flood control structure
object, structure, or system for managing flood water
flood barrier
specific type of floodgate, designed to prevent a storm surge or spring tide from flooding the protected area behind the barrier
levee
ridge or wall to hold back water
coastal management
defense against flooding and erosion
Dry dam
Flood control structure
balancing lake
type of flood defense
flood control channel
engineered canal designed to manage floodwater
flood wall
mostly vertical artificial barrier to temporarily contain the waters of a waterway which may flood