Refugees of 1937 Ohio River Valley flood

Cincinnati was unexpectedly hit by a flood, with water levels surpassing 65 feet. This led to the inundation of thousands of homes and the evacuation of over half a million people.

What city was taken by surprise during the flood?

What was the unexpected height of the waters during the flood?

What was the estimated limit of the water height before the flood exceeded it?

How many homes were affected by the deluge?

What action was taken for the half million people affected by the flood?