Salt water depth chart
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99,105-acre Golfe Normand-Breton. North West 1 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 Normandy-Brittany Gulf and Mont-Saint-Michel approaches, where broad banks and channels require trip-scale sections. This page covers the north west 1 angler-scale survey window. The water tops out around 142 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. Here is how the season plays out for each species, straight from the data behind the map.
On the chart, Golfe Normand-Breton - North West 1 draws 98,925 acres inside 50.6 miles of shoreline. A shoreline index of 1.1 says round and simple: fish relate to depth changes here, not shoreline features. The shallow band under 15 ft claims about 0% of the surface — that's where the groceries are. Call it 18 mi long by 15.5 mi wide at the broadest reach. For a second option, Baie de Saint-Brieuc - North West 4 lies 6 mi northwest.
Golfe Normand-Breton — North West 1, France : carte SHOM officielle jusqu’à 43 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.
Start shallow in spring: european seabass sit in 3 to 25 ft that time of year. Warm water sends them out to 2 to 30 ft; cold water stacks them in 10 to 55 ft. Top water on the chart: SHOM-grid point, a point in the 41 ft range, good in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a surface lure or a paddle-tail soft plastic until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | open water | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | open water | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid point (41 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
Early season common sole use the shallows, holding in 6 to 30 ft. Even in summer they hold at 3 to 30 ft; winter keeps them in 20 to 70 ft. Put Feeding flat first on the milk run — a feeding flat near 40 ft that grades good for fall. In summer the feeding windows fall in the evening. Tie on a light rolling-lead rig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 30 ft | dusk | Feeding flat (40 ft) | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | Feeding flat (40 ft) | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | Feeding flat (40 ft) | Compact bottom jig |
| Winter | 20 to 70 ft | night | SHOM-grid channel edge (69 ft) |
Come spring, look for european flounder tight to the bank in 5 to 25 ft. They move out to 6 to 35 ft in summer and finish the year down in 15 to 50 ft. If you only fish one area, make it Sharp break: a drop-off around 41 ft that scores good in fall. Best bite is early morning and the evening. A bottom jig with spinner blade is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | SHOM-grid shoal (25 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | Feeding flat (40 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | Sharp break (41 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Sharp break (41 ft) | Small bottom jig |
Start shallow in spring: european plaice sit in 8 to 35 ft that time of year. Summer pushes them deeper, 6 to 40 ft, and winter fish settle into 25 to 80 ft. The spot to know is Feeding flat, a feeding flat in about 40 ft of water that rates prime for european plaice in summer. Warm-month bites cluster around early morning and the evening. Throw a light spooned bottom rig or a beaded trace until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | SHOM-grid shoal (25 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | Feeding flat (40 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | Feeding flat (40 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | SHOM-grid channel edge (69 ft) |
Start shallow in spring: whiting sit in 15 to 55 ft that time of year. Summer pushes them deeper, 20 to 70 ft, and winter fish settle into 15 to 70 ft. The spot to know is SHOM-grid channel edge, a channel edge in about 69 ft of water that rates good for whiting in winter. Warm-month bites cluster around early morning. Throw a small vertical jig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | SHOM-grid current seam (55 ft) | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | SHOM-grid channel edge (69 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | SHOM-grid current seam (55 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | SHOM-grid channel edge (69 ft) | Compact vertical jig |
Spring puts garfish in skinny water — 1 to 15 ft is the zone. Warm water sends them out to 2 to 20 ft; cold water stacks them in 20 to 60 ft. SHOM-grid current seam is the standout, a current seam at roughly 55 ft, rated good for winter garfish. Plan around early morning and the evening in the warm months. A slim casting spoon or a surface-skipping fly covers the summer program.
| 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 | SHOM-grid shoal (25 ft) | 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 (55 ft) |
Golfe Normand-Breton - North West 1 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.
The chart marks 7 structure features on Golfe Normand-Breton - North West 1; the deepest is Deepest basin at about 137 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 Golfe Normand-Breton - North West 1 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 →
Golfe Normand-Breton - North West 1 is about 142 ft (43 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 Golfe Normand-Breton - North West 1. 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 40 ft of water that rates prime for european plaice in summer. 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 Golfe Normand-Breton - North West 1 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.
Baie de Saint-Brieuc - North West 4 6 mi · Golfe Normand-Breton - North West 2 9 mi · Golfe Normand-Breton - South West 1 10 mi · Saint-Malo and Rance - North West 10 mi · Baie de Saint-Brieuc - South West 4 10 mi · Baie de Saint-Brieuc - North West 3 12 mi · West Cotentin Coast - South 1 West 13 mi · Baie de Saint-Brieuc - South West 3 16 mi · Saint-Malo and Rance - North East 18 mi · West Cotentin Coast - South 2 West 21 mi · Golfe Normand-Breton - North West 3 21 mi · Baie de Saint-Brieuc - North West 2 22 mi
See how Golfe Normand-Breton - North West 1 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.