Salt water depth chart
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19,860-acre East Cotentin Coast. South West 3 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 eastern Cotentin coast from Utah Beach to Barfleur, including roadstead, harbor and tide-race structure. This page covers the south west 3 angler-scale survey window. The water tops out around 72 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 rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 19,867 acres, worked by 29.2 miles of shoreline. A middling shoreline index (1.5) gives it some bays to work without being a maze. The shallow band under 15 ft claims about 11% of the surface — that's where the groceries are. The basin spans about 10.7 mi end to end and 5.3 mi across at its widest. East Cotentin Coast - Middle West 3 sits 8 mi north — the closest neighbouring chart.
East Cotentin Coast — South West 3, France : carte SHOM officielle jusqu’à 22 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 | — |
| plie commune (European Plaice) | official species listing | — |
| sole commune (Common Sole) | official species listing | — |
| flet commun (European Flounder) | official species listing | — |
| merlan (Whiting) | official species listing | — |
| orphie (Garfish) | official species listing | — |
| hareng (Atlantic Herring) | official species listing | — |
| barbue (Brill) | official species listing | — |
| raie bouclée (Thornback Ray) | official species listing | — |
| mulet lippu (Thick-lipped Grey Mullet) | official species listing | — |
| lieu jaune (Atlantic Pollock) | official species listing | — |
| cabillaud (Atlantic Cod) | official species listing | — |
Official species-evidence source.
When the water first warms, european seabass slide up into 3 to 25 ft. Summer is a 2 to 30 ft game here, winter a 10 to 55 ft one. Start at SHOM-grid current seam. It's a current seam holding about 29 ft of water and rates prime come summer. The feeding windows run 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 | SHOM-grid current seam (29 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | SHOM-grid current seam (29 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid current seam (29 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | SHOM-grid channel edge (36 ft) | Slow soft-plastic shad, Suspending minnow |
The spring pattern is a shallow one: atlantic mackerel in 5 to 45 ft. Midsummer fish sit out in 14 to 72 ft before dropping to 18 to 72 ft for winter. The spot to know is Deepest basin, a deep basin in about 71 ft of water that rates prime for atlantic mackerel in summer. Plan around early morning and the evening in the warm months. 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 | SHOM-grid current seam (29 ft) | Mackerel feather rig, Small silver jig |
| Summer | 14 to 72 ft | dawn & dusk | Deepest basin (71 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | SHOM-grid current seam (29 ft) | Compact silver jig, Sparse feather rig |
| Winter | 18 to 72 ft | midday | Deepest basin (71 ft) | Small deep jig |
Early season european plaice use the shallows, holding in 8 to 35 ft. Summer is a 6 to 40 ft game here, winter a 22 to 72 ft one. The chart's best answer is SHOM-grid flat — feeding flat, 7 ft, prime for summer. Best bite is 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 | SHOM-grid flat (7 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | SHOM-grid flat (7 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | SHOM-grid channel edge (36 ft) | Beaded bottom trace |
| Winter | 22 to 72 ft | midday | Deepest basin (71 ft) |
In spring, common sole run shallow here, mostly 6 to 30 ft. Summer keeps them at 3 to 30 ft, and they winter in 20 to 70 ft. SHOM-grid flat is the standout, a feeding flat at roughly 7 ft, rated prime for spring common sole. Time it for the evening. You won't need more than a light rolling-lead rig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 30 ft | dusk | SHOM-grid flat (7 ft) | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | SHOM-grid flat (7 ft) | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | SHOM-grid channel edge (36 ft) | Compact bottom jig |
| Winter | 20 to 70 ft | night | Deepest basin (71 ft) |
The spring pattern is a shallow one: european flounder in 5 to 25 ft. Midsummer fish sit out in 6 to 35 ft before dropping to 15 to 50 ft for winter. The spot to know is SHOM-grid flat, a feeding flat in about 7 ft of water that rates prime for european flounder in spring. Plan around early morning and the evening in the warm months. 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 | SHOM-grid flat (7 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | SHOM-grid flat (7 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | Sharp break (31 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Sharp break (31 ft) | Small bottom jig |
Early season whiting use the shallows, holding in 15 to 55 ft. Summer is a 20 to 70 ft game here, winter a 15 to 70 ft one. The chart's best answer is SHOM-grid channel edge — channel edge, 36 ft, prime for spring. Best bite is 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 | SHOM-grid channel edge (36 ft) | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | Deepest basin (71 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | SHOM-grid channel edge (36 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | Deepest basin (71 ft) | Compact vertical jig |
East Cotentin Coast - South West 3 also holds garfish (2 to 20 ft in summer), atlantic herring (15 to 50 ft in summer), brill (6 to 50 ft in summer), thornback ray (10 to 65 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer), atlantic pollock (6 to 72 ft in summer), atlantic cod (18 to 72 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 8 structure features on East Cotentin Coast - South West 3; the deepest is Deepest basin at about 71 ft.
Access data: European Environment Agency — 2025 Bathing Water Directive Sites (France). Confirm conditions and fees locally before you launch.
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 East Cotentin Coast - South West 3 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 →
East Cotentin Coast - South West 3 is about 72 ft (22 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, european plaice, common sole, european flounder, whiting, garfish, atlantic herring, brill, thornback ray, thick-lipped grey mullet, atlantic pollock, atlantic cod roster for East Cotentin Coast - South West 3. 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 29 ft of water that rates prime for european seabass in summer. Open the map above to see every rated 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 East Cotentin Coast - South West 3 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.
East Cotentin Coast - Middle West 3 8 mi · East Cotentin Coast - South West 4 9 mi · East Cotentin Coast - South West 2 9 mi · East Cotentin Coast - Middle West 4 12 mi · East Cotentin Coast - Middle West 2 13 mi · East Cotentin Coast - Middle West 1 19 mi · Baie de Seine - South West 19 mi · East Cotentin Coast - North West 3 20 mi · Baie de Seine - Middle West 20 mi · East Cotentin Coast - North West 4 22 mi · East Cotentin Coast - North West 2 23 mi · Baie de Seine - North West 27 mi
See how East Cotentin Coast - South West 3 stacks up: best atlantic herring lakes in France · best european flounder lakes in France · best garfish lakes in France · best european seabass 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.