River Boyne

River Boyne
River Boyne at Brú na Bóinne
EtymologyProto-Celtic *bou-windā, "white cow"
Native nameAn Bhóinn (Irish)
Location
CountryIreland
RegionLeinster
CountiesKildare, Offaly, Meath, Louth
Physical characteristics
SourceTrinity Well, Newberry Hall, near Carbury
 • locationCounty Kildare
 • coordinates53°21′07″N 6°57′25″W / 53.351906542854074°N 6.956809100021702°W / 53.351906542854074; -6.956809100021702
MouthIrish Sea
 • location
Between Mornington, County Meath, and Baltray, County Louth
 • coordinates
53°43′18″N 6°14′17″W / 53.72173°N 6.23813°W / 53.72173; -6.23813
Length112 km (70 mi)
Basin size2,695 km2 (1,041 sq mi)
Discharge 
 • average38.8 m3/s (1,370 cu ft/s)
Basin features
Tributaries 
 • rightRiver Blackwater

The River Boyne (Irish: An Bhóinn or Abhainn na Bóinne) is a river which flows through Leinster, Ireland. The course of the river is about 112 kilometres (70 mi) long. It rises at Eidenderry, near Offaly and flows north-east through County Offaly, County Kildare, and County Meath to reach the Irish Sea between Mornington, County Meath, and Baltray, County Louth.