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2,091-acre Killary Harbour. Middle 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 middle trip-scale survey reach of Killary Harbour, retaining only official survey-backed seabed cells that pass the Ireland release gates. The water tops out around 135 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. Below is the species-by-species picture, pulled from the same data the map uses.
Killary Harbour - Middle maps at 2,091 acres behind 23.3 miles of shoreline. That shoreline is heavily fingered (development index 3.6) — bays, points and pockets everywhere, which multiplies the fishable edge. Roughly 27% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 7.5 mi, about 1.7 mi across. If the bite dies, Killary Harbour - Outer is 12 mi to the west.
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 |
|---|---|---|
| Bass (European Seabass) | official species listing | — |
| Mackerel (Atlantic Mackerel) | official species listing | — |
| Herring (Atlantic Herring) | official species listing | — |
| Whiting (Whiting) | official species listing | — |
| Flounder (European Flounder) | official species listing | — |
| Plaice (European Plaice) | official species listing | — |
| Sole (Common Sole) | official species listing | — |
| Thornback ray (Thornback Ray) | official species listing | — |
| Thick-lipped grey mullet (Thick-lipped Grey Mullet) | official species listing | — |
| Garfish (Garfish) | official species listing | — |
| Sea trout (Sea Trout) | official species listing | — |
Official species-evidence source.
When the water first warms, european seabass slide up into 3 to 25 ft. By summer they slide out to 2 to 30 ft, and by winter most fish are in 10 to 55 ft. If you only fish one area, make it INFOMAR measured shoal: a gravel shoal around 30 ft that scores good in fall. In summer the feeding windows fall in early morning and the evening. Keep a surface lure or a paddle-tail soft plastic rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | INFOMAR measured flat (16 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | INFOMAR measured flat (16 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | INFOMAR measured shoal (30 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
The spring pattern is a shallow one: atlantic mackerel in 5 to 45 ft. As the season builds they drop to 15 to 80 ft, wintering in 30 to 120 ft. Top water on the chart: INFOMAR measured current seam, a current seam in the 61 ft range, prime in fall. Time it for early morning and the evening. Summer baits: a feather rig or a small vertical jig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | INFOMAR measured shoal (30 ft) | Mackerel feather rig, Small silver jig |
| Summer | 15 to 80 ft | dawn & dusk | Sharp break (84 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | INFOMAR measured current seam (61 ft) | Compact silver jig, Sparse feather rig |
| Winter | 30 to 120 ft | midday | Deepest basin (123 ft) | Small deep jig |
When the water first warms, atlantic herring slide up into 5 to 25 ft. By summer they slide out to 15 to 50 ft, and by winter most fish are in 20 to 60 ft. If you only fish one area, make it INFOMAR measured flat: a feeding flat around 16 ft that scores good in spring. In summer the feeding windows fall in early morning and the evening. Keep a herring feather rig or a small silver jig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | INFOMAR measured flat (16 ft) | Small herring feather rig, Micro jig rig |
| Summer | 15 to 50 ft | dawn & dusk | open water | Herring feather rig, Small silver jig |
| Fall | 10 to 40 ft | dawn & dusk | open water | Small feather rig, Compact silver spoon |
| Winter | 20 to 60 ft | midday | open water | Small silver jig, Sparse feather rig |
Early season whiting use the shallows, holding in 15 to 55 ft. Expect a summer slide to 20 to 70 ft, then a winter hold in 15 to 70 ft. Put INFOMAR measured current seam first on the milk run — a current seam near 61 ft that grades good for fall. In summer the feeding windows fall in early morning. Tie on a small vertical jig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | INFOMAR measured current seam (61 ft) | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | INFOMAR measured channel edge (74 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | INFOMAR measured current seam (61 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | INFOMAR measured channel edge (74 ft) | Compact vertical jig |
The spring pattern is a shallow one: european flounder in 5 to 25 ft. As the season builds they drop to 6 to 35 ft, wintering in 15 to 50 ft. Top water on the chart: INFOMAR measured flat, a feeding flat in the 16 ft range, prime in spring. Time it for early morning and the evening. Summer baits: a bottom jig with spinner blade gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | INFOMAR measured flat (16 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | INFOMAR measured flat (16 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | INFOMAR measured flat (16 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | INFOMAR measured flat (16 ft) | Small bottom jig |
Early season european plaice use the shallows, holding in 8 to 35 ft. Expect a summer slide to 6 to 40 ft, then a winter hold in 25 to 80 ft. Put INFOMAR measured flat first on the milk run — a feeding flat near 16 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a light spooned bottom rig or a beaded trace and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | INFOMAR measured flat (16 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | INFOMAR measured flat (16 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | INFOMAR measured flat (16 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | INFOMAR measured channel edge (74 ft) |
Killary Harbour - Middle also holds common sole (3 to 30 ft in summer), thornback ray (10 to 65 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer), garfish (2 to 20 ft in summer), sea trout (15 to 50 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 7 structure marks on this chart. The deepest, Deepest basin, sits near 123 ft.
The complete Marine Institute Fishing Ports layer returned no port point inside this operational section. DepthScout does not substitute a nearby road, beach or community slipway as verified public fishing access; confirm legal access, parking, tides and local restrictions before visiting.
Private land and private launches need the owner's permission — please ask first.
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 Killary Harbour - Middle 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 →
Killary Harbour - Middle is about 135 ft (41 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 european seabass, atlantic mackerel, atlantic herring, whiting, european flounder, european plaice, common sole, thornback ray, thick-lipped grey mullet, garfish, sea trout roster for Killary Harbour - Middle. 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.
INFOMAR measured current seam is the top-rated area: a current seam in about 61 ft of water that rates prime for atlantic mackerel in fall. The interactive chart above rates every spot for each species and season.
For european seabass, 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 Killary Harbour - Middle 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.
Killary Harbour - Outer 12 mi · Clew Bay - Middle 15 mi · Clew Bay - Inner 17 mi · Clew Bay - West 18 mi · Blacksod Bay - South West 21 mi · Galway Bay - Aran West North 24 mi · Galway Bay - Aran East North 24 mi · Blacksod Bay - Middle 28 mi · Blacksod Bay - North 37 mi · Galway Bay - Aran West South 37 mi · Galway Bay - Central West 37 mi · Galway Bay - Aran East South 38 mi
See how Killary Harbour - Middle stacks up: best sea trout lakes in Ireland · best atlantic herring lakes in Ireland · best european flounder lakes in Ireland · best garfish 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.