Aerial images of the flooded Aa river in France's northern Pas-de-Calais
Aerial images of the flooded Aa river in France's northern Pas-de-Calais

Aerial images show the village of Esquerdes, partially flooded by the river Aa.

Flooding has affected dozens of towns across the country's north, with no decrease in water levels expected until Friday, according to Météo-France.