White Lough, also known as White Lake, is a freshwater lake in the northeast of Ireland. It is located in County Monaghan in the catchment of the River Erne.GeographyWhite Lough measures about 2.5km long west–east and 0.5km wide. It is located about 5km southwest of Ballybay.Natural historyFish species in White Lough include perch, roach, pike, tench and the critically endangered European eel.