?潮汐溢水道
... 直井式溢水道 Spillway drop inlet 冰川溢水道 glacial drainage channel 潮汐溢水道 tidal outfall ...
About 10 hectares of tidal salt marsh is being created by two outfall pipes which are opened to allow water to flow in and out.
BBC: Salt marsh returns to bomb site at South Efford reserve
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