Kardingermaar

It once formed the most important drainage of the Vierendeel, the eastern part of the Innersdijken which transported its water to the North, to the Winsumerdiep at Onderdendam.

On the eastside there was a portage, named the Rollen which served as a shipping link with the Damsterdiep canal.

The region of the Vierendeel is combined with the area south of Bedum and now drains off through the Harm Westerskanaal and the pumping station Casper Hommes on the Boterdiep just north of Zuidwolde.

At the moment only the part between the railway-route Bedum - Stedum (there is a culvert here) and the Harm Westerskanaal is called the Kardingermaar.

The part between the Damsterdiep and the Noordermolen is now called the Borgsloot boven de Rollen.