1. Culvert (stone-lined), Round-sectioned. Access shaft to control water flow at SO 2580 1185. Forms channel between upper and lower ponds.
Source: Cadw Industrial Landscape Survey.
2. Culvert linked upper reservoir (nprn 91628) to lower reservoir (nprn 91630) for water supply to Garnddyrys Forge (nprn 34137).
(Cordell Country, C.Barber)
B.A.Malaws, 13 May 1999.