Shannon River Basin a measurement of . When added to the Shannon's estuary this gives a total river flow of , which makes it the longest river within the River Shannon basin (from source to mouth)— longer than the Shannon Pot source. Thus the Boyle-Shannon river can be regarded as having the longest natural river flow in Ireland. The River Shannon Basin touches more than half (17) of Ireland's counties:- Limerick, Clare, Tipperary, Offaly, Westmeath, Longford, Roscommon, Kerry, Galway, Leitrim, Cavan, Sligo, Mayo, Cork, Laois, Meath and Fermanagh. There are many towns situated in the Shannon Basin. Towns and Villages (with 2011 populations)
Cavan from Portadown to Glaslough in 1957, it was found to be uneconomical to keep running the rump section from Monaghan to Cavan. All these lines (including the Cavan and Leitrim Railway) were closed by 1960. The (GNR) Virginia Road Station, from 1863 to 1958 serviced the Drogheda and Navan extension route to Kells and Oldcastle. Cooperation between the Cavan and Westmeath county councils is striving to integrate this into the national and regional development plan. Cavan railway station opened on 8 July 1856, closed for passenger services on 14 October 1957, and finally closed altogether on 1 January 1960. Cavan's