Its impossible - imagine the basement is the hold of a ship with holes below the water line the size of doors. You'd need a jet to pump the required water. Th

Its impossible - imagine the basement is the hold of a ship with holes below the water line the size of doors. You'd need a jet to pump the required water. The only technical "solution" would be to build a barrier higher than the flood waters around the apartments, but thats not going to happen.