Llyn Cwm Foel
Blaenau Ffestiniog, Gwynedd
The dam was breached in the early 90’s for safety reasons, it has since been partly rebuilt to supply a water turbine, b ...
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Llyn Cwm Corsiog
Water managed by Cambrian Angling Association
Type
Lake
Species
Brown trout
High alkalinity
High alkalinity indicates water fertility and can signal the presence of larger trout. Fish in alkaline waters have a wider variety of invertebrates to feed on.
Shallow
The depth of a lake has significant impacts on its ecology. Reduced heat and light in deep lakes inhibit algal growth.
Low shoreline complexity
A lake with a high shoreline complexity will have numerous bays, points and peninsulas.
Mid elevation
Lakes at a higher altitude can take longer to warm up during the season and may not fish well until summer.
Very small
Larger lakes with good spawning often contain lots of smaller trout. Smaller lakes with limited spawning can produce larger trout.
Llyn Cwm-corsiog lies above Tanygrisiau, set among open upland slopes at about 520 m. It is a very small, shallow water of just over 3 hectares, with high alkalinity and a simple outline.
Any method is permitted. At its best early in the season; by mid-summer weed growth makes some areas unfishable, though a floating line and dry flies cast over the weed into clear patches continue to take fish. The trout are numerous and very free rising, and they run up to 3/4 lb.
Access is from Tanygrisiau. A footpath heads northwest, climbing steadily for just under three kilometres with around 240 metres of ascent to reach the Llyn from the east; allow about an hour and a half for the walk.
Duration
00:59
Distance
2.93 km
Ascent
238.5m
Difficulty
43 / 100
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