Salt water depth chart
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10,506-acre Boulogne Bay. North East 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. Boulogne-sur-Mer harbor approaches and the surrounding Channel bay, where tidal current crosses sand, rock and breakwater edges. This page covers the north east angler-scale survey window. The water tops out around 68 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. Species by species, here's what the data says the year looks like.
Traced from the shoreline, Boulogne Bay - North East runs 10,508 acres with 24.9 miles of edge. The shoreline is moderately structured (index 1.7) — enough points and pockets to pattern. About 21% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The basin spans about 8.5 mi end to end and 2.8 mi across at its widest. Closest neighbour on DepthScout: Boulogne Bay - North West, 6 mi west of here.
Boulogne Bay — North East, France : carte SHOM officielle jusqu’à 21 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.
The spring pattern is a shallow one: european seabass in 3 to 25 ft. Midsummer fish sit out in 2 to 30 ft before dropping to 10 to 55 ft for winter. The spot to know is SHOM-grid current seam, a current seam in about 26 ft of water that rates prime for european seabass in summer. Plan around early morning and the evening in the warm months. Summer baits: a surface lure or a paddle-tail soft plastic gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | SHOM-grid current seam (26 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | SHOM-grid current seam (26 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | SHOM-grid current seam (26 ft) | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | SHOM-grid channel edge (33 ft) | Slow soft-plastic shad, Suspending minnow |
When the water first warms, atlantic mackerel slide up into 5 to 45 ft. Summer is a 13 to 68 ft game here, winter a 17 to 68 ft one. Start at SHOM-grid basin. It's a deep basin holding about 59 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a feather rig or a small vertical jig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 45 ft | dawn & dusk | SHOM-grid current seam (26 ft) | Mackerel feather rig, Small silver jig |
| Summer | 13 to 68 ft | dawn & dusk | SHOM-grid basin (59 ft) | Feather rig, Small vertical jig |
| Fall | 10 to 65 ft | dawn & dusk | SHOM-grid current seam (26 ft) | Compact silver jig, Sparse feather rig |
| Winter | 17 to 68 ft | midday | SHOM-grid basin (59 ft) | Small deep jig |
The spring pattern is a shallow one: european plaice in 8 to 35 ft. As the season builds they drop to 6 to 40 ft, wintering in 20 to 68 ft. Top water on the chart: SHOM-grid flat, a feeding flat in the 7 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a light spooned bottom rig or a beaded trace gets it done.
| 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 (33 ft) | Beaded bottom trace |
| Winter | 20 to 68 ft | midday | SHOM-grid basin (59 ft) |
Spring common sole on Boulogne Bay - North East hold shallow, usually 6 to 30 ft. Depth-wise the year is flat: 3 to 30 ft in summer, 19 to 68 ft once it turns cold. The chart's best answer is SHOM-grid flat — feeding flat, 7 ft, prime for spring. Prime time lands in the evening. The summer box starts with a light rolling-lead rig.
| 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 (33 ft) | Compact bottom jig |
| Winter | 19 to 68 ft | night | SHOM-grid basin (59 ft) |
When the water first warms, european flounder slide up into 5 to 25 ft. Summer is a 6 to 35 ft game here, winter a 15 to 50 ft one. Start at SHOM-grid flat. It's a feeding flat holding about 7 ft of water and rates prime come spring. The feeding windows run early morning and the evening. Keep a bottom jig with spinner blade rigged through the warm months.
| 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 (24 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Sharp break (24 ft) | Small bottom jig |
The spring pattern is a shallow one: whiting in 15 to 55 ft. As the season builds they drop to 19 to 68 ft, wintering in 15 to 68 ft. Top water on the chart: SHOM-grid channel edge, a channel edge in the 33 ft range, prime in spring. Time it for early morning. Summer baits: a small vertical jig gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 55 ft | dawn & dusk | SHOM-grid channel edge (33 ft) | Small silver jig, Two-hook feather rig |
| Summer | 19 to 68 ft | dawn | SHOM-grid basin (59 ft) | Small vertical jig |
| Fall | 10 to 60 ft | dusk | SHOM-grid channel edge (33 ft) | Small silver jig, Sparse feather rig |
| Winter | 15 to 68 ft | dusk | SHOM-grid basin (59 ft) | Compact vertical jig |
Boulogne Bay - North East 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 (5 to 68 ft in summer), atlantic cod (17 to 68 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Boulogne Bay - North East carries 8 mapped structure features, topping out (or rather bottoming out) at SHOM-grid basin, about 59 ft down.
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 Boulogne Bay - North East 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 →
Boulogne Bay - North East is about 68 ft (21 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 Boulogne Bay - North East. 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 26 ft of water that rates prime for european seabass in summer. 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 Boulogne Bay - North East 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.
Boulogne Bay - North West 6 mi · Calais and Cap Gris-Nez - South West 10 mi · Boulogne Bay - South East 10 mi · Boulogne Bay - South West 12 mi · Calais and Cap Gris-Nez - South East 15 mi · Calais and Cap Gris-Nez - North West 19 mi · Southern Opal Coast - North East 20 mi · Southern Opal Coast - North West 22 mi · Calais and Cap Gris-Nez - North East 22 mi · Dungeness Gravel Pit 30 mi, UK · Greatstone Lake 30 mi, UK · Southern Opal Coast - South East 30 mi
See how Boulogne Bay - North East 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.