River Barrow

River Barrow
River Barrow at Bagenalstown, County Carlow
River Barrow and nearby geography
Etymology	Proto-Celtic *boru- ("boil", "bubble")
Native name	An Bhearú (Irish)
Location
Country	Ireland
Counties	Laois, Kildare, Kilkenny, Carlow, Wexford, Waterford
Physical characteristics
Source	Slieve Bloom Mountains
• location	Glenbarrow, Laois
• elevation	350 m (1,150 ft)
Mouth	Celtic Sea
• location	Waterford Harbour, Waterford
Length	192 km (119 mi)
Basin size	3,067 km2 (1,184 sq mi) (See text)
Discharge
• average	37.4 m3/s (1,320 cu ft/s) (See text)
Basin features
River system	Three Sisters
Tributaries
• left	Figile River, Finnery River, River Greese, Lerr River, Burren River, Mountain River, Pollmounty River
• right	Owenass River, Madlin River, Ballyvalden River, Gowran River, River Nore, River Suir

The Barrow (Irish: An Bhearú)^[1] is a river in Ireland. It is one of The Three Sisters; the other two being the River Suir and the River Nore. The Barrow is the longest of the three rivers and, at 192 km (120 mi), the second-longest river in Ireland, behind the River Shannon. The catchment area of the River Barrow is 3,067 km² before the River Nore joins it a little over 20 km before its mouth.^[2] The river's long term average flow rate, again before it is joined by River Nore, is 37.4 cubic metres per second.^[2] At the merger with the River Nore, its catchment area is ca. 5,500 km² and its discharge over 80 m³/s.