The Erriff Fishery is comprised of the Erriff River and the two small loughs of Tawnyard and Derrintin. There are two other somewhat inaccessible loughs in the upper reaches of the catchment, Loughs Glenawough and Lugacolliwe both of which hold stocks of small brown trout. Erriff River The Erriff River is some thirteen miles in length. From its discharge point into Killary Harbour, upstream for a distance of eight miles as far as Shranhlea Bridge, the river is divided into nine beats which between them can accommodate twenty-two rods per day. There is a run of spring salmon into the Erriff River during the months of April and May. The grilse appear in this river during the month of June and runs continue throughout July, August and the early part of September. The sea trout run from early July onwards. This river is one of spate conditions and rainfall at the appropriate times has a major bearing on the angling. Tawnyard Lough The grilse and sea trout run into this lough at the beginning of July but it is primarily known as a sea trout fishery. Fly fishing and dapping are the only permitted methods of fishing on Tawnyard Lough. Derrintin Lough This small lough adjacent to Tawnyard Lough holds a good stock of small brown trout. Fly-fishing is the only method allowed on Derrintin Lough.