Boyle River (Ireland)


The Boyle River is a river in Ireland. It forms part of the Shannon River Basin. It flows from Lough Gara on the Sligo/Roscommon border and flows through the town of Boyle to Lough Key. From there is flows eastwards through the village of Knockvicar to the River Shannon at Lough Drumharlow, near Carrick-on-Shannon.
The length of the Boyle River is 64.4 km. The area of the Boyle river basin is 725 km2

Boyle River Basin

The Upper Shannon catchment, above Carrick-on-Shannon has two distinct reaches: The River Shannon which rises in Cavan and the Boyle River, with its source in Mayo which have their confluence at Lough Eidin/Drumharlow approximately 4.7 km upstream of Carrick-On-Shannon.
The Boyle River has its origins in the rivers Lung and Breedoge which flow into Lough Gara. The 29 km is fed by Urlaur Lough and Errit Lough on the Mayo/Roscommon border.
The river flow from the furthest reaches of the Boyle catchment to Limerick city has a measurement of 290 km. When added to the Shannon's 102.1 km estuary this gives a total river length of 392.1 km , which makes it the longest river within the River Shannon basin, 31.6 km longer than the Shannon Pot source.