Terpene October 14, 2016October 24, 2016 thcscience_admin Transport portalEngineering portalThis category is for canals which opened in the year 1780. 17751776177717781779178017811782178317841786 1730s1740s1750s1760s1770s1780s1790s1800s1810s1820s1830s Pages in category "Canals opened in 1780" The following 3 pages are in this category, out of 3 total. This list may not reflect recent changes. G Givors canal Greasbrough CanalO Obvodny Canal