Color me bafflingly stupid as well. I don’t get why this is such an inexplicable question.
Sure, if I were Romney I would have asked it somewhere more private. But if you’re surveying coastal flooding following a hurricane it seems plausible that the flooding could be caused by too much rain for the storm sewer to handle, an ocean storm surge overwhelming a dike, a major river overflowing its banks, or some combination of all of these. What am I missing?