The current river draft restriction is at the sea entrance, which currently allows between 4.5 meters during the dry season and 5.5 meters during the rainy season. The vessel with the length of 100 meters can navigate during the dry season, and vessels with the length of 120 meters can navigate during the rainy season. At Tsubasa Bridge (Neak Loeurng), the vessel with the air draft below 37.5 meters is accessible below the bridge.
