Said to be the 'Jewel In The Crown', Frongoch is reserved exclusively for occupants of the Association's caravans on Mondays, Tuesdays, Thursdays and Fridays.

Other permit holders can only fish on Wednesdays, Saturdays and Sundays.

The lake is stocked with Rainbow trout and has a good head of brown trout.

There are four boats moored on Frongoch (for boat permit holders) or caravan occupiers. Roadside parking is available and makes this lake suitable for anglers seeking ease of access. Imitative patterns and lures seem to be equally effective.

Fly fishing only.