One reason for the suitability of Talinpu for the project in spite of coastal erosion, is that the sea bed just offshore is fairly even, sloping to a depth of about 30 meters three kilometers out.
大林蒲雖屬侵蝕性海岸，但海底坡度平緩，離岸三公里處水深才約卅公尺，適合填海造陸。