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L'Ourse, or Ourse de Ferrère, is a French river in the Pyrenees, a tributary of la Garonne. It forms the Barousse valley. == Geography == According to the Sandre, its mother-course is the ruisseau de Seuès 〔(【引用サイトリンク】title=L'Ourse (O00-0460) )〕 which begins at 1,770 m high, NNW of the lac de Crouès.〔(Géoportail )〕 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 and then becomes l'Ourse. It joins the Garonne left bank at 441 m high in the commune of Loures-Barousse.〔 The area covered « Ruisseau de Seuès-Ourse de Ferrère-Ourse » is 25,4 km long,〔 for a watershed of 139 km wide.〔Superficie du bassin versant « L'Ourse du confluent de l'Ourse de Sost au confluent de la Garonne (O008) » sur (【引用サイトリンク】title=(O0081010) )〕 L'Ourse runs through 13 communes in the Hautes-Pyrénées, all located in the canton of Mauléon-Barousse, from high to low : Ferrère, Ourde, Mauléon-Barousse, Troubat, Bramevaque, Gembrie, Antichan, Créchets, Anla, Aveux, Sarp, Izaourt, et Loures-Barousse. It has 20 tributaries recorded by the Sandre,〔 of which two are more than 5 km long : * the Salabe, 6 km, left bank,〔(【引用サイトリンク】title=Ruisseau de Salabe (O0060570) )〕 * l'Ourse de Sost, 12,4 km, right bank.〔(【引用サイトリンク】title=L'Ourse de Sost (O0070500) )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ourse」の詳細全文を読む スポンサード リンク
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