The Feorish River near Ballyfarnon is a tributary of the River Shannon, flowing through Counties Sligo and Roscommon in northwest Ireland. Rising in the hills north of Ballyfarnon, the river drains two lakes — Lough Skean and Lough Meelagh — before flowing eastward to join the River Shannon approximately 3km east of Keadew, Co. Roscommon. The river is characteristically slow-moving and tends to be weedy, with pooled areas providing the best habitat for fish. It offers a pleasant dual fishery, with brown trout fishing around the Ballyfarnon area and a variety of coarse species throughout its length. The river can be found running under the bridge along the Strokestown road, where it connects to the broader Shannon system.