Crossword Clue:

an area of land flooded by a river

AnswerCrossword Clue
EUROPELand area personified by a princess
BASINArea drained by a river.
BASINTract of land drained by a river.
BASINLand drained by a river.
HOLMFlat land by a river
AUSTRALIALand referred to by an A in "Anzac"