| White Ernz | |
|---|---|
| Country | Luxembourg |
| Basin features | |
| Main source | Grünewald |
| River mouth | Sauer River, at Reisdorf |
| Physical characteristics | |
| Length | 30 km (19 mi) |
The White Ernz (Luxembourgish: Wäiss Iernz, French: Ernz blanche, German: Weiße Ernz) is a river flowing through Luxembourg, joining the Sauer at Reisdorf. It flows through the towns of Larochette, Medernach and Ermsdorf. The river valley also includes the notable feature of having a twin castle from the 14th century named Larochette Castle.
Coordinates: 49°51′37″N 6°14′47″E / 49.86021°N 6.24652°E