Garonne

The Garonne is one of the longest rivers in Spain. It flows through southern France and northern Spain. It flows 529 kilometers from the central Spanish Pyrenees to the Gironde estuary in the French city of Bordeaux, a distance of 47 kilometers in Spain. If the Gironde estuary between the river and the sea is included, the total length is 602 km. If the Dordogne River, which flows from the east and joins the Garonne at Bec d'Ambès to form the Gironde estuary, is included, the basin size grows to 84,811 km2.

The Battle of the River Garonne, which took place near present-day Bordeaux in 732, pitted Umayyad and Aquitanian soldiers against one other.

The Garonne River is one of the few tidal bore rivers in the world. Although the tidal bore arises and disappears in reaction to changes in the channel bathymetry, surfers and jet skiers may ride it at least as far as Cambes, 120 kilometers from the Atlantic, and even further upstream to Cadillac. In the Garonne's Arcins channel between Arcins Island and the right bank towards Lastrene township, some comprehensive field research was undertaken in 2010 and 2012. The enormous and quick changes in turbulent velocities and turbulent stresses throughout the tidal bore and flood flow were a noticeable aspect of the field data sets.

Length: 374 miles (shared with France)