The Sensée (French pronunciation:[sɑ̃se]; Picard: Sinsée) is a river in northern France that crosses the département of Pas-de-Calais. The source is found at Croisilles and passes through Lécluse. It crosses the Canal du Nord at Arleux, and joins the canalized Escaut at Bouchain. The average descent is 2.42%. It is 47 km (29 mi) long: 27 km (17 mi) upstream of the Canal du Nord,[1] and 20 km (12 mi) downstream of the Canal du Nord.[2]