The River Slaney (Irish: Abhainn na Sláine, meaning “river of health”) is a large river in the southeast of Ireland. It rises on Lugnaquilla Mountain in the western Wicklow Mountains and flows west and then south through counties Wicklow, Carlow and Wexford for 117.5 km (73 mi), before entering St George’s Channel in the Irish Sea at Wexford town. The estuary of the Slaney is wide and shallow and is known as Wexford Harbour. The catchment area of the River Slaney is 1,762 km2. The long term average flow rate of the River Slaney is 37.4 Cubic Metres per second (m3/s)
Towns on the Slaney include Stratford-on-Slaney, Baltinglass, Tullow, Bunclody, Enniscorthy and Wexford. Over the river’s 117 kilometre course, it is crossed by 32 road bridges and one railway bridge.