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Best brill lakes in Ireland

54 Ireland waters hold brill, 54 mapped with real state-agency depth surveys. Ranked below by size and depth-data quality, leading with the waters in our reviewed search catalog — open any water to see exactly where to fish it: depth contours, scored spots with plain-English reasons, seasonal windows and bait picks. A sand- and shingle-associated flatfish recorded in the River Deben survey; larger fish use clean outer-estuary ground and channel shoulders.

1. Waterford Harbour — Inner — 135 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #1: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
2. Dingle Bay — Middle — 122 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #2: survey-backed contours receive the ranking's data-quality boost · 3 public access sites
3. Dingle Bay — West South — 307 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #3: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
4. Dingle Bay — West North — 344 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #4: survey-backed contours receive the ranking's data-quality boost · 1 public access site
5. Dungarvan Bay — Inner — 242 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #5: survey-backed contours receive the ranking's data-quality boost · 1 public access site
6. Galway Bay — Aran East South — 273 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #6: survey-backed contours receive the ranking's data-quality boost · 3 public access sites
7. Roaringwater Bay — West — 248 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #7: survey-backed contours receive the ranking's data-quality boost · 1 public access site
8. Kenmare Bay — Middle — 154 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #8: survey-backed contours receive the ranking's data-quality boost · 1 public access site
9. Broadhaven Bay — Middle — 324 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #9: survey-backed contours receive the ranking's data-quality boost · 1 public access site
10. Galway Bay — Aran West North — 281 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #10: survey-backed contours receive the ranking's data-quality boost · 1 public access site
11. Kenmare Bay — Outer — 260 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #11: survey-backed contours receive the ranking's data-quality boost · 1 public access site
12. Donegal Bay — Central West North — 197 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #12: survey-backed contours receive the ranking's data-quality boost · 1 public access site
13. Galway Bay — Aran East North — 214 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #13: survey-backed contours receive the ranking's data-quality boost · 1 public access site
14. Cork Harbour — West — 147 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #14: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
15. Clonakilty and Courtmacsherry Bays — Clonakilty — 291 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #15: survey-backed contours receive the ranking's data-quality boost · 1 public access site
16. Bantry Bay — Inner South — 214 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #16: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
17. Dublin Bay — Middle — 109 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #17: survey-backed contours receive the ranking's data-quality boost · 2 public access sites
18. Roaringwater Bay — East — 300 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #18: survey-backed contours receive the ranking's data-quality boost · 1 public access site
19. Roaringwater Bay — Middle — 256 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #19: survey-backed contours receive the ranking's data-quality boost · 1 public access site
20. Galway Bay — Central East — 82 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #20: survey-backed contours receive the ranking's data-quality boost · 1 public access site
21. Cork Harbour — East — 255 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #21: survey-backed contours receive the ranking's data-quality boost · 1 public access site
22. Sheephaven Bay — East — 175 ft max · survey depth data · European Flounder, Garfish, European Seabass, European PlaiceWhy #22: survey-backed contours receive the ranking's data-quality boost · 1 public access site
23. Youghal Bay — Outer — 235 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #23: survey-backed contours receive the ranking's data-quality boost · 1 public access site
24. Wexford Harbour and Rosslare Bay — Wexford Inner — 147 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #24: survey-backed contours receive the ranking's data-quality boost · 1 public access site
25. Wexford Harbour and Rosslare Bay — Wexford Outer North — 56 ft max · survey depth data · Atlantic Herring, European Flounder, Garfish, European SeabassWhy #25: survey-backed contours receive the ranking's data-quality boost · 1 public access site

…plus 29 more Ireland waters holding brill.

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When to fish brill in Ireland

• Spring 10–45 ft — Work a legal moving bait over clean sand or shingle beside the lower channel.
• Summer 6–50 ft — The surveyed Deben fish was juvenile; do not read that single event as adult abundance or a catch promise.
• Fall 12–60 ft — Shift toward the lower-estuary channel and deeper clean ground as water cools.
• Winter 30–90 ft — Most fish are deeper or offshore; winter Deben marks are low confidence.

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Brill elsewhere: France · Denmark