River Derg
The River Derg is a small river in Ireland. The river has its source in the Lough Derg and it flows to east through Castlederg and join to the River Strule to form the River Mourne. The upper reaches of the catchment are characterised by peatland, while
the lower reaches flow predominantly through farmland.
The River Derg's length is
The River Derg is known for its salmon, grilse and sea trout.
