The Mamonovka or Banovka (Russian: Мамоновка, Polish: Banówka) is a river between Russia (Kaliningrad Oblast) and Poland (Warmian-Masurian Voivodship). It flows into the Vistula Lagoon. It is 51 km long and has a 311 km2 drainage basin.
Map of r. Mamonovka, Kaliningradskaya Oblast, Russia
The Ignatievka River and the Vitushka River are tributaries of the Mamonovka.
References
Mamonovka Wikipedia(Text) CC BY-SA