River Barrow
| River Barrow | |
|---|---|
 River Barrow at New Ross | |
 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, County Laois |
| • elevation | 350 m (1,150 ft) |
| Mouth | Celtic Sea |
• location | Waterford Harbour |
| 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) 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 Barrow is 3,067 km2 before the River Nore joins it a little over 20 km before its mouth. The river's long term average flow rate, again before it is joined by River Nore, is 37.4 cubic metres per second. At the merger with the River Nore, its catchment area is ca. 5,500 km2 and its discharge over 80 m3/s.