Verb – Swamp
1 : to cover (something) with water
The sea level rose and swamped the coastal villages.
The boat sank after it was swamped by waves.
2 : to cause (someone or something) to have to deal with a very large amount of things or people at the same time — usually used as (be) swamped
The agency has been swamped by requests for assistance.
I’m swamped with work right now. (=I’m extremely busy right now)
Because of the new laws, we were swamped with paperwork.
In the summer, the town is swamped with/by tourists.