Roadford Lake, also known as Roadford Reservoir is a man-made reservoir fed by the River Wolf. It is located to the north-east of Broadwoodwidger in West Devon, eight miles (13 km) east of Launceston. It is the largest area of fresh water in the southwest of England. Operated by South West Water, it directly supplies water for North Devon. It also supplies Plymouth and South West Devon via releases into the River Tamar for abstraction at Gunnislake.