swamp

low land that is seasonally flooded; has more woody plants than a marsh and better drainage than a bog

a situation fraught with difficulties and imponderables; "he was trapped in a medical swamp"

drench or submerge or be drenched or submerged; "The tsunami swamped every boat in the harbor"

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