There were already early drainage ditches in Potsdam by the Middle Ages. In 1722 Frederick William I had the existing municipal ditch straightened, deepened and lined with wood. The City Canal formed a branch of the Havel and was thus supplied with water from the river. It ran a distance of one and a half kilometres through the centre of Potsdam. Already in the early 19th century the canal was filled up. In 1999 started the restoration of the whole canal in sections. The already restored part at Yorckstraße is temporarily filled with water and is used as setting for the annual Canoe Canal Sprint.