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19,369-acre The Rosses and Gweedore Bay. Outer Islands saltwater fishing map with official INFOMAR survey bathymetry, measured-cell fishing spots, official fish evidence, seasonal forage guidance, access context and current-rule links. The outer islands trip-scale survey reach of The Rosses and Gweedore Bay, retaining only official survey-backed seabed cells that pass the Ireland release gates. The water tops out around 236 ft. The depth chart comes from INFOMAR (Geological Survey Ireland and Marine Institute) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The rest of this page walks each species through its year, using the map's own scoring.
The Rosses and Gweedore Bay - Outer Islands maps at 19,382 acres behind 31.2 miles of shoreline. With a 1.6 development index there's bank structure worth casting at, in moderation. 0% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 11.9 mi of water from one end to the other, 5.9 mi at the beam. Gweebarra Bay - Outer sits 12 mi south — the closest neighbouring chart.
Marine Institute spawning, nursery, observation and range layers support the principal surveyed pelagic and groundfish. IFI's national and regional sea-angling publications support additional habitat-compatible recreational targets. This is occurrence and search guidance, not equal abundance, a section-level population estimate or a promised catch. The roster may combine exact-water monitoring with habitat-filtered official regional evidence; it does not imply that every species is equally abundant throughout the mapped section.
| Species | Evidence basis | Count / date |
|---|---|---|
| Mackerel (Atlantic Mackerel) | official species listing | — |
| Pollack (Atlantic Pollock) | official species listing | — |
| Coalfish (Saithe (Coalfish)) | official species listing | — |
| Haddock (Haddock) | official species listing | — |
| Whiting (Whiting) | official species listing | — |
| Cod (Atlantic Cod) | official species listing | — |
| Plaice (European Plaice) | official species listing | — |
| Flounder (European Flounder) | official species listing | — |
| Thornback ray (Thornback Ray) | official species listing | — |
| Brill (Brill) | official species listing | — |
| Ling (Ling) | official species listing | — |
| Bass (European Seabass) | official species listing | — |
| Garfish (Garfish) | official species listing | — |
Official species-evidence source.
Spring puts atlantic mackerel in skinny water — 5 to 45 ft is the zone. Warm water sends them out to 15 to 80 ft; cold water stacks them in 30 to 120 ft. INFOMAR measured channel edge is the standout, a channel edge at roughly 129 ft, rated good for winter atlantic mackerel. Plan around early morning and the evening in the warm months. A feather rig or a small vertical jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | open water | Mackerel feather rig, Small silver jig |
| Summer | 15 to 80 ft | dawn & dusk | open water | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | open water | Compact silver jig, Sparse feather rig |
| Winter | 30 to 120 ft | midday | INFOMAR measured channel edge (129 ft) | Small deep jig |
Spring puts atlantic pollock in skinny water — 8 to 100 ft is the zone. As the season builds they drop to 12 to 150 ft, wintering in 35 to 220 ft. Summer atlantic pollock concentrate at Shoreline point, a prime-rated point around 93 ft. Warm-month bites cluster around early morning and the evening. A surface plug or a baitfish swimbait covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 100 ft | dawn & dusk | Shoreline point (93 ft) | Sandeel-pattern lure, Soft-plastic shad |
| Summer | 12 to 150 ft | dawn & dusk | Shoreline point (93 ft) | Surface plug, Baitfish swimbait |
| Fall | 15 to 160 ft | dawn | Shoreline point (93 ft) | Metal jig, Minnow plug |
| Winter | 35 to 220 ft | midday | Sharp break (168 ft) | Slow metal jig, Weighted soft plastic |
Spring saithe (coalfish) on The Rosses and Gweedore Bay - Outer Islands hold shallow, usually 15 to 160 ft. They move out to 23 to 236 ft in summer and finish the year down in 33 to 236 ft. Put INFOMAR measured current seam first on the milk run — a current seam near 105 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a speed jig or a heavy paddletail.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 160 ft | dawn & dusk | INFOMAR measured current seam (105 ft) | Slim metal jig, Paddletail |
| Summer | 23 to 236 ft | dawn & dusk | Sharp break (168 ft) | Speed jig, Heavy paddletail |
| Fall | 20 to 220 ft | dawn & dusk | INFOMAR measured current seam (105 ft) | Metal jig, Baitfish swimbait |
| Winter | 33 to 236 ft | midday | Deepest basin (236 ft) | Heavy vertical jig |
Come spring, look for haddock tight to the bank in 35 to 220 ft. They move out to 44 to 236 ft in summer and finish the year down in 41 to 236 ft. If you only fish one area, make it Deepest basin: a deep basin around 236 ft that scores prime in summer. Best bite is early morning. A compact metal jig or a bottom rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 35 to 220 ft | dawn | Deepest basin (236 ft) | Small bottom jig, Beaded trace |
