The Lunain () is a long river in the

Yonne Yonne (, in Burgundian: ''Ghienne'') is a department in the Bourgogne-Franche-Comté region in France. It is named after the river Yonne, which flows through it, in the country's north-central part. One of Bourgogne-Franche-Comté's eight con ...

and

Seine-et-Marne Seine-et-Marne () is a department in the Île-de-France region in Northern France. Named after the rivers Seine and Marne, it is the region's largest department with an area of 5,915 square kilometres (2,284 square miles); it roughly covers its ...

departments Department may refer to: * Departmentalization, division of a larger organization into parts with specific responsibility Government and military * Department (administrative division), a geographical and administrative division within a country, ...

in north-central

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 ...

. It is a right tributary of the

Loing The Loing () is a long river in central France, a left tributary of the Seine. Its source is in Sainte-Colombe-sur-Loing, in the southwest of the departments of France, department of Yonne, and it flows into the Seine in Saint-Mammès, near Mo ...

. Its source is in

, less than south-west of Égriselles-le-Bocage. It joins the

Épisy Épisy () is a former commune in the Seine-et-Marne department in the Île-de-France region in north-central France. On 1 January 2016, it was merged into the new commune Moret-Loing-et-Orvanne.Seine-et-Marne Seine-et-Marne () is a department in the Île-de-France region in Northern France. Named after the rivers Seine and Marne, it is the region's largest department with an area of 5,915 square kilometres (2,284 square miles); it roughly covers its ...

Départements and communes it runs through

*Yonne: Égriselles-le-Bocage, Courtoin, La Belliole, Montacher-Villegardin,

Chéroy Chéroy () is a commune in the Yonne department in Bourgogne-Franche-Comté in north-central France. Geography The river Lunain forms part of the commune's northern border. See also *Communes of the Yonne department The following is a list ...

*Seine-et-Marne: Vaux-sur-Lunain, Lorrez-le-Bocage-Préaux, Paley, Nanteau-sur-Lunain,

Treuzy-Levelay Treuzy-Levelay is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France. Demographics Inhabitants of Treuzy-Levelay are called ''Velytreuziens''. Geography The commune is traversed by the Lunain river ...

, Nonville, La Genevraye, Villemer,

Épisy Épisy () is a former commune in the Seine-et-Marne department in the Île-de-France region in north-central France. On 1 January 2016, it was merged into the new commune Moret-Loing-et-Orvanne.Rivers of France Rivers of Bourgogne-Franche-Comté Rivers of Île-de-France Rivers of Yonne Rivers of Seine-et-Marne {{France-river-stub