Avre (Somme)
 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 1150 km² but only flows at best 51 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 river at Berteaucourt-les-Thennes.