Canche
 The river Canche (Dutch: De Kwinte) is one of the rivers that flow from the plateau of the southern Boulonnais and Picardy into the English Channel. The Somme is the largest example. The basin of the Canche extends to 1274 square kilometres and lies in the southern end of the département of Pas-de-Calais. Forming an alluvial valley from 1 to 2 kilometers wide the Canche is a verdant landscape of calm waters marshes meadows and small woods.