A polder is an area of land closed by the channel that creates a man-made hydrological entity. Polders are classified into three types: Land that has been recover from a body of water, such as a lake or the seafloor. A channel is a channel that divides flood plains from the sea or river.
As a result, the assertion is correct.
About Polder:
- Polder is a Dutch which first meant siltation land or an earthen wall, but has been used to indicate an area of land regained from the sea or inland water.
- It refers to a drained marsh, a reclaimed coastal zone, or a lake that has been dried out through pumping.
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