How do hood scoops keep out water?

How do hood scoops keep out water? These are just a box in the duct that allows the water to get out of the air stream. They typically have a small drain hole. Any water vapor sucked into the engine will be converted to steam and exhausted thru the combustion process.

These are just a box in the duct that allows the water to get out of the air stream. They typically have a small drain hole. Any water vapor sucked into the engine will be converted to steam and exhausted thru the combustion process.