As nouns the difference between floodplain and bottomland
is that floodplain is an alluvial plain that may or may not experience occasional or periodic flooding while bottomland is flat land along a river, lying few feet above normal high water, often consisting of alluvial deposits and naturally fertile.
floodplain
English
Noun
(
flood plain)
(
en noun)
(geography) An alluvial plain that may or may not experience occasional or periodic flooding.
See also
* alluvial plain
bottomland
English
Noun
(
wikipedia bottomland)
Flat land along a river, lying few feet above normal high water, often consisting of alluvial deposits and naturally fertile.
See also
* floodplain