Editing Waterway restoration (section)

===Tar canals===

The tar canals in [[Kajaani]] were canals and locks built to pass the Koivukoski and Ämmäkoski rapids. First used in 1846, the locks were vital in the transportation of wood [[pine tar]] to [[Oulu]]. The worn-down canals were closed in 1915. The refurbished Ämmäkoski lock was re-opened in 1984, but the Koivukoski canal has been totally dismantled and the site now houses a hydroelectric power plant. The refurbished canal is not used for transport, but in  the summertime, tar boat shows are organised for tourists.<ref>{{Cite web|url=https://www.kajaani.fi/kulttuuri-ja-liikunta/tapahtumat/kaupunkitapahtumat/tervakanavan-soutunaytokset/|title=Tervakanavan soutunäytökset|website=Kajaani}}</ref><ref>{{Cite web|url=http://kanaler.arnholm.nu/english/finland/koivukoskie.html|title=Avstängd webbplats|website=kanaler.arnholm.nu}}</ref>