Floodland

Important to the description of surface water and wetlands is the floodlands of rivers and streams. Floodlands are the wide, gently sloping areas contiguous to and usually lying on both sides of a river or stream channel.

Source: wiktionary

The third type of surface water storage area consists of the floodlands generally associated with streams and water courses. Because of the absence of major lakes and the small areas of remaining wetlands, floodlands constitute the main […]

Source: wiktionary

This is the reason why there are fewer amphibia in the annual otter's diet in the River Pripyat floodlands (where there are virtually no common frogs) as compared to other large river basins.

Source: wiktionary

Drainage — During a storm, any part of the floodlands not reached by the flood can retain water in its soils and hydrological system, thereby reducing the probable height of the floodwaters.

Source: wiktionary