Well.... based on the concept that is given in this article, it would seem that the Earth should already be completely flooded due to the volume of water that flows down the rivers and INTO THE SEA.
That doesn't normally happen because there is a balance between the water flowing into the sea and the amount evaporating from the sea.
But if all the ice currently in the world started to melt faster than it could be regenerated, then there would be more water going into the oceans than was coming out.