Jeziorak (German: Geserichsee) is a lake in the Iława Lake District in Warmia-Masuria, Poland.
The maximum depth is 13 metres (43 ft).
It is the longest lake in Poland, and ranks 6th by area.
[1] The lake was formed by filling a glacial tunnel valley.
This article about a location in Warmian-Masurian Voivodeship is a stub.