Larcis

The Arcis^[1] or Larcis^[2] (with article agglutination; Occitan: Arsís) is a river in Southwestern France. It is a right tributary of the Léez, originating in the commune Luc-Armau in the east of the Pyrénées-Atlantiques. It joins the Léez in Lannux, in the French département of the Gers. It is 34.8 km (21.6 mi) long.^[2]

Arcis Larcis
Show map of France Show map of Nouvelle-Aquitaine
Location
Country	France
Physical characteristics
Source
• location	Luc-Armau
Mouth	Léez
• coordinates	43.6312°N 0.2325°W / 43.6312; -0.2325
Length	34.8 km (21.6 mi)
Basin features
Progression	Léez→ Adour→ Atlantic Ocean

Name

The name is documented as Arsiis (1540), Arciis (1542), Arcis (1863). The name of the Arcison, a left tributary of the Layon, is related.

Main tributaries

• (L) Lizo,
• (L) Léès, from Saubole.