Over 50 miles (80 km) long, the River Blackwater courses through the Northern Irish countryside to form the boundaries between the Armagh, South Tyrone, and Monaghan districts. The Blackwater, as well as its tributaries, the Oona, the Torrent, and the Ballygawley, are renowned for their excellent stock of brown trout, salmon, and dollaghan (the native trout of Lough Neagh). Bream and roach are common in the Lower Blackwater, below Benburb.

The local fishing clubs have spent recent years developing and implementing methods of improving the river’s habitat for fishing and other flora and fauna. This programme of work has included isolation of native river trout for re-stocking, and attempted restoration of the historic run of salmon.

The salmon runs in the River Blackwater are delayed throughout the year by the journey of the fish through Lough Neagh before reaching the Blackwater.

Various angling clubs and associations have responsibility for the different parts of the Blackwater and its tributaries:

Clogher and District Angling Club: from Clogher and Lough Negh to Favour Royal Forest, which is situated between Augher and Aughnacloy.

Aughnacloy and District Anglers: from Favour Royal Forest to Caledon, although much of this part of the river is owned privately by the Caledon Estate.

Armagh Fisheries and DCAL: Blackwatertown.