a stunning loch
Blaenau Ffestiniog, Gwynedd

Llyn Cwm Corsiog

managed by Cambrian Angling Association

OS Map: OL17 - Explorer

SH 66389 47092


Image © Copyright Michael Graham and licensed for reuse under this Creative Commons Licence. More information about this image at Geograph.


Any method is permitted.
The lake is at around 1,720 feet above sea level and 1 and a half hour's walk from Tanygrisiau.

At 7 acres, Cwm Corsiog is an excellent early-season lake until the weed grows in mid-summer making some of it unfishable. It can still be fished successfully after then by changing to floating lines and dry flies, casting over the weed into clear patches.

The trout are numerous and very free rising, and they run up to 3/4lb.

  • Blaenau Ffestiniog, Gwynedd
  • Brown trout
  • Lake


Permission & Tickets

Permits can be purchased online and from the following locations:

Siop Antur Stiniog,
Units 1 And 2 High Street,
Blaenau Ffestiniog.

Brethyn Blaenau,
33 High St,Blaenau Ffestiniog.
01766 831536

Siop Dewi
14-15 High St, Penrhyndeudraeth
LL48 6BN
01766 770266

Swyddfa'r Post,
Market Place.
Blaenau Ffestiniog.
01766 830115