| Kulmke | |
|---|---|
| Location | near Sieber in Osterode am Harz in Lower Saxony |
| Length | 2 km |
| Confluence | of the Große and Kleine Kulmke |
| Source height | 392 m |
| Mouth | Sieber |
| Mouth height | 355 m |
| Descent | 37 m |
| Basin | Weser |
| Progression | Sieber (river) → Oder (Harz) → Rhume → Leine → Aller → Weser |
| Catchment | ca. 13.5 km² |
The Kulmke is a tributary of the Sieber near Sieber in the district of Osterode am Harz in the north Germany state of Lower Saxony. It begins at 392 m with the confluence of the Große and Kleine Kulmke. It then flows 2 km in a west-southwesterly (later south-southwesterly) direction before discharging into the Sieber.