| Ridnauner Bach | |
|---|---|
| Country | Italy |
| Basin features | |
| Main source | Ridnauntal (South Tyrol) |
| River mouth | Eisack at Sterzing |
| Basin size | 212 km2 (82 sq mi) |
| Physical characteristics | |
| Length | 25 km (16 mi) |
The Ridnauner Bach or Mareiter Bach is a stream in South Tyrol, Italy.
Coordinates: 46°52′47″N 11°27′08″E / 46.87972°N 11.45222°E