Sign inSign up free Sign inSign up free Sign inSign up freeSalt water depth chart
Today's read
Recent public catches load as you reach this section.
32,882-acre Baie de Saint-Brieuc. North West 4 France saltwater fishing map with official SHOM 100 m bathymetry, source-qualified fishing spots, official regional fish evidence, seasonal forage guidance, public shore-use context and current-rule links. The broad Saint-Brieuc bay, including estuary mouths, drying flats, rocky points and outer-bank approaches. This page covers the north west 4 angler-scale survey window. The water tops out around 145 ft. The depth chart comes from Shom (Service hydrographique et océanographique de la Marine) bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The season-by-season read for each species follows, from the map's own numbers.
The outline encloses 32,854 acres, worked by 51.9 miles of shoreline. With a 2 development index there's bank structure worth casting at, in moderation. Roughly 2% of the water is 15 ft or less, the band where the food chain lives. Figure 18.9 mi of water from one end to the other, 11.2 mi at the beam. Its nearest charted neighbour, Golfe Normand-Breton - North West 1, is 6 mi to the southeast.
Baie de Saint-Brieuc — North West 4, France : carte SHOM officielle jusqu’à 44 m; spots pour bar commun, sole commune. Pour préparer la pêche, jamais pour naviguer. Les profondeurs et les points de structure proviennent de la grille bathymétrique officielle du Shom. Les données servent à préparer la pêche et ne doivent jamais être utilisées pour la navigation.
Regional occurrence supports a search target, not equal abundance, child-specific catch rate, retention permission or a promised catch. Current national, EU, regional, protected-area and species rules always control. 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 |
|---|---|---|
| bar commun (European Seabass) | official species listing | — |
| sole commune (Common Sole) | official species listing | — |
| flet commun (European Flounder) | official species listing | — |
| plie commune (European Plaice) | official species listing | — |
| merlan (Whiting) | official species listing | — |
| orphie (Garfish) | official species listing | — |
| maquereau commun (Atlantic Mackerel) | official species listing | — |
| mulet lippu (Thick-lipped Grey Mullet) | official species listing | — |
| mulet cabot (Flathead Grey Mullet) | official species listing | — |
| barbue (Brill) | official species listing | — |
| raie bouclée (Thornback Ray) | official species listing | — |
| anguille européenne (European Eel) | official species listing | — |
| saumon atlantique (Atlantic Salmon) | official species listing | — |
Official species-evidence source.
Early season european seabass use the shallows, holding in 3 to 25 ft. Summer is a 2 to 30 ft game here, winter a 10 to 55 ft one. The chart's best answer is SHOM-grid shoal — gravel shoal, 26 ft, good for fall. Best bite is early morning and the evening. Tie on a surface lure or a paddle-tail soft plastic and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Feeding flat (25 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | Feeding flat (25 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid shoal (26 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
Start shallow in spring: common sole sit in 6 to 30 ft that time of year. They don't go far with the seasons — 3 to 30 ft covers summer, 20 to 70 ft covers winter. The spot to know is Feeding flat, a feeding flat in about 25 ft of water that rates prime for common sole in spring. Warm-month bites cluster around the evening. Throw a light rolling-lead rig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 30 ft | dusk | Feeding flat (25 ft) | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | Feeding flat (25 ft) | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | Feeding flat (25 ft) | Compact bottom jig |
| Winter | 20 to 70 ft | night | SHOM-grid channel edge (73 ft) |
In spring, european flounder run shallow here, mostly 5 to 25 ft. Midsummer fish sit out in 6 to 35 ft before dropping to 15 to 50 ft for winter. Spring european flounder concentrate at Feeding flat, a prime-rated feeding flat around 25 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a bottom jig with spinner blade most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | Feeding flat (25 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | Feeding flat (25 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | Feeding flat (25 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Feeding flat (25 ft) | Small bottom jig |
When the water first warms, european plaice slide up into 8 to 35 ft. Summer is a 6 to 40 ft game here, winter a 25 to 80 ft one. Start at Feeding flat. It's a feeding flat holding about 25 ft of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a light spooned bottom rig or a beaded trace rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | Feeding flat (25 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | Feeding flat (25 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | Feeding flat (25 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | SHOM-grid channel edge (73 ft) |
