 A new channel was dredged several times, the first time to the order of King Gustav I in the 16th century.By the 18th century, the waterway had again ceased to be navigable, and the current canal was dug by the Swedish Army between 1820 and 1840, with traffic using it from 1835 onwards.At the beginning of the 20th century the channel was straightened, widened and deepened.