I read a scientific article about this 30+ years ago. The flood did not create the Med, the Med dried up over many millenia when the strait at Gibralter closed. They know it dried up because of the salt domes found at the bottom of the Med which only form as a salty body of water dries up. When the blockage at the strait broke open again it would have created a waterfall so large that its roar would have been heard for hundreds of miles. It did not refill immediately, it refilled to level over a longer period of time.
Suppose the same thing happened w/ Lake Erie ? There are salt mines under the lake...