 |
| Marycha | |
|---|---|
 Marycha near Sejny | |
 | |
| Location | |
| Country | Poland, Lithuania, Belarus |
| Physical characteristics | |
| Mouth | |
• location | Czarna Hańcza |
• coordinates | 53°54′11″N 23°38′53″E / 53.903°N 23.648°E |
| Length | 80.8 km (50.2 mi) |
| Basin size | 432.4 km2 (167.0 sq mi) |
| Basin features | |
| Progression | Czarna Hańcza→ Neman→ Baltic Sea |
| Tributaries | |
| • left | Szlamica |
Marycha (Lithuanian: Seina) is a small river that serves as the natural Polish–Lithuanian and Lithuanian–Belarusian border. It starts around Puńsk, flows through the town of Sejny, passes through Pomorze Lake. It is a tributary of Czarna Hańcza.