The Hermance () is a river in

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

and

Switzerland Switzerland, officially the Swiss Confederation, is a landlocked country located in west-central Europe. It is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland ...

, that discharges into Lake Geneva. It rises near Loisin in

Haute-Savoie Haute-Savoie () is a Departments of France, department in the Auvergne-Rhône-Alpes Regions of France, region of Southeastern France, bordering both Switzerland and Italy. Its Prefectures in France, prefecture is Annecy. To the north is Lake Gene ...

, France, at elevation. 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 elevation. Its total length is ( according to the

Sandre Sandre stands for ''Service d’administration nationale des données et des référentiels sur l’eau'', or National Service for Water Data and Common Repositories Management of France. The Sandre service establishes the common water data languag ...

database), of which 6.5 kilometres on the border. Its catchment area is , of which 37 km² in France. Flood control and other river maintenance issues are regulated under the 1959 Hermance River Agreement.Ariel Dinar ''et al.'', ''Transboundary Water Conflict, Negotiation and Cooperation'', World Scientific, 2007. ,
p. 185
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Notes and references

Rivers of France Rivers of Switzerland Rivers of the canton of Geneva Rivers of Auvergne-Rhône-Alpes Rivers of Haute-Savoie France–Switzerland border International rivers of Europe Border rivers {{Switzerland-river-stub

See also

Notes and references