deluge

an overwhelming number or amount; “a flood of requests”; “a torrent of abuse”

a heavy rain

the rising of a body of water and its overflowing onto normally dry land; “plains fertilized by annual inundations”

fill quickly beyond capacity; as with a liquid; “the basement was inundated after the storm”; “The images flooded his mind”

charge someone with too many tasks

fill or cover completely, usually with water