Allondon
The Allondon (French pronunciation: [alɔ̃dɔ̃]) is a river in France (Auvergne-Rhône-Alpes region) and Switzerland (canton of Geneva). It is 17.9 km (11.1 mi) long,[1] of which 6.1 km in Switzerland and 2.5 km on the French–Swiss border.[2] Its source is located at 649 m (2,129 ft) elevation in the commune of Échenevex in the Ain department in eastern France. It flows into the Rhône at the village of Russin in the canton of Geneva in Switzerland. Its catchment area is 148 km2 (57 sq mi), of which 137 km2 in France.[2] It is home to the only recently known population of the rare insect Lachesilla rossica.
The source of the Allondon in Échenevex
The Allondon meets the Rhône
| Allondon | |
|---|---|
.jpg.webp) | |
   | |
| Location | |
| Countries | |
| Physical characteristics | |
| Source | |
| • location | Échenevex, France |
| • elevation | 649 m (2,129 ft) |
| Mouth | Rhône |
• coordinates | 46.1769°N 6.01°E |
| Length | 17.9 km (11.1 mi) |
| Basin size | 148 km2 (57 sq mi) |
| Discharge | |
| • average | 2.5 m3/s (88 cu ft/s) |
| Basin features | |
| Progression | Rhône→ Mediterranean Sea |
References
- Sandre. "Fiche cours d'eau - L'Allondon (V0410500)".
- "Fiche rivière no 1 : L'Allondon" (4th ed.). État de Genève, Département du territoire and Communauté de Communes du Pays de Gex. December 2010.
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