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