The water quality of Zwaneveldsgat, Kolham at Kolhalm

What is the swimming water like? Zwaneveldsgat, Kolham? 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 Kolhalm in full window
The swimming location Zwaneveldsgat is located te Kolham. Kolham is a regional village on a sand ridge.



Swimming spots nearby

1. Zuidlaardermeer, meerwijck: water quality is good
2. Zwaneveldsgat, kolham: water quality is warning


The weather in Kolhalm, now:



The current weather in Kolhalm is Onbewolkt
Wind Force 1 bft | 1.9 Knopen | 3.6 km/h
Wind direction ZW
Wind arrow
Today: Veel zon en droog, morgen meer bewolking en plaatselijk wat regen


Extended weather forecast for Kolhalm (click)



Swim at Zwaneveldsgat, Kolham

The bathing water quality at Zwaneveldsgat, Kolham is warning
Last check 08-07-2024

E.coli: 61 n/dl (below 1800 is ok)
Intestinal enterococci: 15 n/dl (under 400 is ok)
There is a warning for blue algae at this swimming spot. So you run the risk of skin irritation and stomach/intestinal complaints if you swim here.
This warning applies since: 19-05-2024
Information board
Sandy beach
Waste bins
Dogs allowed
Descending bottom

Water temperature


Measurement time: 24 juli, 20:10
(more info)
Uiterdijk, Kolhalm
Do you have any questions about this swimming location? Contact the administrator:

Provincie Groningen
Phone: 050-31 64 911
Notifications about bathing water quality:
Provincie Groningen
050-31 64 911

Information board

The information board at the swimming location Zwaneveldsgat, Kolham


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.

More information about this swimming location can be found at

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