The water quality of Plas Merwelanden at Dordrecht
What is the swimming water like? Plas Merwelanden? On the water map below you'll see the swimming location in its immediate vicinity. On the right of on this page you will find all information about the current weather, at the bottom of the swimming spots in the area.
Open the Water Map for Dordrecht in full window
The swimming lake Merwelanden is located in the Hollandse Biesbosch en located ten east of Dordrecht and ten south of Sliedrecht.
Swimming spots nearby
The weather in Dordrecht, now:
12.4°C
Zwaar bewolkt
Wind Force bft | Knopen | 19 km/h
Wind direction N
Today: In het zuidoosten en oosten regen, in het noordwesten zon.
Extended weather forecast for Dordrecht (click)
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Swim at Plas Merwelanden
Summary
Measurements
E.coli30 n/dl
Enterococci15 n/dl
Water temperature~15.9 °C
Measurement timeQuality: 21-04-2026Temperature: 4 mei, 20:10
Facilities & contact
Information board
WC / Toilets
Sandy beach
Waste bins
WC / Toilets
Sandy beach
Waste bins
Address
Baanhoeksweg, Dordrecht
Administrator
Parkschap Nationaal Park De Biesbosch
J.van.Dam@dordrecht.nl
Phone: 06-53324076
Baanhoeksweg, Dordrecht
Administrator
Parkschap Nationaal Park De Biesbosch
J.van.Dam@dordrecht.nl
Phone: 06-53324076
Photo
Information board
Details
The water temperature value comes from the nearest official Rijkswaterstaat measuring station and is an approximation for this location. Always take local conditions into account, it is usually colder in deeper water than on the shore!
The water quality measurement is based on the amount of bacteria in nanograms per deciliter (n /dl). In this case it concerns the intestinal bacteria Escherichia coli (E.coli) and intestinal enterococci, which occur in the feces of both animals and humans. A suddenly high value is often related to bird droppings in the water, for example, but can certainly also have other causes. It is unwise to swim in water where these values exceed the standards. The water manager also inspects the bathing water areas for other types of pollution, such as blue-green algae or other toxic algae and general safety features.
The water quality measurement is based on the amount of bacteria in nanograms per deciliter (n /dl). In this case it concerns the intestinal bacteria Escherichia coli (E.coli) and intestinal enterococci, which occur in the feces of both animals and humans. A suddenly high value is often related to bird droppings in the water, for example, but can certainly also have other causes. It is unwise to swim in water where these values exceed the standards. The water manager also inspects the bathing water areas for other types of pollution, such as blue-green algae or other toxic algae and general safety features.