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Fishing Llyn Goddionduon: what the data says
15-acre lake near Conwy. The lake tops out around 23 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. What the data behind the map says about each species, season by season:
Traced from the shoreline, Llyn Goddionduon runs 15 acres with 0.8 miles of edge. A shoreline index of 1.4 says round and simple: fish relate to depth changes here, not shoreline features. About 77% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone.
Brown Trout fishing at Llyn Goddionduon
Early season brown trout use the shallows, holding in 3 to 23 ft. Summer fish stay in 7 to 23 ft, and winter fish hold in 3 to 23 ft. The chart's best answer is Break off the point — drop-off, 10 ft, prime for summer. Best bite is after dark and early morning. Tie on a spoon at the thermocline or a deep stickbait (night) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 23 ft | dawn & dusk | Main-lake point (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 7 to 23 ft | night & dawn | Break off the point (10 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 4 to 23 ft | dusk & dawn | Main-lake point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 3 to 23 ft | dawn | Break off the point (10 ft) | Jigging spoon, Small stickbait (slow) |
European Perch fishing at Llyn Goddionduon
Spring puts european perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 7 to 23 ft; cold water stacks them in 7 to 23 ft. Deep basin is the standout, a deep basin at roughly 20 ft, rated prime for fall european perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small crankbait (perch pattern) covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | open water | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 7 to 23 ft | dawn | Deep basin (20 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 7 to 23 ft | midday | Deep basin (20 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 7 to 23 ft | midday & dawn | Deep basin (20 ft) | Tungsten jig + maggots, Small balance jig |
Northern Pike fishing at Llyn Goddionduon
Spring puts northern pike in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Fall northern pike concentrate at Break off the point, a prime-rated drop-off around 10 ft. Warm-month bites cluster around early morning and the evening. A bucktail or a weedless spoon over cabbage covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | open water | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (10 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (10 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Main-lake point (8 ft) | Tip-ups, Large jigging spoon |
Notable structure
- Deep basin: deep basin, around 20 ft
- Break off the point: drop-off, around 10 ft
- Main-lake point: point, around 8 ft
Common questions
How deep is Llyn Goddionduon?
Llyn Goddionduon is about 23 ft (7 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
What fish are in Llyn Goddionduon?
Anglers target northern pike, european perch, brown trout on Llyn Goddionduon. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Where is the best fishing spot on Llyn Goddionduon?
Deep basin is the top-rated area: a deep basin in about 20 ft of water that rates prime for european perch in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Llyn Goddionduon?
For brown trout, the summer bite is best in after dark and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Llyn Bychan 0 mi · Llyn Bodgynydd 1 mi · Llyn Geirionydd 2 mi · Llyn Crafnant 2 mi · Llyn y Parc 2 mi · Llyn Cowlyd Reservoir 3 mi · Llyn Eigiau Reservoir 5 mi · Ffynnon Llugwy Reservoir 5 mi · Llynau Diwaunedd 5 mi · Llyn Ogwen 6 mi · Llyn Bochlwyd 6 mi · Llyn Cwmffynnon 7 mi
See how Llyn Goddionduon stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom
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