Below are possible answers for the crossword clue Sudden flood.
5 letter answer(s) to sudden flood
SPATE
(often followed by `of') a large number or amount or extent; "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"
a sudden forceful flow
the occurrence of a water flow resulting from sudden rain or melting snow
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