This polygon equates to the site of the former 'Upper Corn Mill' (See SMR 1710). The earliest record of water power at this item dates to 1600 (Miller 1949, 96). Miller recorded that this site ceased working in 1924 and was already deteriorating and silting up by 1936. Presently the site of the Dam is built over with late 20th century metal sheds. 1 stone built gable end from the mill complex appears to survive within the buildings of the Fish and Chip shop which fronts onto Dog Leg Lane. The area lies within the area of surveyed parliamentary enclosure of Ecclesfield Common. Fragmentary legibility of mill buildings.