Salt water depth chart
Today's read
Recent public catches load as you reach this section.
85,825-acre Alabaster Coast. North 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 chalk-cliff coast from Le Tréport through Dieppe toward Fécamp, with exposed shingle, rock and harbor approaches. This page covers the north west 3 angler-scale survey window. The water tops out around 107 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.
On the chart, Alabaster Coast - North West 3 draws 85,771 acres inside 46.3 miles of shoreline. A shoreline index of 1.1 says round and simple: fish relate to depth changes here, not shoreline features. About 0% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. End to end it runs roughly 16.4 mi, about 16.3 mi across. The nearest mapped water is Alabaster Coast - South West 3, 7 mi to the south.
Alabaster Coast — North West 3, France : carte SHOM officielle jusqu’à 33 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.
In spring, european seabass run shallow here, mostly 3 to 25 ft. Midsummer fish sit out in 2 to 30 ft before dropping to 10 to 55 ft for winter. Fall european seabass concentrate at SHOM-grid current seam, a good-rated current seam around 43 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a surface lure or a paddle-tail soft plastic most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | SHOM-grid flat (9 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | SHOM-grid flat (9 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid current seam (43 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | SHOM-grid channel edge (54 ft) | Slow soft-plastic shad, Suspending minnow |
Early season atlantic mackerel use the shallows, holding in 5 to 45 ft. Summer is a 15 to 80 ft game here, winter a 27 to 107 ft one. The chart's best answer is SHOM-grid current seam — current seam, 43 ft, prime for fall. Best bite is early morning and the evening. Tie on a feather rig or a small vertical jig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | SHOM-grid current seam (43 ft) | Mackerel feather rig, Small silver jig |
| Summer | 15 to 80 ft | dawn & dusk | Sharp break (71 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | SHOM-grid current seam (43 ft) | Compact silver jig, Sparse feather rig |
| Winter | 27 to 107 ft | midday | Deepest basin (106 ft) | Small deep jig |
Spring puts european plaice in skinny water — 8 to 35 ft is the zone. As the season builds they drop to 6 to 40 ft, wintering in 25 to 80 ft. Spring european plaice concentrate at SHOM-grid flat, a prime-rated feeding flat around 9 ft. Warm-month bites cluster around early morning and the evening. A light spooned bottom rig or a beaded trace covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | SHOM-grid flat (9 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | SHOM-grid flat (9 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | SHOM-grid channel edge (54 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | SHOM-grid channel edge (54 ft) |
When the water first warms, common sole slide up into 6 to 30 ft. There's no big seasonal slide here — summer means 3 to 30 ft, winter 20 to 70 ft. If you only fish one area, make it SHOM-grid flat: a feeding flat around 9 ft that scores prime in spring. In summer the feeding windows fall in the evening. Keep a light rolling-lead rig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 30 ft | dusk | SHOM-grid flat (9 ft) | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | SHOM-grid flat (9 ft) | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | SHOM-grid flat (9 ft) | Compact bottom jig |
| Winter | 20 to 70 ft | night | SHOM-grid channel edge (54 ft) |
Early season european flounder use the shallows, holding in 5 to 25 ft. Summer is a 6 to 35 ft game here, winter a 15 to 50 ft one. The chart's best answer is SHOM-grid flat — feeding flat, 9 ft, prime for spring. Best bite is early morning and the evening. Tie on a bottom jig with spinner blade and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | SHOM-grid flat (9 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | SHOM-grid flat (9 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | SHOM-grid flat (9 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | SHOM-grid current seam (43 ft) | Small bottom jig |
Spring puts whiting in skinny water — 15 to 55 ft is the zone. As the season builds they drop to 20 to 70 ft, wintering in 15 to 70 ft. Spring whiting concentrate at SHOM-grid channel edge, a prime-rated channel edge around 54 ft. Warm-month bites cluster around early morning. A small vertical jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | SHOM-grid channel edge (54 ft) | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | SHOM-grid channel edge (54 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | SHOM-grid channel edge (54 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | SHOM-grid channel edge (54 ft) | Compact vertical jig |
Alabaster Coast - North 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 (9 to 107 ft in summer), atlantic cod (27 to 107 ft in summer). Pick any of them on the map above for rated spots and bait picks.
7 pieces of structure are mapped here — Deepest basin, around 106 ft, is the deepest of them.
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 Alabaster Coast - North 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 →
Alabaster Coast - North West 3 is about 107 ft (33 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 Alabaster Coast - North 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 43 ft of water that rates prime for atlantic mackerel in fall. 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 Alabaster Coast - North 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.
Alabaster Coast - South West 3 7 mi · Alabaster Coast - North West 4 11 mi · Alabaster Coast - North West 2 11 mi · Alabaster Coast - South West 2 15 mi · Alabaster Coast - North West 5 21 mi · Alabaster Coast - North West 1 22 mi · Alabaster Coast - South West 1 25 mi · Baie de Somme - South West 29 mi · Baie de Somme - North West 32 mi · Southern Opal Coast - South West 36 mi · Baie de Seine - North East 39 mi · Southern Opal Coast - South East 42 mi
See how Alabaster Coast - North 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.