To die from suffocation while immersed in water or other fluid.
To kill by suffocating in water or another liquid.
To be flooded: to be inundated with or submerged in (literally) water or (figuratively) other things; to be overwhelmed.
To inundate, submerge, overwhelm.
(usually passive) To obscure, particularly amid an overwhelming volume of other items.
The answers intelligence services seek are often drowned in the flood of information they can now gather.
An instance of a person or animal drowning.
It's dangerous to swim in that river — there were three drownings there last year.