Boyle River (Ireland)

The Boyle River is a river in Ireland. Forming part of the Shannon River Basin, it flows from Lough Gara on the Sligo/Roscommon border and thence through the town of Boyle to Lough Key. From there is continues eastwards through the village of Knockvicar to the River Shannon at Lough Drumharlow, near Carrick-on-Shannon.

For the river in New Zealand, see Boyle River (New Zealand).
Boyle River
Boyle River at Knockvicar.
Native nameAn Bhúill  (Irish)
Physical characteristics
Source 
 • locationLough Gara, County Mayo.
MouthRiver Shannon
 • location
Lough Eidin

The length of the Boyle River (from its source in Mayo to the Shannon) is 64.4 km (40mi).[1] The area of the Boyle river basin is 725 km2[2]

Urlaur Abbey on L. Urlaur Co. Mayo

Boyle River Basin

The Upper Shannon catchment, above Carrick-on-Shannon (area: 1,301 km2[3]) has two distinct reaches, the River Shannon (basin area: 576 km2), which rises in Cavan, and the Boyle River (basin area: 725 km2), 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 (18 mi) Lung River is fed by Urlaur Lough and Errit Lough on the Mayo/Roscommon border.[4][5]

On the bridge at Knockvicar

The river flow from the furthest reaches of the Boyle catchment to Limerick city has a measurement of 290 km (180ml).[6] When added to the Shannon's 102.1 km (63.5ml) estuary, this gives a total river length of 392.1 km (243.5ml), which makes it the longest river within the River Shannon basin (from source to mouth), 31.6 km (19.5ml) longer than the Shannon Pot source.[7]

Lung River at Crunnaun Bridge near Ballaghaderreen Co. Roscommon

See also

References
  1. Notes on River Basins: Page 64
  2. Dublin Marine Institute 1998: Studies of Irish Rivers and Lakes: Moriarty, Christopher - Table 10.1.
  3. Leitrim County Council Table 16.8
  4. Urlaur Lough
  5. Errit Lough Archived 10 September 2014 at the Wayback Machine
  6. River Habitat Survey, Fig. 2
  7. European Commission Rivers Map


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