Factual error: In the scene inside Karen's house, the water level rises way too fast. The house is not in an isolated pool of water, but connected to the entire city. So for the water level to rise several meters inside the house would mean that the water rose several meters in the entire city. And that could not happen that fast. If it was a wave from the lake, the water level would drop again.
Jacob La Cour
22nd Jan 2010