A reservoir constructed in 1899, on unenclosed land up on the moors. Shown as unenclosed moorland on 1894 OS map. Limits of the reservoir follow the pattern of previous river courses. The reservoir is surrounded by open moorland to the present day. The origin of the moorland landscape is uncertain though this area is likely to be moorland by the Roman period (see Bevan 2003 for discussion of environmental evidence in region).