Kleine Lonau
| Location | North-northeast of Lonau in Osterode am Harz district in Lower Saxony,  Germany |
|---|---|
| Length | ca. 4.2 km |
| Source height | 650 m |
| Confluence | with the Große Lonau to form the Lonau 51°41′24″N 10°21′33″E / 51.690028°N 10.359028°E |
| Mouth height | 339 m |
| Descent | 311 m |
| Basin | Weser |
| Progression | Lonau → Sieber → Oder → Rhume → Leine → Aller → Weser |
| Catchment | 4.2 km² |
The Kleine Lonau is one of the two headstreams of the Lonau in Lower Saxony, Germany.
Course
It rises at a height of 650 metres and flows through the Mariental valley to Lonau, where it merges with the Große Lonau to form the River Lonau. It is about 4.2 km long and 1.8 km shorter than the other headstream, the Große Lonau.