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Lock (water navigation) - Wikipedia
Erie Canal Locks - ID’s, Locations, Lifts, Distances, and Transit Times
What Are Canal Locks And How Do They Work? - Science ABC
Erie Canalway National Heritage Corridor :: Canal Locks and …
Falkirk Wheel - Wikipedia
Tuel Lane Lock - Wikipedia
Canal Safety: Navigating Locks, Tunnels, Aqueducts and …
Lock | Definition, Description, Canal, Types, & Facts | Britannica
How Do Canal Locks Work? - Practical Engineering
Canal Lock How To: An Essential Guide for Understanding How Locks …