b'HISTORIC CONSTRUCTIONThe Trent-Severn Waterway represents two centuries of engineering and construction innovationHistoric image of the Peterborough Lift Lock (top left, courtesy of W-van, CC BY-SA 3.0) alongside a 1918 map of the Trent-Severn Waterway. Bottom image shows the Peterborough Lift Lock today By Sarah B. Hood with files from Dennis Carter-EdwardsSAILING THROUGH HISTORYB lame it on those trips to Ottawa thatsomanyofustookin high school: the Rideau Canal, linkingOttawatoKingston, iswellknown.ButtheTrent-Severn Waterwayalso a National Historic Siteis comparatively overlooked, despite itslength(386kilometres)anditsfasci-nating place in the history of engineering and construction.Beginning at Trenton, on Lake Ontario, theTrent-SevernWaterwaysnakesall thewaytoLakeHuronatPortSevern onGeorgianBay,passingthroughnine different watersheds. It would take about a week to travel the entire route by water, meanderingthroughRiceLake,the Otonabee River, the Kawartha Lakes, Lake Simcoe, Lake Couchiching and the Severn Riveralongtheway,andencountering more than three dozen locks, two hydraulic lift locks, a marine railway and two dozen swing bridges. Water levels and movement are regulated by about 160 dams.34 AVENUESFALL 2022'