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Maasmonding Offshore is a 1,596-acre Dutch saltwater fishing section with official Rijkswaterstaat bathymetry, evidence-scoped fish targets, and mapped depth-derived fishing spots. The water tops out around 107 ft. The depth chart comes from Rijkswaterstaat bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
The outline encloses 1,596 acres, worked by 9.4 miles of shoreline. A middling shoreline index (1.7) gives it some bays to work without being a maze. Roughly 68% of the water is 15 ft or less, the band where the food chain lives. End to end it runs roughly 3.9 mi, about 1.5 mi across. If the bite dies, Haringvliet Offshore is 2 mi to the east.
Vis- en dieptekaart van Maasmonding Offshore, Nederland: gemeten dieptelijnen (Rijkswaterstaat) tot 33 m, met visstekken voor haring, bot, geep. De dieptelijnen zijn berekend uit gemeten bodemhoogten van Rijkswaterstaat en het officiële lokale streefpeil (NAP). Gebruik de kaart als visgids, nooit voor navigatie.
The page roster combines Dutch coastal monitoring with habitat filtering for this mapped section. Regional presence is not a promise of a catch on a particular tide. 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 | — |
| Geep (Garfish) | coastal monitoring | — |
| Makreel (Atlantic Mackerel) | coastal monitoring | — |
| Kabeljauw (Atlantic Cod) | coastal monitoring | — |
| Diklipharder (Thick-lipped Grey Mullet) | coastal monitoring | — |
Official species-evidence source.
When the water first warms, atlantic herring slide up into 5 to 25 ft. By summer they slide out to 15 to 50 ft, and by winter most fish are in 20 to 60 ft. If you only fish one area, make it RWS bathymetry-derived fishing zone: a drop-off around 60 ft that scores good in winter. In summer the feeding windows fall in early morning and the evening. Keep a herring feather rig or a small silver jig rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | RWS bathymetry-derived fishing zone (7 ft) | Small herring feather rig, Micro jig rig |
| Summer | 15 to 50 ft | dawn & dusk | open water | Herring feather rig, Small silver jig |
| Fall | 10 to 40 ft | dawn & dusk | open water | Small feather rig, Compact silver spoon |
| Winter | 20 to 60 ft | midday | RWS bathymetry-derived fishing zone (60 ft) | Small silver jig, Sparse feather rig |
The spring pattern is a shallow one: european flounder in 5 to 25 ft. As the season builds they drop to 6 to 35 ft, wintering in 15 to 50 ft. Top water on the chart: RWS bathymetry-derived fishing zone, a feeding flat in the 7 ft range, prime in spring. Time it for early morning and the evening. 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 | RWS bathymetry-derived fishing zone (7 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | RWS bathymetry-derived fishing zone (7 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | RWS bathymetry-derived fishing zone (29 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | RWS bathymetry-derived fishing zone (29 ft) | Small bottom jig |
Early season european plaice use the shallows, holding in 8 to 35 ft. Expect a summer slide to 6 to 40 ft, then a winter hold in 25 to 80 ft. Put RWS bathymetry-derived fishing zone first on the milk run — a feeding flat near 29 ft that grades prime for spring. In summer the feeding windows fall in 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 | RWS bathymetry-derived fishing zone (29 ft) | Beaded flowing trace |
| Summer | 6 to 40 ft | dawn & dusk | RWS bathymetry-derived fishing zone (7 ft) | Light spooned bottom rig, Beaded trace |
| Fall | 10 to 50 ft | dusk | RWS bathymetry-derived fishing zone (29 ft) | Beaded bottom trace |
| Winter | 25 to 80 ft | midday | open water |
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. Spring common sole concentrate at RWS bathymetry-derived fishing zone, a prime-rated feeding flat around 7 ft. Fish it in the evening and you'll meet the bite. 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 | RWS bathymetry-derived fishing zone (7 ft) | Tiny bottom jig |
| Summer | 3 to 30 ft | dusk | RWS bathymetry-derived fishing zone (7 ft) | Light rolling-lead rig |
| Fall | 8 to 40 ft | dusk | RWS bathymetry-derived fishing zone (29 ft) | Compact bottom jig |
| Winter | 20 to 70 ft | night | open water |
Early season whiting use the shallows, holding in 15 to 55 ft. Expect a summer slide to 20 to 70 ft, then a winter hold in 15 to 70 ft. In summer the feeding windows fall in 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 | open water | Small silver jig, Two-hook feather rig |
| Summer | 20 to 70 ft | dawn | open water | Small vertical jig |
| Fall | 10 to 60 ft | dusk | open water | Small silver jig, Sparse feather rig |
| Winter | 15 to 70 ft | dusk | open water | Compact vertical jig |
When the water first warms, european seabass slide up into 3 to 25 ft. By summer they slide out to 2 to 30 ft, and by winter most fish are in 10 to 55 ft. If you only fish one area, make it RWS bathymetry-derived fishing zone: a feeding flat around 7 ft that scores good in summer. In summer the feeding windows fall in 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 | RWS bathymetry-derived fishing zone (7 ft) | Paddle-tail soft plastic, Shallow minnow plug |
| Summer | 2 to 30 ft | dawn & dusk | RWS bathymetry-derived fishing zone (7 ft) | Surface lure, Paddle-tail soft plastic |
| Fall | 4 to 40 ft | dawn & dusk | open water | Slim metal lure, Minnow plug |
| Winter | 10 to 55 ft | midday | open water | Slow soft-plastic shad, Suspending minnow |
Maasmonding Offshore also holds garfish (2 to 20 ft in summer), atlantic mackerel (15 to 80 ft in summer), atlantic cod (27 to 107 ft in summer), thick-lipped grey mullet (1 to 18 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 4 features, led in depth by RWS bathymetry-derived fishing zone at roughly 80 ft.
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 Maasmonding Offshore specifically, so confirm the current rules before you fish.
Check the official Netherlands fishing regulations →
Maasmonding Offshore is about 107 ft (33 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 coastal monitoring informs the atlantic herring, european flounder, european plaice, common sole, whiting, european seabass, garfish, atlantic mackerel, atlantic cod, thick-lipped grey mullet roster for Maasmonding Offshore. 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 feeding flat in about 7 ft of water that rates prime for european flounder in spring. 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 Maasmonding Offshore 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.
Haringvliet Offshore 2 mi · Maasvlakte Coast 5 mi · Nieuwe Waterweg 9 mi · Voorne Coast 9 mi · Delfland Coast 13 mi · Goeree Coast 14 mi · Haringvliet-west 16 mi · Grevelingenmeer 20 mi · Schouwen Coast 23 mi · Haringvliet-oost 23 mi · South Holland Stable Coast 24 mi · Hollandsche IJssel 27 mi
See how Maasmonding Offshore stacks up: best atlantic herring lakes in Netherlands · best european flounder lakes in Netherlands · best garfish lakes in Netherlands · best european seabass lakes in Netherlands
Browse all Netherlands fishing maps. See every water on DepthScout. Bathymetry credit: Rijkswaterstaat coastal and vaklodingen surveys, 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.