Sluice Terherne, Navigation lock in De Fryske Marren, Netherlands.
Sluice Terherne is a lock facility in De Fryske Marren that allows boats to move between different water levels in the region's canal network. The structure consists of gates and chambers designed to manage water passage and maintain the height difference between the Tjeukemeer lake and surrounding waterways.
The lock was built as part of the Dutch water management system to enable navigation and control flooding in the Frisian region. It became essential infrastructure for both shipping and the drainage of agricultural land.
The lock represents the engineering skills of the Dutch people, serving as a meeting point where local residents gather to watch boats pass through.
The lock is accessible to recreational boats throughout the day during the navigation season when it operates according to daylight hours. Visitors should expect to wait if multiple boats are passing through at the same time.
The lock maintains precise water level differences between the Tjeukemeer lake and surrounding canals, supporting both navigation and regional water control.
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