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57-acre lake near Ceredigion. The lake tops out around 36 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. Here is how the season plays out for each species, straight from the data behind the map.
Llyn Gynon maps at 57 acres behind 1.5 miles of shoreline. With a 1.5 development index there's bank structure worth casting at, in moderation. About 61% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. End to end it runs roughly 0.5 mi, about 0.4 mi across. Ceredigion claims this one. If the bite dies, Llyn Egnant is 2 mi to the north.
In spring, brown trout run shallow here, mostly 3 to 25 ft. Summer pushes them deeper, 11 to 36 ft, and winter fish settle into 5 to 35 ft. Break off the point is the standout, a drop-off at roughly 16 ft, rated prime for summer brown trout. Time it for after dark and early morning. You won't need more than a spoon at the thermocline or a deep stickbait (night) most summer days.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (9 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 11 to 36 ft chart-limited; documented 25 to 60 ft | night & dawn | Break off the point (16 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (9 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (16 ft) | Jigging spoon, Small stickbait (slow) |
Spring european perch on Llyn Gynon hold shallow, usually 3 to 12 ft. By summer they slide out to 8 to 28 ft, and by winter most fish are in 12 to 33 ft. The chart's best answer is Deep basin — deep basin, 31 ft, prime for fall. Prime time lands in early morning. The summer box starts with a drop-shot micro plastics or a small crankbait (perch pattern).
| 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 | 8 to 28 ft | dawn | Break off the point (16 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Deep basin (31 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Deep basin (31 ft) | Tungsten jig + maggots, Small balance jig |
When the water first warms, northern pike slide up into 2 to 8 ft. By summer they slide out to 8 to 20 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Break off the point: a drop-off around 16 ft that scores prime in fall. In summer the feeding windows fall in early morning and the evening. Keep a bucktail or a weedless spoon over cabbage rigged through the warm months.
| 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 (16 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (16 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Main-lake point (9 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: arctic char sit in 4 to 15 ft that time of year. Warm water sends them out to 11 to 36 ft; cold water stacks them in 9 to 36 ft. Top water on the chart: Deep basin, a deep basin in the 31 ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a jigging spoon vertical or a tube jig (smelt) until the fish tell you otherwise.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | midday & dawn | Break off the point (16 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Summer | 11 to 36 ft chart-limited; documented 20 to 60 ft | dawn | Deep basin (31 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Fall | 8 to 30 ft | midday & dusk | Break off the point (16 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Winter | 9 to 36 ft chart-limited; documented 10 to 40 ft | midday & dawn | Deep basin (31 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
4 pieces of structure are mapped here — Deep basin, around 31 ft, is the deepest of them.
Llyn Gynon is about 36 ft (11 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.
Anglers target brown trout, european perch, northern pike, arctic char on Llyn Gynon. 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.
Deep basin is the top-rated area: a deep basin in about 31 ft of water that rates prime for european perch in fall. Scroll up to the map for the complete spot list by species and season.
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.
Llyn Egnant 2 mi · Llyn Hîr 2 mi · Llyn Teifi 2 mi · Llyn Fyrddon Fawr 4 mi · Llyn Cerrigllwydion Isaf 4 mi · Llyn Berwyn 6 mi · Maes-Llyn 7 mi · Llyn Isaf 7 mi · Llynnoedd Ieuan 10 mi · Llyn Eiddwen 12 mi · Llyn Fanod 12 mi · Llyn Clywedog 17 mi
See how Llyn Gynon stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom · best arctic char lakes in United Kingdom
More water nearby: Ceredigion fishing maps (11 charts). Browse all United Kingdom fishing maps. See every water on DepthScout. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.