River Derry

River Derry
An Doiríoch
The Derry flows under Clonegal Bridge
Map
Etymologydairgech, "planted with oaks"[1]
Physical characteristics
Source 
 • locationEast of Eagle Hill, near Hacketstown, County Carlow
 • elevation349 metres (1,145 ft)
MouthRiver Slaney
 • location
Kildavin, County Carlow
Length34 kilometres (21 mi)
Basin features
River systemRiver Slaney

The River Derry (Irish: An Doiríoch) is a large river in the southeast of Leinster, Ireland, a tributary of the River Slaney. It rises just south of Hacketstown, County Carlow. It flows southeast to Tinahely, being accompanied by the R747 regional road for the distance.

South of Tinahely it turns sharply and flows southwest through Shillelagh, briefly forming the border between County Wicklow and County Wexford, before becoming the border between County Wexford and County Carlow.

It flows under Clonegal Bridge at a point where it divides Clonegal, County Carlow to the west from Watch House Village, County Wexford, to the east. A few kilometres further downstream it flows into the River Slaney.

Derry Water River is a separate tributary, which rises near Tinahely and flows north-eastwards to form the Aughrim River.

  • Sign before bridge in Clonegal
    Sign before bridge in Clonegal
  • Sign with an alternate Irish name, Abha an Doire
    Sign with an alternate Irish name, Abha an Doire
  • Derry River view
    Derry River view
  1. ^ "dairgech". eDIL (An Electronic Dictionary of the Irish Language). 2019. Retrieved 8 May 2023.