| Marka | |
|---|---|
 | |
| Location | |
| Country | Germany |
| State | Lower Saxony |
| Physical characteristics | |
| Mouth | |
• location | Sagter Ems |
• coordinates | 53°01′27″N 7°44′42″E / 53.0242°N 7.7449°E / 53.0242; 7.7449 |
| Length | 28.7 km (17.8 mi)1 |
Basin size | 142 km2 (55 sq mi)1 |
| Basin features | |
| Progression |
Leda→ Ems→ North Sea |
Marka is a 28.7 km (17.8 mi) long river in Lower Saxony, Germany.1 At its confluence with the Ohe west of Friesoythe, the river Sagter Ems is formed.