Hermance (river)

Hermance
Hermance (river) is located in France
Hermance (river)
Hermance (river) is located in Auvergne-Rhône-Alpes
Hermance (river)
Location
CountryFrance
DepartmentHaute-Savoie
CountrySwitzerland
CantonGeneva
Physical characteristics
Source 
 • elevation563 m (1,847 ft)
MouthLake Geneva
 • coordinates
46°18′15″N 6°14′30″E / 46.3042°N 6.2417°E / 46.3042; 6.2417
 • elevation
372 m (1,220 ft)
Length14 km (8.7 mi)
Basin size42.5 km2 (16.4 sq mi)
Basin features
ProgressionLake GenevaRhôneMediterranean Sea

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]

Flood control and other river maintenance issues are regulated under the 1959 Hermance River Agreement.[3]

  1. ^ a b Sandre. "Fiche cours d'eau - L'Hermance (V0350700)".
  2. ^ 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.
  3. ^ 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