Salt water depth chart
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18,717-acre Marstrands kustvatten Sweden coastal fishing map with an exact official national water-body boundary, EMODnet 2024 CDI-audited mixed survey/composite DTM contours, source-assessed fishing spots, official regional fish evidence, seasonal forage guidance, public-access review and current-rule links. Official SMHI SVAR 2022 named coastal water in West Coast and Kattegat. This child is clipped to the exact source polygon and a trip-scale ownership window. Coverage classes and uncertainty limits are disclosed; this is a fishing-planning chart, not a navigation chart or catch forecast. The water tops out around 70 m. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled. Below is the species-by-species picture, pulled from the same data the map uses.
Marstrands kustvatten mäter 7 573 hektar bakom 71.6 km strandlinje, uppbruten av 130 öar. Ett strandindex på 2.3 betyder en labyrint av vikar och uddar: många fler kastmål än en rund sjö i samma storlek. Ungefär 2% av ytan är grundare än ~5 m — där finns vegetationen och betesfisken. Räkna med 12.9 km vatten från ena änden till den andra och 10.5 km på bredden. Göteborgs skärgårds N kustvatten - North ligger 9.7 km åt söder — närmaste grannvatten på kartan.
Gratis interaktiv fiskekarta — Marstrands kustvatten, Sverige: djupkurvor från riktiga djupmätningar ner till 70 m (230 fot), och de bästa fiskeplatserna för havsöring, sill och strömming, makrill med flera. Djupkartan är modellberäknad från sjöns verkliga strandlinje och största djup — använd den som vägledning, aldrig för navigation.
Occurrence evidence does not promise a catch or establish that retention is legal. Current seasons, closures, protected species, gear rules and local restrictions 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 |
|---|---|---|
| (Sea Trout) | official species listing | — |
| (Atlantic Herring) | official species listing | — |
| (Atlantic Mackerel) | official species listing | — |
| (Garfish) | official species listing | — |
| (European Flounder) | official species listing | — |
| (European Plaice) | official species listing | — |
| (Saithe (Coalfish)) | official species listing | — |
| (Atlantic Cod) | official species listing | — |
Official species-evidence source.
In spring, sea trout run shallow here, mostly 1 to 6 m. Summer pushes them deeper, 4.5 to 15 m, and winter fish settle into 1.5 to 9 m. Sharp break is the standout, a drop-off at roughly 11 m, rated prime for summer sea trout. Time it for early morning and the evening. You won't need more than a deep-running wobbler or a trolled spoon most summer days.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1 to 6 m | dawn & dusk | Rock reef (0.5 m) | Slim coastal spoon, Shallow-running wobbler |
| Sommar | 4.5 to 15 m | dawn & dusk | Sharp break (11 m) | Deep-running wobbler, Trolled spoon |
| Höst | 1 to 7.5 m | dawn & dusk | Rock reef (0.5 m) | Coastal wobbler, Casting spoon |
| Vinter | 1.5 to 9 m | midday | Rock reef (0.5 m) | Slow coastal spoon, Suspending wobbler |
The spring pattern is a shallow one: atlantic herring in 1.5 to 7.5 m. As the season builds they drop to 4.5 to 15 m, wintering in 6 to 18 m. Top water on the chart: Sharp break, a drop-off in the 11 m range, good in summer. Time it for early morning and the evening. Summer baits: a herring feather rig or a small silver jig gets it done.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 7.5 m | dawn & dusk | Rock reef (0.5 m) | Small herring feather rig, Micro jig rig |
| Sommar | 4.5 to 15 m | dawn & dusk | Sharp break (11 m) | Herring feather rig, Small silver jig |
| Höst | 3 to 12 m | dawn & dusk | Sharp break (11 m) | Small feather rig, Compact silver spoon |
| Vinter | 6 to 18 m | midday | Sharp break (11 m) | Small silver jig, Sparse feather rig |
When the water first warms, atlantic mackerel slide up into 1.5 to 14 m. By summer they slide out to 4.5 to 24 m, and by winter most fish are in 9 to 37 m. If you only fish one area, make it Sharp break: a drop-off around 11 m that scores good in summer. In summer the feeding windows fall in early morning and the evening. Keep a feather rig or a small vertical jig rigged through the warm months.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 14 m | dawn & dusk | Sharp break (11 m) | Mackerel feather rig, Small silver jig |
| Sommar | 4.5 to 24 m | dawn & dusk | Sharp break (11 m) | Feather rig, Small vertical jig |
| Höst | 3 to 20 m | dawn & dusk | Sharp break (11 m) | Compact silver jig, Sparse feather rig |
| Vinter | 9 to 37 m | midday | Sharp break (11 m) | Small deep jig |
In spring, garfish run shallow here, mostly 0.5 to 4.5 m. Summer pushes them deeper, 0.5 to 6 m, and winter fish settle into 6 to 18 m. Sharp break is the standout, a drop-off at roughly 11 m, rated good for winter garfish. Time it for early morning and the evening. You won't need more than a slim casting spoon or a surface-skipping fly most summer days.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 0.5 to 4.5 m | dawn & midday | open water | Slim silver spoon, Small inline spinner |
| Sommar | 0.5 to 6 m | dawn & dusk | open water | Slim casting spoon, Surface-skipping fly |
| Höst | 2.5 to 9 m | dawn & dusk | open water | Weighted slim spoon, Small silver jig |
| Vinter | 6 to 18 m | midday | Sharp break (11 m) |
When the water first warms, european flounder slide up into 1.5 to 7.5 m. By summer they slide out to 2 to 11 m, and by winter most fish are in 4.5 to 15 m. If you only fish one area, make it Sharp break: a drop-off around 11 m that scores prime in fall. In summer the feeding windows fall in early morning and the evening. Keep a bottom jig with spinner blade rigged through the warm months.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 1.5 to 7.5 m | dusk | open water | Small bucktail dragged on bottom |
| Sommar | 2 to 11 m | dawn & dusk | Sharp break (11 m) | Bottom jig with spinner blade |
| Höst | 2.5 to 12 m | dusk | Sharp break (11 m) | Compact bottom jig |
| Vinter | 4.5 to 15 m | midday | Sharp break (11 m) | Small bottom jig |
The spring pattern is a shallow one: european plaice in 2.5 to 11 m. Midsummer fish sit out in 2 to 12 m before dropping to 7.5 to 24 m for winter. Plan around early morning and the evening in the warm months. Summer baits: a light spooned bottom rig or a beaded trace gets it done.
