Salt water depth chart
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74,342-acre West Cotentin Coast. South 1 West 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 west Cotentin shore from Carteret to Granville, with islands, rock, sand banks and macrotidal channels. This page covers the south 1 west angler-scale survey window. The water tops out around 101 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. Every species below gets its seasonal read from the same numbers driving the chart.
The drawn water covers 74,268 acres wrapped in 45.7 miles of bank. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. About 1% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 16 mi with a 15.2-mi widest point. Its nearest charted neighbour, Golfe Normand-Breton - North West 2, is 7 mi to the southwest.
West Cotentin Coast — South 1 West, France : carte SHOM officielle jusqu’à 31 m; spots pour bar commun, maquereau commun. 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 | — |
| maquereau commun (Atlantic Mackerel) | official species listing | — |
| lieu jaune (Atlantic Pollock) | official species listing | — |
| lieu noir (Saithe (Coalfish)) | official species listing | — |
| cabillaud (Atlantic Cod) | official species listing | — |
| lingue (Ling) | official species listing | — |
| orphie (Garfish) | official species listing | — |
| barbue (Brill) | official species listing | — |
| raie bouclée (Thornback Ray) | official species listing | — |
| sole commune (Common Sole) | official species listing | — |
| mulet lippu (Thick-lipped Grey Mullet) | official species listing | — |
| mulet cabot (Flathead Grey Mullet) | official species listing | — |
| anguille européenne (European Eel) | official species listing | — |
Official species-evidence source.
Come spring, look for european seabass tight to the bank in 3 to 25 ft. They move out to 2 to 30 ft in summer and finish the year down in 10 to 55 ft. If you only fish one area, make it SHOM-grid current seam: a current seam around 40 ft that scores prime in fall. Best bite is early morning and the evening. A surface lure or a paddle-tail soft plastic is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Shoreline point (29 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | Shoreline point (29 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid current seam (40 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | SHOM-grid channel edge (50 ft) | Slow soft-plastic shad, Suspending minnow |
Start shallow in spring: atlantic mackerel sit in 5 to 45 ft that time of year. Warm water sends them out to 15 to 80 ft; cold water stacks them in 25 to 101 ft. Top water on the chart: SHOM-grid current seam, a current seam in the 40 ft range, prime in fall. Fish it in early morning and the evening and you'll meet the bite. Throw a feather rig or a small vertical jig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | SHOM-grid current seam (40 ft) | Mackerel feather rig, Small silver jig |
| Summer | 15 to 80 ft | dawn & dusk | Sharp break (55 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | SHOM-grid current seam (40 ft) | Compact silver jig, Sparse feather rig |
| Winter | 25 to 101 ft | midday | Deepest basin (100 ft) | Small deep jig |
The spring pattern is a shallow one: atlantic pollock in 8 to 100 ft. As the season builds they drop to 8 to 101 ft, wintering in 16 to 101 ft. Top water on the chart: Shoreline point, a point in the 29 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a surface plug or a baitfish swimbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 100 ft | dawn & dusk | Shoreline point (29 ft) | Sandeel-pattern lure, Soft-plastic shad |
| Summer | 8 to 101 ft | dawn & dusk | Shoreline point (29 ft) | Surface plug, Baitfish swimbait |
| Fall | 9 to 101 ft | dawn | Shoreline point (29 ft) | Metal jig, Minnow plug |
| Winter | 16 to 101 ft | midday | Sharp break (55 ft) | Slow metal jig, Weighted soft plastic |
Come spring, look for saithe (coalfish) tight to the bank in 9 to 101 ft. Through summer count on 10 to 101 ft; the winter hold is 14 to 101 ft. If you only fish one area, make it SHOM-grid current seam: a current seam around 40 ft that scores prime in spring. Best bite is early morning and the evening. A speed jig or a heavy paddletail is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 9 to 101 ft | dawn & dusk | SHOM-grid current seam (40 ft) | Slim metal jig, Paddletail |
| Summer | 10 to 101 ft | dawn & dusk | Sharp break (55 ft) | Speed jig, Heavy paddletail |
| Fall | 9 to 101 ft | dawn & dusk | SHOM-grid current seam (40 ft) | Metal jig, Baitfish swimbait |
| Winter | 14 to 101 ft | midday | Deepest basin (100 ft) | Heavy vertical jig |
The spring pattern is a shallow one: atlantic cod in 20 to 100 ft. As the season builds they drop to 25 to 101 ft, wintering in 23 to 101 ft. Top water on the chart: Deepest basin, a deep basin in the 100 ft range, prime in winter. Time it for early morning. Summer baits: a heavy metal jig or a large soft-plastic jig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 20 to 100 ft | dawn | Sharp break (55 ft) | Diamond jig, Heavy bucktail |
| Summer | 25 to 101 ft | dawn | Deepest basin (100 ft) | Heavy metal jig, Large soft-plastic jig |
| Fall | 18 to 101 ft | dawn | Sharp break (55 ft) | Diamond jig, Bucktail with teaser |
| Winter | 23 to 101 ft | midday | Deepest basin (100 ft) | Heavy vertical jig |
Come spring, look for ling tight to the bank in 18 to 101 ft. Through summer count on 17 to 101 ft; the winter hold is 19 to 101 ft. If you only fish one area, make it Sharp break: a drop-off around 55 ft that scores prime in spring. Best bite is midday. A heavy vertical jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 18 to 101 ft | midday | Sharp break (55 ft) | Heavy metal jig, Large soft-plastic jig |
| Summer | 17 to 101 ft | midday | Sharp break (55 ft) | Heavy vertical jig |
| Fall | 17 to 101 ft | midday | Sharp break (55 ft) | Long metal jig |
| Winter | 19 to 101 ft | midday | Deepest basin (100 ft) | Heavy deep jig |
West Cotentin Coast - South 1 West also holds garfish (2 to 20 ft in summer), brill (6 to 50 ft in summer), thornback ray (10 to 65 ft in summer), common sole (3 to 30 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer), flathead grey mullet (1 to 22 ft in summer), european eel (6 to 28 ft in summer). Pick any of them on the map above for rated spots and bait picks.
West Cotentin Coast - South 1 West carries 8 mapped structure features, topping out (or rather bottoming out) at Deepest basin, about 100 ft down.
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 West Cotentin Coast - South 1 West 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 →
West Cotentin Coast - South 1 West is about 101 ft (31 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, atlantic mackerel, atlantic pollock, saithe (coalfish), atlantic cod, ling, garfish, brill, thornback ray, common sole, thick-lipped grey mullet, flathead grey mullet, european eel roster for West Cotentin Coast - South 1 West. 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.
SHOM-grid current seam is the top-rated area: a current seam in about 40 ft of water that rates prime for european seabass in fall. Every other rated spot, per species and season, is on the map above.
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 West Cotentin Coast - South 1 West 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 2 7 mi · West Cotentin Coast - South 1 Central 9 mi · Saint-Malo and Rance - North East 11 mi · Golfe Normand-Breton - North West 3 12 mi · Saint-Malo and Rance - North West 12 mi · Golfe Normand-Breton - North West 1 13 mi · West Cotentin Coast - South 2 West 14 mi · West Cotentin Coast - South 1 East 15 mi · Golfe Normand-Breton - South West 3 16 mi · West Cotentin Coast - South 2 Central 16 mi · Baie de Saint-Brieuc - North West 4 17 mi · Golfe Normand-Breton - North West 4 17 mi
See how West Cotentin Coast - South 1 West stacks up: best garfish lakes in France · best european seabass lakes in France · best common sole lakes in France · best thick-lipped grey mullet 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.