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Marsdiep Outer Tidal Basin maps outer Marsdiep-side channels and tidal flats at an angler-useful scale, using the clipped official Rijkswaterstaat waterbody and gridded bathymetry rather than a modeled basin. The water tops out around 40 ft. The depth chart comes from Rijkswaterstaat 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.
Drawn out, this is 20,105 acres of water rimmed by 29.4 miles of bank. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. The shallow band under 15 ft claims about 61% of the surface — that's where the groceries are. Call it 9.3 mi long by 7.2 mi wide at the broadest reach. For a second option, Texel Coast lies 6 mi west.
Vis- en dieptekaart van Marsdiep Outer Tidal Basin, Nederland: gemeten dieptelijnen (Rijkswaterstaat) tot 12 m, met visstekken voor haring, bot. De dieptelijnen zijn berekend uit gemeten bodemhoogten van Rijkswaterstaat en het officiële lokale streefpeil (NAP). Gebruik de kaart als visgids, nooit voor navigatie.
The roster combines Wadden Sea station records and long-running regional monitoring, filtered to this saltwater habitat. It does not imply equal abundance across a tidal basin. 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 |
|---|---|---|
| Haring (Atlantic Herring) | coastal monitoring | — |
| Bot (European Flounder) | coastal monitoring | — |
| Schol (European Plaice) | coastal monitoring | — |
| Tong (Common Sole) | coastal monitoring | — |
| Wijting (Whiting) | coastal monitoring | — |
| Zeebaars (European Seabass) | coastal monitoring | — |
| Spiering (European Smelt) | coastal monitoring | — |
| Paling (European Eel) | coastal monitoring | — |
Official species-evidence source.
Spring puts atlantic herring in skinny water — 5 to 25 ft is the zone. As the season builds they drop to 12 to 40 ft, wintering in 12 to 40 ft. Summer atlantic herring concentrate at RWS bathymetry-derived fishing zone, a good-rated drop-off around 40 ft. Warm-month bites cluster around early morning and the evening. A herring feather rig or a small silver jig covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | open water | Small herring feather rig, Micro jig rig |
| Summer | 12 to 40 ft | dawn & dusk | RWS bathymetry-derived fishing zone (40 ft) | Herring feather rig, Small silver jig |
| Fall | 10 to 40 ft | dawn & dusk | RWS bathymetry-derived fishing zone (40 ft) | Small feather rig, Compact silver spoon |
| Winter | 12 to 40 ft | midday | RWS bathymetry-derived fishing zone (40 ft) | Small silver jig, Sparse feather rig |
Spring european flounder on Marsdiep Outer Tidal Basin hold shallow, usually 5 to 25 ft. By summer they slide out to 6 to 35 ft, and by winter most fish are in 12 to 40 ft. The chart's best answer is RWS bathymetry-derived fishing zone — drop-off, 40 ft, prime for fall. Prime time lands in early morning and the evening. The summer box starts with a bottom jig with spinner blade.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | RWS bathymetry-derived fishing zone (25 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | RWS bathymetry-derived fishing zone (30 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | RWS bathymetry-derived fishing zone (40 ft) | Compact bottom jig |
| Winter | 12 to 40 ft | midday | RWS bathymetry-derived fishing zone (40 ft) | Small bottom jig |
In spring, european plaice run shallow here, mostly 8 to 35 ft. Midsummer fish sit out in 6 to 40 ft before dropping to 12 to 40 ft for winter. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a light spooned bottom rig or a beaded trace most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 35 ft | dusk | open water | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | open water | Light spooned bottom rig, Beaded trace |
| Fall | 8 to 40 ft | dusk | open water | Beaded bottom trace |
| Winter | 12 to 40 ft | midday | open water |
Come spring, look for common sole tight to the bank in 6 to 30 ft. Through summer count on 3 to 30 ft; the winter hold is 11 to 40 ft. Best bite is the evening. A light rolling-lead rig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 6 to 30 ft | dusk | open water | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | open water | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | open water | Compact bottom jig |
| Winter | 11 to 40 ft | night | open water |
In spring, whiting run shallow here, mostly 11 to 40 ft. Summer keeps them at 11 to 40 ft, and they winter in 9 to 40 ft. Fish it in early morning and you'll meet the bite. You won't need more than a small vertical jig most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 11 to 40 ft | dawn & dusk | open water | Small silver jig, Two-hook feather rig |
| Summer | 11 to 40 ft | dawn | open water | Small vertical jig |
| Fall | 7 to 40 ft | dusk | open water | Small silver jig, Sparse feather rig |
| Winter | 9 to 40 ft | dusk | open water | Compact vertical jig |
Spring puts european seabass in skinny water — 3 to 25 ft is the zone. As the season builds they drop to 2 to 30 ft, wintering in 7 to 40 ft. Warm-month bites cluster around early morning and the evening. A surface lure or a paddle-tail soft plastic covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | open water | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | open water | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | open water | Slim metal lure, Minnow plug |
| Winter | 7 to 40 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
Marsdiep Outer Tidal Basin also holds european smelt (12 to 40 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.
4 pieces of structure are mapped here — RWS bathymetry-derived fishing zone, around 40 ft, is the deepest of them.
Access data: Rijkswaterstaat Fairway Information Services. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Netherlands waters are set by the Netherlands Enterprise Agency (RVO — recreational saltwater fishing) — and special regulations can apply to Marsdiep Outer Tidal Basin specifically, so confirm the current rules before you fish.
Check the official Netherlands fishing regulations →
Marsdiep Outer Tidal Basin is about 40 ft (12 m) deep at its deepest point. The depth chart comes from Rijkswaterstaat bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Official coastal monitoring from Wageningen Marine Research — Dutch Wadden Sea monitoring informs the atlantic herring, european flounder, european plaice, common sole, whiting, european seabass, european smelt, european eel roster for Marsdiep Outer Tidal Basin. 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.
RWS bathymetry-derived fishing zone is the top-rated area: a drop-off in about 40 ft of water that rates prime for european flounder in fall. The interactive chart above rates every spot for each species and season.
For atlantic herring, 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 Marsdiep Outer Tidal Basin is regulated by the Netherlands Enterprise Agency (RVO — recreational saltwater fishing). Check the official Netherlands regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Texel Coast 6 mi · Vlie Outer Tidal Basin 9 mi · Vlieland Coast 9 mi · Marsdiep Offshore 11 mi · Vlie Inner Tidal Basin 12 mi · Marsdiep Inner Tidal Basin 13 mi · Borndiep–Pinkegat West Inner 16 mi · Den Helder–Harlingen Wadden Coast 18 mi · Vlie Offshore 18 mi · North Holland Coast 20 mi · Borndiep–Pinkegat West Outer 23 mi · Harlingen–Lauwersoog Wadden Coast 26 mi
See how Marsdiep Outer Tidal Basin stacks up: best atlantic herring lakes in Netherlands · best european flounder lakes in Netherlands · best european seabass lakes in Netherlands · best common sole lakes in Netherlands
Browse all Netherlands fishing maps. See every water on DepthScout. Bathymetry credit: Rijkswaterstaat measured bed elevations and official target water levels, CC0. 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.