As natural sand spit stretching south-west to north-east across the entrance to the Exe estuary in Devon, Dawlish has played a very important role in protecting the West Country railway line and other places from being attacked by the strong sea wave and flooding (Environment Agency, 2015). According to Environment Agency (2015), since the narrow part of Dawlish Warren stands at a greater risk of being breached by strong sea waves and rising sea level, the breaching would lead to the flooding of the railway line and other coastal communities such as Starcross. Therefore, the Dawlish coastal engineering scheme plays a vital role in preventing those estuary communities and the railway line from being affected or damaged by the sea waves and floods.