as the Three Sisters.

Starting in the Devil's Bit Mountain, County Tipperary, the river flows generally southeast, and then south, before its confluence with the River Barrow at Ringwood, and the Barrow railway bridge at Drumdowney, County Kilkenny, which empties into the Celtic Sea at Waterford Harbour, Waterford.

The River Suir (/ʃʊər/ SHOOR; Irish: an tSiúr [ənʲ ˈtʲuːɾˠ] or Abhainn na Siúire [ˌəun̠ʲ n̪ˠə ˈʃuːɾʲə]) is a river in Ireland that flows into the Celtic Sea through Waterford after a distance of 185 kilometres (115 mi).The catchment area of the Suir is 3,610 km.Its long-term average flow rate is 76.9 cubic metres per second (m/s), about twice the flow of either the River Barrow (37.4 m/s) or the River Nore (42.9 m/s) before these join, but a little less than the Barrow's flow when it meets the Suir 20 km downstream (over 80 m/s).

Popular with anglers, it abounds in brown trout and salmon. Although the Suir holds the record for a salmon taken from an Irish river (weighing 57 lb/26 kg, taken on a fly in 1874), as has been the case in many other Atlantic rivers, salmon stocks have been in decline in recent years.

The Three Sisters (Irish: An Triúr Deirfiúr) are three rivers in Ireland: the River Barrow, the River Nore and the River Suir. The Suir and Nore rise in the same mountainous area in County Tipperary, near the Devil's Bit, while the Barrow rises in the Slieve Bloom Mountains in County Laois. The Nore flows into the Barrow about 17 km before the Suir and Barrow join to form an estuary called Waterford Harbour east of the city of Waterford. The rivers fan out to drain a large portion of the southern part of the island, including Counties Tipperary, Carlow, Kilkenny, Wexford and Waterford, among others.

The lengths of the three rivers of the Three Sisters are the Barrow - 192 km (119 mi), the Suir - 185 km (115 mi) and the Nore - 140 km (87 mi).

County Carlow (/ˈkɑːrloʊ/ KAR-loh; Irish: Contae Cheatharlach) is a county located in the Southern Region of Ireland, within the province of Leinster. Carlow is the second smallest and the third least populous of Ireland's 32 traditional counties. Carlow County Council is the governing local authority.

The county is named after the town of Carlow, which lies on the River Barrow and is both the county town and largest settlement, with over 40% of the county's population. Much of the remainder of the population also reside within the Barrow valley, in towns such as Leighlinbridge, Bagenalstown, Tinnahinch, Borris and St Mullins. Carlow shares a border with Kildare and Laois to the north, Kilkenny to the west, Wicklow to the east and Wexford to the southeast.

Barrow rail bridge, (or the Barrow viaduct), is a pratt truss type of railway bridge that spans the river Barrow between County Kilkenny and County Wexford in the south east of Ireland. This rural landmark with a length of 2,131 ft (650 m) is the longest bridge on the river. It was second longest bridge in Ireland and the third longest rail bridge in the British Isles. Designed by Sir Benjamin Baker and built by the firm of Sir William Arrol. It is known locally as Barrow Bridge.

Part of a development to improve cross-channel passenger services. The steel truss single track bridge was built between 1902 and 1906 by English and Irish railway companies, it operated passenger services between Rosslare Harbour and Waterford until 2010. It is maintained by Iarnród Éireann, the Irish rail operator.

Waterford Harbour (Irish: Loch Dá Chaoch / Cuan Phort Láirge) is a natural harbour at the mouth of the Three Sisters; the River Nore, the River Suir and the River Barrow in Ireland. It is navigable for shipping to both Waterford and New Ross. The Port of Waterford is capable of accommodating vessels up to 32,000 tons dwt. It separates County Waterford from County Wexford on the eastern side of the estuary.

Dunmore East is a fishing village and popular holiday resort situated on the west side of the harbour and is generally considered to be the western limit. On the west side, there is also a headland called Creaden Head The eastern limit is Hook Head, marked by the Hook Lighthouse, on the Hook peninsula.

Bagenalstown (/ˈbæɡnəlztaʊn/ BAG-nəlz-town), officially named Muine Bheag (Irish: [ˌmˠɪnʲə ˈvʲaɡ]), is a small town on the River Barrow in County Carlow, Ireland.