Ondaine
| Ondaine | |
|---|---|
| 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 (French pronunciation: [ɔ̃dɛn]) or Ondenon ([ɔ̃dnɔ̃]) is a river in the Loire department of France. It is a right tributary of the Loire.