The Jeziorsko reservoir is the largest artificial lake in the Lodz Voivodeship, created on the Warta river. It is one of the best inland kitesurfing spots in central Poland. The water body is vast (about 42 km2), offering long sailing distances. The water is shallow in many areas, with a sandy and muddy bottom. In strong winds, significant chop can form on this large expanse. The spot works with winds from all directions thanks to the size of the lake. West and southwest winds are the most frequent. It is a popular spot for riders from Lodz and central Poland, with a sailing season from May to October.