"inundation of" is correct and usable in written English.
It is used to describe a large or overwhelming amount of something. For example: "The inundation of emails from the marketing team was overwhelming."
The most important mystery of ancient Egypt concerned the annual inundation of the Nile floodplain.
I am slowly climbing out of the inundation of 2012 like the Swamp Thing.
A short time later, the Lady arrived to an inundation of white and red roses and tumultuous cheers.
And one hopes the Brooklyn inundation of Australian art and artists will whet Americans' appetites for future installments.
The gestures have been heartfelt and welcome, but the inundation of gifts has not been free of complication.
The provincial governor said he was powerless to stop the inundation of what he called "a second Pompeii".
Writing each of the characters was like struggling through an inundation of images, dialogue, details and memories.
In that year a major cyclone resulted in thousands of deaths and the inundation of numerous salt mines in India.
The warning center had said that "significant widespread inundation of land is expected," adding that dangerous coastal flooding was possible.
"Again, we believe that the explosion was caused by a massive inundation of methane-rich natural gas".
The inundation of most of the fields during the rainy season makes it necessary to build houses on higher ground.
