US coast along the Gulf of Mexico has been suffered damages every year by powerful hurricanes which were generated there. Waves and storm surges by hurricane are a factor of overwash to cause permanent damages, a highway along the Texas coast was closed and it is impossible to live there due to that reason. overwash is found as a main cause by analysis of short and long term field measurements. When we consider that few landfall of hurricane have been made in the study area, long period swells by gigantic hurricane cause overwash along the Northeast Texas coast.