Gabas (river)

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Gabas
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Location
Country	France
Physical characteristics
Source
• location	Plateau of Ger
Mouth
• location	Adour
• coordinates	43°45′41″N 0°42′9″W / 43.76139°N 0.70250°W / 43.76139; -0.70250
Length	117 km (73 mi)
Basin features
Progression	Adour→ Atlantic Ocean

The Gabas (French pronunciation: [ɡabas]; Occitan: Gabàs) is a left tributary of the Adour, in the Landes, in the Southwest of France. It is 116.7 km (72.5 mi) long.^[1]

The name Gabas is derived from the French gave (Gascon: 'gabe'), which in the Pyrenees generically describes a small or large watercourse. The river was known as the fluvius gavasensis in 982.^{[2][better source needed]}

A tributary of the Léez is named the Gabassot, a hypocoristic of Gabas.

The Gabas rises in the plateau of Ger in the north of Lourdes, as the union of the Gabastou and the Honrède. It flows north-west like the neighboring rivers: the Luy, the Uzan and the Ousse.

The Gabas crosses the Tursan, in the Landes. It flows into the Adour in Toulouzette, downstream from Saint-Sever.

A dam of 20 million cubic metres (16,000 acre⋅ft) was built in its upper course to regulate the lowest water level.

• (R) the Bayle from Lourenties
• (R) the Bas, from Geaune
  • (R) the Lescoû, from Saint-Loubouer
  • (L) the Petit Bas, from Pimbo
• (L) the Laudon, from Hagetmau