The River Barrow is the second longest river in Ireland, after the River Shannon. The river runs for 192 km from its source in Glenbarrow in the Slieve Bloom Mountains in Co.Laois, the midlands of Ireland and enters the sea at Wexford Harbour estuary, New Ross. The area covered by the River Barrow is 3,067 km2. The Barrow has long been recognised as a unique area of great natural beauty with high amenity value.
The water contains limestone bedrock and the lower half of this river is mainly coarse angling. The Barrow river is a mixed fishery facilitating both game and coarse angling. Brown Trout have been caught from this river weighing up to two pound. The river is not noted for its Salmon fishing but small numbers do be caught annually with autumn being the best season. The River Barrow is one of few rivers in Ireland that get a run of Twaite Shad. These fish migrate into the tidal waters of St. Mullins to spawn during April and May, they can be caught by spinning and also caught with a fly. Twaite Shad provide great sport fishing and put up an amazing fight. Competitions take place annually in St. Mullins which attracts anglers from all over Ireland. An excellent stock of Pike can be found in this river with it holding the Irish river Pike fishing record of 42 lbs caught in 1964. Other coarse species include Perch, Bream, Roach, and Hybrids. Dace recently entered the river Barrow and are now an abundant species in this river.