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24,587-acre river near Dordrecht. The river tops out around 86 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Below is the species-by-species picture, pulled from the same data the map uses.
Shoreline on the chart totals 145.9 miles, broken up by 2 islands. An index of 8.2 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 41% of the surface — that's where the groceries are. Call it 37 mi long by 20.2 mi wide at the broadest reach. For a second option, Hollandsche IJssel lies 7 mi northwest.
Vis- en dieptekaart van Oude Maas, Nederland: gemeten dieptelijnen (Rijkswaterstaat) tot 26 m, met visstekken voor baars, snoekbaars, karper. De dieptelijnen zijn berekend uit gemeten bodemhoogten van Rijkswaterstaat en het officiële lokale streefpeil (NAP). Gebruik de kaart als visgids, nooit voor navigatie.
The spring pattern is a shallow one: european perch in 3 to 12 ft. As the season builds they drop to 8 to 28 ft, wintering in 12 to 33 ft. Top water on the chart: Measured depth break, a drop-off in the 24 ft range, prime in summer. Time it for early morning. Summer baits: a drop-shot micro plastics or a small crankbait (perch pattern) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Measured shallow feeding flat (9 ft) | Small jig + curly tail, Inline spinner #1-2 |
| Summer | 8 to 28 ft | dawn | Measured depth break (24 ft) | Drop-shot micro plastics, Small crankbait (perch pattern) |
| Fall | 10 to 33 ft | midday | Measured depth break (24 ft) | Jigging spoon (small), Drop-shot on deep flats |
| Winter | 12 to 33 ft | midday & dawn | Measured depth break (24 ft) | Tungsten jig + maggots, Small balance jig |
The spring pattern is a shallow one: zander in 4 to 15 ft. As the season builds they drop to 15 to 35 ft, wintering in 20 to 40 ft. Top water on the chart: Measured depth break, a drop-off in the 24 ft range, prime in fall. Time it for the evening and early morning. Summer baits: a vertical softbait over humps or a deep crankbait gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | open water | Softbait on jighead (10-12 cm), Shallow crankbait at dusk |
| Summer | 15 to 35 ft | dusk & dawn | Measured depth break (24 ft) | Vertical softbait over humps, Deep crankbait |
| Fall | 12 to 40 ft | dusk & night | Measured depth break (24 ft) | Big softbait (12-16 cm) slow-rolled, Jigging spoon |
| Winter | 20 to 40 ft | dusk & dawn | Measured depth break (24 ft) | Vertical jig / mormyshka with bait, Slow blade bait |
Spring puts common carp in skinny water — 2 to 10 ft is the zone. As the season builds they drop to 3 to 15 ft, wintering in 10 to 30 ft. Spring common carp concentrate at Measured shallow feeding flat, a prime-rated feeding flat around 9 ft. Warm-month bites cluster around early morning and the evening.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Measured shallow feeding flat (9 ft) | |
| Summer | 3 to 15 ft | dawn & dusk | Measured shallow feeding flat (9 ft) | |
| Fall | 5 to 18 ft | midday | Measured shallow feeding flat (9 ft) | |
| Winter | 10 to 30 ft | midday | open water |
Come spring, look for european flounder tight to the bank in 5 to 25 ft. Expect a summer slide to 6 to 35 ft, then a winter hold in 15 to 50 ft. Start at Measured shallow feeding flat. It's a feeding flat holding about 20 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A bottom jig with spinner blade is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dusk | Measured shallow feeding flat (20 ft) | Small bucktail dragged on bottom |
| Summer | 6 to 35 ft | dawn & dusk | Measured shallow feeding flat (20 ft) | Bottom jig with spinner blade |
| Fall | 8 to 40 ft | dusk | Measured depth break (24 ft) | Compact bottom jig |
| Winter | 15 to 50 ft | midday | Measured depth break (24 ft) | Small bottom jig |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Measured shallow feeding flat, a feeding flat in the 5 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Measured shallow feeding flat (5 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Measured shallow feeding flat (20 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Measured shallow feeding flat (9 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Measured shallow feeding flat (9 ft) | Tip-ups, Large jigging spoon |
Structure-wise the chart holds 12 features, led in depth by Measured deep channel at roughly 86 ft.
Season dates, license requirements, and size and bag limits for Netherlands waters are set by the Sportvisserij Nederland (VISpas & VISplanner) — and special regulations can apply to Oude Maas specifically, so confirm the current rules before you fish.
Check the official Netherlands fishing regulations →
Oude Maas is about 86 ft (26 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Anglers target european perch, zander, common carp, european flounder, northern pike on Oude Maas. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Measured depth break is the top-rated area: a drop-off in about 24 ft of water that rates prime for zander in fall. Every other rated spot, per species and season, is on the map above.
For european perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Oude Maas is regulated by the Sportvisserij Nederland (VISpas & VISplanner). Check the official Netherlands regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Hollandsche IJssel 7 mi · Dordtse Biesbosch 7 mi · Boven- en Beneden Merwede 7 mi · Brabantse Biesbosch 9 mi · Nieuwe Maas 10 mi · Haringvliet-oost 15 mi · Bergsche Maas 15 mi · Volkerak 23 mi · Beneden Maas 24 mi · Nieuwe Waterweg 24 mi · Haringvliet-west 25 mi · Delfland Coast 26 mi
See how Oude Maas stacks up: best zander lakes in Netherlands · best northern pike lakes in Netherlands · best european perch lakes in Netherlands · best common carp lakes in Netherlands
Browse all Netherlands fishing maps or 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.