tidal barrier

A tidal barrier is a man-made structure built across a river or estuary to control water flow caused by tides. It helps prevent flooding during high tide by blocking water from moving upstream, while allowing water to flow out when the tide recedes. Think of it as a dam that can be opened or closed depending on the tide, protecting areas from excessive water levels and managing flood risks. Tidal barriers are used in locations where rising tides could threaten communities, infrastructure, or ecosystems.