Avre (Somme)

Avre
The Avre at La Neuville-Sire-Bernard
Country	France
Basin features
Main source	Amy, Oise 280 m (920 ft)
River mouth	Somme 49°53′0″N 2°20′25″E / 49.88333°N 2.34028°E / 49.88333; 2.34028 (Somme-Avre)Coordinates: 49°53′0″N 2°20′25″E / 49.88333°N 2.34028°E / 49.88333; 2.34028 (Somme-Avre)
Progression	Somme→ English Channel
Basin size	1,150 km2 (440 sq mi)
Physical characteristics
Length	66 km (41 mi)
Discharge	Average rate: 5.1 m3/s (180 cu ft/s)

The Avre is a river in Picardie and is the principal tributary, from the left side, of the Somme. At 66 kilometres long, it drains a relatively important basin of 1,150 km² but only flows at best 5,1 m³/s near its confluence at Longueau.
Its principal tributaries are: the Noye, joining at Boves, the Trois Doms joining at Pierrepont-sur-Avre, the Brache joining at Braches and the Luce at Berteaucourt-les-Thennes.