The River Isle flows from its source near Combe St Nicholas, through Somerset, England and discharges into the River Parrett south of Langport near Midelney.

Somerset is a ceremonial county in South West England. It is bordered by the Bristol Channel, Gloucestershire, and Bristol to the north, Wiltshire to the east and the north-east, Dorset to the south-east, and Devon to the south-west. The largest settlement is the city of Bath, and the county town is Taunton.