Cavetown LoughCavetown Lough is a freshwater lake in the west of Ireland. It is located in County Roscommon in the catchment of the upper River Shannon.GeographyCavetown Lough measures about long and wide. It is located about south of Boyle and west of Carrick-on-Shannon.Natural historyFish species in Cavetown Lough include perch, roach, pike, bream and the critically endangered European eel. The lake was previously also a trout fishing destination.