| Säsong | Djup | Bästa tid | Börja vid | Beten |
|---|---|---|---|---|
| Vår | 2.5 to 11 m | dusk | open water | Beaded flowing trace |
| Sommar | 2 to 12 m | dawn & dusk | open water | Light spooned bottom rig, Beaded trace |
| Höst | 3 to 15 m | dusk | open water | Beaded bottom trace |
| Vinter | 7.5 to 24 m | midday | open water |
Marstrands kustvatten also holds saithe (coalfish) (6.5 to 70 m in summer), atlantic cod (14 to 55 m in summer). Pick any of them on the map above for rated spots and bait picks.
Count 8 structure marks on this chart. The deepest, Deepest basin, sits near 68 m.
No Swedish Agency for Marine and Water Management active bathing location matched within 400 metres of this exact mapped shoreline. This is an access-evidence gap, not a claim that public access does not exist. Verify land ownership, local signs, parking, safety and fishing 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 Sweden waters are set by the Svenska Fiskeregler (official current Swedish fishing-rules service) — and special regulations can apply to Marstrands kustvatten specifically, so confirm the current rules before you fish. Check Svenska Fiskeregler and the Swedish Agency for Marine and Water Management immediately before every coastal trip. Area-specific closures, protected spawning areas, minimum and maximum sizes, gear restrictions and species prohibitions can change; recreational fishing for Baltic cod is prohibited during 2026. A mapped depth contour, fishing-spot marker or bathing-site access lead never establishes permission to fish, retain catch, cross private land, park, launch or navigate safely.
Check the official Sweden fishing regulations →
Swedish Agency for Marine and Water Management →
Check special-area and water-specific rules →
Check official shore-access information →
Marstrands kustvatten is about 230 ft (70 m) deep at its deepest point. The depth chart comes from EMODnet, with national hydrographic source-reference audit bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Marstrands kustvatten är som djupast cirka 70 meter (230 fot). Djupen kommer från verkliga lodningar.
Official coastal monitoring from Sweden national fisheries and coastal monitoring agencies informs the sea trout, atlantic herring, atlantic mackerel, garfish, european flounder, european plaice, saithe (coalfish), atlantic cod roster for Marstrands kustvatten. 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.
Sharp break is the top-rated area: a drop-off in about 35 ft of water that rates prime for sea trout in summer. The interactive chart above rates every spot for each species and season.
For sea trout, 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 Marstrands kustvatten is regulated by the Svenska Fiskeregler (official current Swedish fishing-rules service). Check the official Sweden regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Göteborgs skärgårds N kustvatten - North 6 mi · Hjärterö fjord kustvatten 8 mi · Bö Tjärn 10 mi · Tolleby Tjärn 10 mi · Göteborgs skärgårds N kustvatten - South 12 mi · Hake fjord 13 mi · Tjärne Vatten 13 mi · Mollö fjord kustvatten 14 mi · Ingetorps Sjö 15 mi · Kråkevatten 18 mi · Tvibotten 19 mi · Stora Holmevatten 19 mi
See how Marstrands kustvatten stacks up: best sea trout lakes in Sweden · best atlantic herring lakes in Sweden · best european flounder lakes in Sweden · best garfish lakes in Sweden
Browse all Sweden fishing maps. See every water on DepthScout. Bathymetry credit: EMODnet, with national hydrographic source-reference audit EMODnet Bathymetry DTM 2024 mean-depth grid — CDI-audited mixed survey/composite DTM (Lowest Astronomical Tide (LAT); 100% measured, 0% source-interpolated). 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.