Rojana build a Flood Protection at +6.04 m MSL, by using the most severe case based on 100 years return period + climate change for 2111 = +5.54 m MSL) + freeboard of 0.50 m. (JICA advised).
"Triple flood protection system"
Outer Ring Dike with height +6.0m.above mean sea level
Inner Ring Highway with height +4.5m.above mean sea level
Rojana's self-protective dlike with height +6.05m.above mean sea level