| Summer | 44 to 236 ft | dawn | Deepest basin (236 ft) | Compact metal jig, Bottom rig |
| Fall | 41 to 236 ft | midday | INFOMAR measured flat (99 ft) | Small vertical jig |
| Winter | 41 to 236 ft | midday | Deepest basin (236 ft) | Deep bottom jig |
Come spring, look for whiting tight to the bank in 15 to 55 ft. They move out to 20 to 70 ft in summer and finish the year down in 15 to 70 ft. Best bite is early morning. A small vertical jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | open water | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | open water | Small vertical jig |
| Fall | 10 to 60 ft | dusk | open water | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | open water | Compact vertical jig |
Spring puts atlantic cod in skinny water — 20 to 100 ft is the zone. As the season builds they drop to 45 to 180 ft, wintering in 50 to 220 ft. Winter atlantic cod concentrate at Deepest basin, a good-rated deep basin around 236 ft. Warm-month bites cluster around early morning. A heavy metal jig or a large soft-plastic jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 20 to 100 ft | dawn | INFOMAR measured current seam (105 ft) | Diamond jig, Heavy bucktail |
| Summer | 45 to 180 ft | dawn | Sharp break (168 ft) | Heavy metal jig, Large soft-plastic jig |
| Fall | 25 to 140 ft | dawn | INFOMAR measured channel edge (129 ft) | Diamond jig, Bucktail with teaser |
| Winter | 50 to 220 ft | midday | Deepest basin (236 ft) | Heavy vertical jig |
The Rosses and Gweedore Bay - Outer Islands also holds european plaice (6 to 40 ft in summer), european flounder (6 to 35 ft in summer), thornback ray (10 to 65 ft in summer), brill (6 to 50 ft in summer), ling (39 to 236 ft in summer), european seabass (2 to 30 ft in summer), garfish (2 to 20 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 7 features, led in depth by Deepest basin at roughly 236 ft.
Access data: Marine Institute — Fishing Ports. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Ireland waters are set by the Inland Fisheries Ireland (current sea-angling regulations) — and special regulations can apply to The Rosses and Gweedore Bay - Outer Islands specifically, so confirm the current rules before you fish. Check the current national and water-specific rules before every trip, including bass measures, the 2026 recreational pollack controls, salmon and sea-trout licences and river-specific status, protected areas, harbour directions, private land and local signs. A mapped fishing port or measured seabed feature is not permission to fish, park, launch or enter a working harbour.
Check the official Ireland fishing regulations →
Department of Climate, Energy and the Environment (2026 salmon and sea-trout status) →
Check special-area and water-specific rules →
Check official shore-access information →
The Rosses and Gweedore Bay - Outer Islands is about 236 ft (72 m) deep at its deepest point. The depth chart comes from INFOMAR (Geological Survey Ireland and Marine Institute) bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Marine Institute and Inland Fisheries Ireland informs the atlantic mackerel, atlantic pollock, saithe (coalfish), haddock, whiting, atlantic cod, european plaice, european flounder, thornback ray, brill, ling, european seabass, garfish roster for The Rosses and Gweedore Bay - Outer Islands. The mixed roster combines exact-water records where available with habitat-filtered regional evidence; not every species is documented at this exact water, and it is not a promise of equal abundance or a catch on a particular trip.
Shoreline point is the top-rated area: a point in about 93 ft of water that rates prime for atlantic pollock in summer. Open the map above to see every rated spot for each species and season.
For atlantic mackerel, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on The Rosses and Gweedore Bay - Outer Islands is regulated by the Inland Fisheries Ireland (current sea-angling regulations). Check the official Ireland regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Gweebarra Bay - Outer 12 mi · Sheephaven Bay - West 16 mi · Donegal Bay - Central West North 23 mi · Donegal Bay - West North 24 mi · Sheephaven Bay - East 28 mi · Donegal Bay - Central East 34 mi · Donegal Bay - Central West South 35 mi · Mulroy Bay - Outer 38 mi · Donegal Bay - West South 38 mi · Mulroy Bay - Inner 40 mi · Lough Swilly - Middle 42 mi · Lough Foyle - Inner 42 mi, IRL/UK
See how The Rosses and Gweedore Bay - Outer Islands stacks up: best european flounder lakes in Ireland · best garfish lakes in Ireland · best european seabass lakes in Ireland · best european plaice lakes in Ireland
Browse all Ireland fishing maps. See every water on DepthScout. Bathymetry credit: INFOMAR (Geological Survey Ireland and Marine Institute) INFOMAR All Survey bathymetry mosaic (Source-survey vertical references retained in the INFOMAR All Survey mosaic; 100% measured, 0% source-interpolated). 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.