The Hermance (French pronunciation: [ɛʁmɑ̃s]) is a river in France and Switzerland, that discharges into Lake Geneva.[1] It rises near Loisin in Haute-Savoie, France, at 563 m (1,847 ft) elevation.[2] In its lower half, downstream from Veigy, it marks the Swiss-French border. It flows into Lake Geneva between the villages Hermance (Switzerland) and Chens-sur-Léman (France), at 372 m (1,220 ft) elevation.[2] Its total length is 14 km (8.7 mi) (13 km (8.1 mi) according to the Sandre database),[1] of which 6.5 kilometres on the border. Its catchment area is 42.5 km2 (16.4 sq mi), of which 37 km2 in France.[2]
| Hermance | |
|---|---|
 | |
   | |
| Location | |
| Countries | France and Switzerland |
| Physical characteristics | |
| Source | |
| • elevation | 563 m (1,847 ft) |
| Mouth | Lake Geneva |
• coordinates | 46°18′15″N 6°14′30″E / 46.3042°N 6.2417°E |
• elevation | 372 m (1,220 ft) |
| Length | 14 km (8.7 mi) |
| Basin size | 42.5 km2 (16.4 sq mi) |
| Basin features | |
| Progression | Lake Geneva→ Rhône→ Mediterranean Sea |
Flood control and other river maintenance issues are regulated under the 1959 Hermance River Agreement.[3]
Notes and references edit
- ^ a b Sandre. "Fiche cours d'eau - L'Hermance (V0350700)".
- ^ a b c "Fiche rivière no 4 : L'Hermance" (2nd ed.). État de Genève, Département du territoire and Syndicat mixte des affluents du sud-ouest lémanique. April 2008.
- ^ Ariel Dinar et al., Transboundary Water Conflict, Negotiation and Cooperation, World Scientific, 2007. ISBN 981-256-893-X, ISBN 978-981-256-893-9. p. 185
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