The Garonne river from its source to the Gironde river and the Atlantic
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The Garonne has its source in the Aran Valley (Aragon ) and flows 602 km to the Atlantic Ocean (Gironde). The river crosses the Tarn at Saint Nicolas de la Grave ( Tarn-et-Garonne ) and the Lot, at Aiguillon ( Lot-et-Garonne ). It is navigable from the Atlantic to Castets-en-Dorthe where it joins the Canal de Garonne that continues to Toulouse. The river is extremely popular for whitewater activities such as canoeing, kayaking and fishing.