title: Avre (Somme)
text: # Avre (Somme)
  
  The Avre (French pronunciation: ​) is a river in Picardy, France, and is the principal tributary, from the left side, of the River Somme.
  
  ## Background
  
  At 66 kilometres (41 mi) 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.
  
  