The Allondon () is a

river A river is a natural stream of fresh water that flows on land or inside Subterranean river, caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of ...

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 ...

(

Auvergne-Rhône-Alpes Auvergne-Rhône-Alpes (; AURA) or ; or ; . is a Regions of France, region in southeast-central France created by the 2014 territorial reform of French regions; it resulted from the merger of Auvergne and Rhône-Alpes. The new region came into e ...

region) 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 ...

(

canton of Geneva The Canton of Geneva, officially the Republic and Canton of Geneva, is one of the Cantons of Switzerland, 26 cantons of the Switzerland, Swiss Confederation. It is composed of forty-five Municipality, municipalities, and the seat of the governme ...

). It is long, of which 6.1 km in Switzerland and 2.5 km on the French–Swiss border. Its source is located at elevation in the commune of

Échenevex Échenevex () is a Communes of France, commune in the Ain Departments of France, department in eastern France. , it is the commune with the fifth highest median per capita income (€51,020 per year) in France.Ain Ain (, ; ) is a French department in the Auvergne-Rhône-Alpes region, Eastern France. Named after the Ain river, it is bordered by the Saône and Rhône rivers. Ain is located on the country's eastern edge, on the Swiss border, where it ...

department in eastern France. It flows into the

Rhône The Rhône ( , ; Occitan language, Occitan: ''Ròse''; Franco-Provençal, Arpitan: ''Rôno'') is a major river in France and Switzerland, rising in the Alps and flowing west and south through Lake Geneva and Southeastern France before dischargi ...

at the village of

Russin Russin () is a Municipalities of Switzerland, municipality in the Cantons of Switzerland, canton of Geneva (canton), Geneva in Switzerland. History Russin is first mentioned around 1100 as ''Russino und Rucins''. In 1217 it was mentioned as ''R ...

in the

in Switzerland. Its catchment area is , of which 137 km² in France. It is home to the only recently known population of the rare insect '' Lachesilla rossica''. File:Sources de l'Allondon 11-05-2007.jpg, The source of the Allondon in

Échenevex Échenevex () is a Communes of France, commune in the Ain Departments of France, department in eastern France. , it is the commune with the fifth highest median per capita income (€51,020 per year) in France.List of rivers of France This is a list of rivers that are at least partially in France. The rivers are grouped by sea or ocean. The rivers flowing into the sea are sorted along the coast. Rivers flowing into other rivers are listed by the rivers they flow into. Some rive ...

List of rivers of Switzerland The following is a list of rivers of Switzerland (and tributaries thereof). Included rivers flow either entirely or partly through Switzerland or along its international borders. Swiss rivers belong to five drainage basins, i.e. of the Rhine, th ...

References

External links

* Rivers of France Rivers of Switzerland Rivers of Auvergne-Rhône-Alpes Rivers of the canton of Geneva Rivers of Ain International rivers of Europe Ramsar sites in Metropolitan France Ramsar sites in Switzerland {{France-river-stub