Ketelmeer is a lake of roughly 3,500 hectares situated between the Noordoostpolder to the north and Oostelijk Flevoland to the south.

It forms the tongue of the IJsselmeer into which the IJssel drains, and serves as a key link in the chain of bordering lakes connecting the IJsselmeer to the Zwarte Meer and Veluwemeer.

The lake's shallow waters and willow-covered islands create a distinctive marsh-delta landscape. The area is well suited to water sports, cycling, and hiking, with quiet, well-maintained paths running along the dikes.

Towns such as Kampen and Dronten provide parking and public transport connections for those looking to explore the surrounding route network, and the Ketelbrug is a common reference point for access to the waterfront.