Floods (7)
I believe the answer is:
deluges
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">floods</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for deluges that I've seen before include "Heavy downpours of rain" , "swamps" .)