A better example would be where a "development" community's rain water goes. The areas booming right now in the south east usa will build the next development u

A better example would be where a "development" community's rain water goes. The areas booming right now in the south east usa will build the next development up 4 feet above the previous community and get approved through the county council permit process. Then the first big rain storm or hurricane comes by and the formerly dry community is now flooded out for the new community that got built, which also floods because drainage wasn't factored in.