Article from the Houston Chronicle about the National Hurricane Center's Storm Surge Modeling Software. With Ike on the way, it shows storm surge effects on Houston area with Category 3 storm, and how different the results are depending upon a slight change in landfall point. Pay particular attention to the difference in storm surge in Galveston Bay if the storm goes ashore in the middle of Galveston Island as opposed to going ashore at the eastern end of Galveston Island--a distance of less than 10 miles. I was amazed.
Link to Article
Link to Article