The Nenagh River is a beautiful small Irish river that flows into Lough Derg, offering anglers a rewarding wild brown trout fishery in a stunning natural setting. The river is fed by crystal clear water off limestone, giving it exceptional water clarity and the classic characteristics of a limestone-influenced Irish river. Despite its modest size, the Nenagh punches well above its weight in terms of fish quality, producing wild brown trout of a noticeably better size than what you would typically expect from a small river of this type in Ireland.