In the 10th century part of the waters from the "Sorgue d'Entraigues" were diverted and today pass under the walls to enter the city. (See Sorgue). This watercourse is called the Vaucluse Canal but Avignon people still call it the "Sorgue" or "Sorguette". It is visible in the city in the "Rue des teinturiers" (street of dyers). It fed the moat around the first defensive walls then fed the moat on the newer eastern city walls (14th century). In the 13th century (under an Act signed in 1229) part of the waters of the Durance were diverted to increase the water available for the moats starting from Bonpas. This river was later called the "Durançole". The "Durançole" fed the western moats of the city and was also used to irrigate crops at Montfavet. In the city these streams are often hidden beneath the streets and houses and are currently used to collect sewerage.