Imagine you are building your dream house on a lake. To protect your investment from flooding, you hire an engineer to tell you how high up the bank to build your home and design the sea wall.He determines which design wave height to use to protect your home, then takes that wave height and superimposes it on the record high lake level, just to be safe. When you see the results, you are surprised at how high and how expensive your sea wall must be. You are also unhappy at how high the home is above the water, hurting your
