Shannon

views updated Jun 08 2018

Shannon Longest river in the Republic of Ireland and the British Isles. It rises on Cuilcagh Mountain in nw County Cavan and flows s through loughs Allen, Ree, and Derg, then s across the central plain of Ireland to Limerick, and w to enter the Atlantic Ocean between Loop Head and Kerry Head. The Shannon separates Connacht from the provinces of Leinster and Munster. Length: 370km (230mi).