Claim: Canal de la Deûle, one of the oldest canals in northern France which is simply referred as Deûle, has a length of 34.8 kilometers which starts from Bauvin and ends in Deûlémont on the river Lys.
Evidence: Starting at the Lys river (PK 35), it passes through the village of Deûlémont and a boat harbour at site of a former lock (PK 34), Quesnoy-sur-Deûle (PK 30), Wambrechies (PK 25) with another popular boat harbour, Marquette-lez-Lille and the junction with the Canal de Roubaix (PK 23), Lille (PK 21-16), then Don (Nord) (PK 4) to reach the triangular junction with the main waterway at Bauvin (PK 0).