Disused reservoir with the stream embanked by a 20m long concrete wall, with an overflow and concrete steps also evident. There is also a ruined brick-built and tile-lined building (pump house) measuring 2.5m by 1.5m on the eastern side. Upslope of the dam beside the current field boundary to the north is a concrete hut measuring 1m by 0.5m by 2m high. The site is marked as belonging to Holyhead and North Wales Gas and Water Corporation on the OS 25inch mapping of 1900. The site is still shown on current OS mapping. P.J. Schofield, OANorth, 12th June 2007