The dam was breached in the early 90’s for safety reasons, it has since been partly rebuilt to supply a water turbine, but not to its former level.
Although not up to its past productivity, still worth a cast.
Fishes well with spinner or fly.
The best flies being :- Hares Ear Nymph, etc
Map Reference - GR SH655468.
About 1 and a half hours walk from Tanygrisiau.