The north of the Suez canal is 10ft higher than the south why doesnt the Med. drain out into the Red Sea?

Question

there are no locks to stop the flow of the worlds largest open sewer into the Red Sea

Answer 1

are you sure about that? i think all interconnected seas and oceans are at the same level. sea level is constant all around the world.

Answer 2

At the end of the 18th century, Napoleon Bonaparte, while in Egypt, contemplated the construction of a canal to join the Mediterranean and Red Seas. His project was abandoned, however, after a French survey erroneously concluded that the waters of the Red Sea were higher than those of the Mediterranean, making a lockless canal impossible.

Now we know both ends are at the same level.