The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level. Seven and a half hectares of properly exposed mountain water with small but pretty wild brown trout to about two pounds. Bank only, two-fish limit. A long way from anywhere; pick your weather.
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
Live now
Conditions on the water
Trends shown where the gauge supports them
Some readings unavailable — check directly before fishing.
How to fish · for brown trout
The brief
When · where · method · kit
Today's tactical plan
The plan
Plan A · Plan B · what to watch · bank or boat
Work Gold-ribbed Hare's Ear on the bob and Pheasant Tail Nymph on the point.
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Windy conditions suit anchoring in productive areas rather than open-water drifting.
Hatches & runs
What's on, when
Twelve months at a glance
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
6 patterns from this venue's curated pack
Evidence
Why today scores what it does
The factors driving today's verdict
- Wind conditions (windy) are not ideal for this water.
- Buzzers are in their seasonal window, boosting the chance of targeted feeding.
Llyn Melynllyn · profile
Who this water suits
Strengths · watch-outs · best for
Llyn Melynllyn, on the water
Field guide · contributor-editedLlyn Melynllyn · about
What this water is
Background · character · contributors
The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level. Seven and a half hectares of properly exposed mountain water with small but pretty wild brown trout to about two pounds. Bank only, two-fish limit. A long way from anywhere; pick your weather.
- Lake
- Ordovician volcanics
Llyn Melynllyn · directions
How to get to the water
Llyn Melynllyn

The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level.
A patient day, if you fancy it
Useful ripple, fishable wave. Take your time — read the water before you cast.
Some readings unavailable — check directly before fishing.
Conditions are away from this venue's sweet spot — it usually fishes best in ripple wind with mixed skies.
Work Gold-ribbed Hare's Ear on the bob and Pheasant Tail Nymph on the point.
If the main plan is not working, switch to a smaller, more imitative pattern fished slower and deeper. A change of drift angle can also make a difference.
Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.
Windy conditions suit anchoring in productive areas rather than open-water drifting.
- Wind conditions (windy) are not ideal for this water.
- Buzzers are in their seasonal window, boosting the chance of targeted feeding.
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level. Seven and a half hectares of properly exposed mountain water with small but pretty wild brown trout to about two pounds. Bank only, two-fish limit. A long way from anywhere; pick your weather.
- Lake
- Ordovician volcanics
The Yellow Lake — sister water to Dulyn beneath the cliffs of Foel Grach, six hundred and ten metres above sea level. Seven and a half hectares of properly exposed mountain water with small but pretty wild brown trout to about two pounds. Bank only, two-fish limit. A long way from anywhere; pick your weather.