European Canal Lock System

Timeline

1. 1582–1585Spaarndam · North HollandMiter-gate pound locks at canal junctions in places like Spaarndam (rebuilt in 1572) continued operating in the 1580s, connecting the Spaar River and the Haarlemmermeer canal, a typical node linking river transport and artificial canals in the Dutch lock system.
2. 1584–1588Utrecht and Holland provinces · NetherlandsIn the 1580s, Dutch engineers drew detailed plans and made models of locks on the Waleresteijn canal, Alphen, Haarlemmerweg, and other sites, promoting standardized design and construction management of masonry chambers and composite gate structures.
3. 1586–1590Europe · EuropeThe miter gate, originating in fifteenth-century Italy, had become the mainstream form of European pound lock by the 1580s, sealing tightly under upstream water pressure and allowing wider chambers and less leakage than earlier lifting gates.
4. 1588–1590German and Low Country canals · Low Countries and GermanyTwo-gate lock chambers saved far more water per passage than flash locks, allowing multiple locks to be set in series on European canal routes with large water-level differences in the 1580s, supporting long-distance navigation of cargo barges.