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Recent public catches load as you reach this section.
762-acre lake near Isle of Anglesey. The lake tops out around 18 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. The rest of this page walks each species through its year, using the map's own scoring.
Llyn Alaw maps at 760 acres behind 8.1 miles of shoreline. With a 2.1 development index there's bank structure worth casting at, in moderation. Roughly 89% of the water is 15 ft or less as modeled, the band where the food chain lives. The basin spans about 2.7 mi end to end and 0.8 mi across at its widest. It sits in Isle of Anglesey. If the bite dies, Llyn yr Wyth-Eidion is 6 mi to the southeast.
Spring puts brown trout in skinny water — 2 to 18 ft is the zone. Summer fish stay in 5 to 18 ft, and winter fish hold in 3 to 18 ft. Break off the point is the standout, a drop-off at roughly 8 ft, rated prime for summer brown trout. Plan around after dark and early morning in the warm months. A spoon at the thermocline or a deep stickbait (night) covers the summer program.
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 | 2 to 18 ft chart-limited; documented 3 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 5 to 18 ft chart-limited; documented 25 to 60 ft | night & dawn | Break off the point (8 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 3 to 18 ft chart-limited; documented 5 to 30 ft | dusk & dawn | Main-lake point (8 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 3 to 18 ft chart-limited; documented 5 to 35 ft | dawn | Break off the point (8 ft) | Jigging spoon, Small stickbait (slow) |
Early season european perch use the shallows, holding in 3 to 12 ft. Summer is a 5 to 18 ft game here, winter a 5 to 18 ft one. The chart's best answer is Shallow bay flat — weed flat, 3 ft, prime for spring. Best bite is early morning. Tie on a drop-shot micro plastics or a small crankbait (perch pattern) and you're in the game.
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 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 5 to 18 ft chart-limited; documented 8 to 28 ft | dawn | Deep basin (15 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 5 to 18 ft chart-limited; documented 10 to 33 ft | midday | Deep basin (15 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 5 to 18 ft chart-limited; documented 12 to 33 ft | midday & dawn | Deep basin (15 ft) | Tungsten jig + maggots, Small balance jig |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. They move out to 5 to 18 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
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 | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 5 to 18 ft chart-limited; documented 8 to 20 ft | dawn & dusk | Break off the point (8 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (8 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 15 ft.
Llyn Alaw is about 18 ft (5 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 on Llyn Alaw. 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.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for european perch in spring. Open the map above to see every rated spot for each 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 yr Wyth-Eidion 6 mi · Llyn Cadarn 7 mi · Llyn Dinam 8 mi · Llyn Penrhyn 8 mi · Llyn Coron 10 mi · Llyn Padarn 19 mi · Llyn Peris 21 mi · Llyn Anafon 22 mi · Llyn Cwellyn 22 mi · Llyn Idwal 23 mi · Llyn Ogwen 23 mi · Llynnau Cwm Silyn 23 mi
See how Llyn Alaw stacks up: best northern pike lakes in United Kingdom · best european perch lakes in United Kingdom · best brown trout lakes in United Kingdom
More water nearby: Isle of Anglesey fishing maps (6 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.