When the water first warms, whiting slide up into 15 to 55 ft. Summer is a 20 to 70 ft game here, winter a 15 to 70 ft one. Start at SHOM-grid current seam. It's a current seam holding about 58 ft of water and rates good come fall. The feeding windows run early morning. Keep a small vertical jig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | SHOM-grid current seam (58 ft) | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | SHOM-grid channel edge (73 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | SHOM-grid current seam (58 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | SHOM-grid channel edge (73 ft) | Compact vertical jig |
Spring garfish on Baie de Saint-Brieuc - North West 4 hold shallow, usually 1 to 15 ft. By summer they slide out to 2 to 20 ft, and by winter most fish are in 20 to 60 ft. The chart's best answer is SHOM-grid current seam — current seam, 58 ft, good for winter. Prime time lands in early morning and the evening. The summer box starts with a slim casting spoon or a surface-skipping fly.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & midday | open water | Slim silver spoon, Small inline spinner |
| Summer | 2 to 20 ft | dawn & dusk | open water | Slim casting spoon, Surface-skipping fly |
| Fall | 8 to 30 ft | dawn & dusk | open water | Weighted slim spoon, Small silver jig |
| Winter | 20 to 60 ft | midday | SHOM-grid current seam (58 ft) |
Baie de Saint-Brieuc - North West 4 also holds atlantic mackerel (15 to 80 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer), flathead grey mullet (1 to 22 ft in summer), brill (6 to 50 ft in summer), thornback ray (10 to 65 ft in summer), european eel (6 to 28 ft in summer), atlantic salmon (20 to 70 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Count 8 structure marks on this chart. The deepest, Deepest basin, sits near 143 ft.
No official 2025 EEA designated bathing-water point matched within 400 metres of this SHOM-grid shoreline. This is an access-evidence gap, not a statement that public fishing access does not exist. Verify local fishing rights, land ownership, posted restrictions, protected areas, tidal and surf safety, and municipal permission before entry.
Private land and private launches need the owner's permission — please ask first.
Season dates, license requirements, and size and bag limits for France waters are set by the Légifrance (current French recreational sea-fishing minimum sizes) — and special regulations can apply to Baie de Saint-Brieuc - North West 4 specifically, so confirm the current rules before you fish. French recreational sea-fishing rules combine current national and European species measures with façade, prefectural, marine-protected-area, harbour and local access controls. Check live minimum sizes, quotas, seasonal or method closures, marking requirements and any no-take zone before every trip. A SHOM contour, fishing-spot marker or designated bathing-water lead is planning context only and never permission to fish, retain a catch, park, launch or enter restricted shore or port property.
Check the official France fishing regulations →
French Ministry for Ecological Transition — recreational sea fishing →
Check special-area and water-specific rules →
Check official shore-access information →
Baie de Saint-Brieuc - North West 4 is about 145 ft (44 m) deep at its deepest point. The depth chart comes from Shom (Service hydrographique et océanographique de la Marine) bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Ifremer CGFS and coastal estuary monitoring regional survey evidence informs the european seabass, common sole, european flounder, european plaice, whiting, garfish, atlantic mackerel, thick-lipped grey mullet, flathead grey mullet, brill, thornback ray, european eel, atlantic salmon roster for Baie de Saint-Brieuc - North West 4. 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.
Feeding flat is the top-rated area: a feeding flat in about 25 ft of water that rates prime for common sole in spring. Scroll up to the map for the complete spot list by 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 Baie de Saint-Brieuc - North West 4 is regulated by the Légifrance (current French recreational sea-fishing minimum sizes). Check the official France regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Golfe Normand-Breton - North West 1 6 mi · Baie de Saint-Brieuc - North West 3 8 mi · Baie de Saint-Brieuc - South West 4 14 mi · Golfe Normand-Breton - North West 2 14 mi · Golfe Normand-Breton - South West 1 16 mi · Saint-Malo and Rance - North West 17 mi · West Cotentin Coast - South 1 West 17 mi · Baie de Saint-Brieuc - South West 3 17 mi · Baie de Saint-Brieuc - North West 2 18 mi · West Cotentin Coast - South 2 West 21 mi · Baie de Saint-Brieuc - South West 2 24 mi · Saint-Malo and Rance - North East 24 mi
See how Baie de Saint-Brieuc - North West 4 stacks up: best european flounder lakes in France · best garfish lakes in France · best european seabass lakes in France · best common sole lakes in France
Browse all France fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.