The longer Bandak–Norsjø Canal was opened in 1892 by the Minister of Labour Hans Hein Theodor Nysom.

Log floating is no longer practiced, due to the closing of Union, a local paper factory.

The Telemark Canal consists of 18 locks, is 105 kilometres (65 mi) long and has a total difference in elevation of 72 metres (236 ft).

The biggest staircase lock is Vrangfoss, which has five chambers and a lifting height of 23 metres (75 ft).

The riverboats Henrik Ibsen and Victoria travel with tourists from Skien to Dalen via Kviteseid.