Polder, low-lying area of land that has been artificially reclaimed from the sea or a lake, usually for agriculture. Polders are surrounded by...
Dyke flood prevention, a barrier used to control or confine water. Levee.
A levee, levée, dike (or dyke), embankment, floodbank or stopbank is a natural or ... to ensure that the foundation does not become waterlogged. [edit] River flood prevention
Dyke, a barrier used to control or confine water. See Levee.