| Ondaine | |
|---|---|
_L%27Ondaine.JPG) Ondaine at Le Chambon-Feugerolles | |
   | |
| Location | |
| Country | France |
| Physical characteristics | |
| Source | |
| • location | Planfoy |
| • coordinates | 45°22′49″N 4°25′31″E / 45.380171°N 4.425212°E |
| • elevation | 1,020 m (3,350 ft) |
| Mouth | Loire |
• location | Unieux |
• coordinates | 45°25′03″N 4°14′55″E / 45.417522°N 4.248569°E |
• elevation | 430 m (1,410 ft) |
| Length | 18.6 km (11.6 mi) |
| Basin size | 125 km2 (48 sq mi) |
| Basin features | |
| Progression | Loire→ Atlantic Ocean |
| Tributaries | |
| • left | Cotatay , Valchérie , Echapre , Gampille |
| • right | Egotay , Borde-Morning |
The Ondaine or Ondenon is a river in the Loire department of France. It is a right tributary of the Loire.