The Ourse, or Ourse de Ferrère, is a French

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...

in the

Pyrenees The Pyrenees (; es, Pirineos ; french: Pyrénées ; ca, Pirineu ; eu, Pirinioak ; oc, Pirenèus ; an, Pirineus) is a mountain range straddling the border of France and Spain. It extends nearly from its union with the Cantabrian Mountains to C ...

, a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Garonne The Garonne (, also , ; Occitan, Catalan, Basque, and es, Garona, ; la, Garumna or ) is a river of southwest France and northern Spain. It flows from the central Spanish Pyrenees to the Gironde estuary at the French port of Bordeaux – a ...

. It is long. It forms the

Barousse valley The Barousse is a small region of southwestern France, including the valley of the Ourse, a left tributary of the Garonne, in the Hautes-Pyrénées, and the smaller valley of Siradan. The main towns are Loures-Barousse and Mauleon-Barousse. To ...

Geography

According to the Sandre, its mother-course is the ruisseau de Seuès which begins at 1,770 m high, NNW of the lac de Crouès.Géoportail
/ref> After a few km, it is joined left by the Salabe runlet and then becomes l'Ourse de Ferrère, which joins l'Ourse de Sost at

Mauléon-Barousse Mauléon-Barousse (; oc, Maulion de Varossa) is a commune in the Hautes-Pyrénées department in south-western France. Geography Climate Mauléon-Barousse has a oceanic climate (Köppen climate classification ''Cfb''). The average annual tempe ...

and then becomes l'Ourse. It joins the

left bank at 441 m high in the commune of

Loures-Barousse Loures-Barousse (; oc, Loras de Varossa) is a commune in the Hautes-Pyrénées department in south-western France. See also * Communes of the Hautes-Pyrénées department * Barousse valley The Barousse is a small region of southwestern France, ...

. The stream length of the path « Ruisseau de Seuès-Ourse de Ferrère-Ourse » is 25.4 km, for a

watershed Watershed is a hydrological term, which has been adopted in other fields in a more or less figurative sense. It may refer to: Hydrology * Drainage divide, the line that separates neighbouring drainage basins * Drainage basin, called a "watershe ...

of 139 km². L'Ourse runs through 13 communes in the

Hautes-Pyrénées Hautes-Pyrénées (; Gascon/Occitan: ''Nauts Pirenèus / Hauts Pirenèus'' awts piɾeˈnɛʊs es, Altos Pirineos; ca, Alts Pirineus alts piɾiˈneʊs English: Upper Pyrenees) is a department in the region of Occitania, southwestern France. ...

, all located in the canton of Mauléon-Barousse, from high to low :

Ferrère Ferrère (; oc, Harrèra) is a Communes of France, commune in the Hautes-Pyrénées Departments of France, department in south-western France. See also *Communes of the Hautes-Pyrénées department References

Communes of Hautes-P ...

Ourde Ourde (; oc, Orda) is a commune in the Hautes-Pyrénées department in south-western France. Population See also * Communes of the Hautes-Pyrénées department * Barousse valley The Barousse is a small region of southwestern France, including ...

Troubat Troubat is a commune in the Hautes-Pyrénées department in south-western France. File:Troubat église vue depuis château comtes Comminges (3).jpg, File:Plan de la grotte de Sainte Araille.png, File:Entrée de la Grotte de Troubat - Vallée d ...

Bramevaque Bramevaque (; oc, Brauvaca) is a commune in the Hautes-Pyrénées department in southwestern France. Population See also *Communes of the Hautes-Pyrénées department *Barousse valley The Barousse is a small region of southwestern France, inc ...

Gembrie Gembrie is a commune in the Hautes-Pyrénées department in south-western France. See also *Communes of the Hautes-Pyrénées department An intentional community is a voluntary residential community which is designed to have a high degree of ...

Antichan Antichan (; oc, Antishan) is a commune in the Hautes-Pyrénées department in southwestern France. Population See also *Communes of the Hautes-Pyrénées department *Barousse valley The Barousse is a small region of southwestern France, includ ...

Créchets Créchets is a commune in the Hautes-Pyrénées department in south-western France. See also *Communes of the Hautes-Pyrénées department An intentional community is a voluntary residential community which is designed to have a high degree ...

Anla Anla (; oc, Anlar) is a commune in the Hautes-Pyrénées department in southwestern France. See also *Communes of the Hautes-Pyrénées department An intentional community is a voluntary residential community which is designed to have a hig ...

Aveux Aveux (; oc, Avèus) is a commune in the Hautes-Pyrénées department in southwestern France. Population See also *Communes of the Hautes-Pyrénées department An intentional community is a voluntary residential community which is designed ...

Sarp Sarp is a commune in the Hautes-Pyrénées department in south-western France. See also *Communes of the Hautes-Pyrénées department * Barousse valley The Barousse is a small region of southwestern France, including the valley of the Ourse, a l ...

Izaourt Izaourt is a commune in the Hautes-Pyrénées department in south-western France. See also * Communes of the Hautes-Pyrénées department * Barousse valley The Barousse is a small region of southwestern France, including the valley of the Ourse, ...

, et

. It has 20 tributaries recorded by the Sandre, of which two are more than 5 km long : * the Salabe, 6.0 km, left bank, * l'Ourse de Sost, 12,4 km, right bank.

References

{{Reflist Rivers of France Rivers of Occitania (administrative region) Rivers of Hautes-Pyrénées