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 ...
in
Normandy
Normandy (; or ) is a geographical and cultural region in northwestern Europe, roughly coextensive with the historical Duchy of Normandy.
Normandy comprises Normandy (administrative region), mainland Normandy (a part of France) and insular N ...
, left tributary of the
Seine
The Seine ( , ) is a river in northern France. Its drainage basin is in the Paris Basin (a geological relative lowland) covering most of northern France. It rises at Source-Seine, northwest of Dijon in northeastern France in the Langres plat ...
.
The river begins in the
Orne
Orne (; or ) is a département in the northwest of France, named after the river Orne. It had a population of 279,942 in 2019.L'Aigle
L'Aigle is a commune in the Orne department in Normandy in northwestern France. Before 1961, the commune was known as ''Laigle''. According to Orderic Vitalis, the nest of an eagle (''aigle'' in French) was discovered during the construction ...
, crosses the western part of the department of
Eure
Eure ( ; ; or ) is a department in the administrative region of Normandy, northwestern France, named after the river Eure. Its prefecture is Évreux. In 2021, Eure had a population of 598,934.estuary
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime enviro ...
of the
Seine
The Seine ( , ) is a river in northern France. Its drainage basin is in the Paris Basin (a geological relative lowland) covering most of northern France. It rises at Source-Seine, northwest of Dijon in northeastern France in the Langres plat ...
on the left bank near
Berville-sur-Mer
Berville-sur-Mer is a commune in the Norman department of Eure in northern France.
The village is located on the banks of the Seine estuary, and was the crossing point of the river before the Pont de Normandie opened. It is the location of t ...
. Its upper valley is part of the
Pays d'Ouche
The Pays d'Ouche (, literally ''Land of Ouche'') is an historical and geographical region in Normandy. It extends from the southwest of Évreux up to Bernay and Beaumont-le-Roger as a northern limit, and down to L'Aigle and to Gacé in the sou ...
, its lower valley separates the regions of the Lieuvin and Roumois.
The Risle is regarded as a coastal river. Fishing is common downstream at
Pont-Audemer
Pont-Audemer () is a commune in the Eure department in the Normandy region in northern France.Natura 2000
Natura 2000 is a network of nature protection areas in the territory of the European Union. It is made up of Special Areas of Conservation and Special Protection Areas designated under the Habitats Directive and the Birds Directive, respectiv ...
site called
Risle, Guiel, Charentonne Risle, Guiel, Charentonne is a Natura 2000 site around the rivers and valleys of the Risle, Charentonne, Guiel and their tributaries and valleys of these rivers.
Geography
The area is 4,747 hectares in size and is mostly within the Eure departm ...
.
On July 30, 2012, the Risle vanished in a
ponor
A ponor is a natural opening where surface water enters into underground passages; they may be found in Karst topography, karst landscapes where the geology and the geomorphology is typically dominated by porous limestone rock. Ponors can drain s ...
between
La Ferrière-sur-Risle
La Ferrière-sur-Risle (, literally ''La Ferrière on Risle'') is a commune in the Eure department in the Normandy region in northern France.
Geography
The commune along with another 69 communes shares part of a 4,747 hectare, Natura 2000 con ...
and
La Houssaye
La Houssaye () is a commune in the Eure department in northern France.
Geography
The commune along with another 69 communes shares part of a 4,747 hectare, Natura 2000 conservation area, called Risle, Guiel, Charentonne.
Population
See al ...
. It runs underground for .
Its only major tributary is the
Charentonne
The Charentonne () is a 63 km long river in Normandy, left tributary of the Risle. The river begins in pays d'Ouche (Orne), in the forest of Saint-Évroult, in the south of the Saint-Évroult-Notre-Dame-du-bois village and the ruins of the ...
. The Risle flows through the following departments and communes:
*
Orne
Orne (; or ) is a département in the northwest of France, named after the river Orne. It had a population of 279,942 in 2019.Sainte-Gauburge-Sainte-Colombe,
L'Aigle
L'Aigle is a commune in the Orne department in Normandy in northwestern France. Before 1961, the commune was known as ''Laigle''. According to Orderic Vitalis, the nest of an eagle (''aigle'' in French) was discovered during the construction ...
*
Eure
Eure ( ; ; or ) is a department in the administrative region of Normandy, northwestern France, named after the river Eure. Its prefecture is Évreux. In 2021, Eure had a population of 598,934.Rugles
Rugles () is a commune in the Eure department in Normandy in northern France.
Geography
The commune along with another 69 communes shares part of a 4,747 hectare, Natura 2000 conservation area, called Risle, Guiel, Charentonne.
Population
...
,
Beaumont-le-Roger
Beaumont-le-Roger () is a commune in the department of Eure in Normandy region in northern France.
Geography
The commune is located in the valley of the Risle on the edge of the forest with which it shares its name. It is crossed by the Par ...
,
Brionne
Brionne () is a commune in the Eure department. Brionne is in the region of Normandy of northern France.
Geography
The commune along with another 69 communes shares part of a 4,747 hectare, Natura 2000 conservation area, called Risle, Guiel ...
,
Montfort-sur-Risle
Montfort-sur-Risle (, literally ''Montfort on Risle'') is a commune in the Eure department in Normandy region in northern France.
History
In Gallic times the river Risle delimited the territories of the tribes of Veliocasses and the Lexovii. ...