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"

1st Protection

Outer Ring Dike with height +6.0m.above mean sea level

2nd Protection

Inner Ring Highway with height +4.5m.above mean sea level

3rd Protection

Rojana's self-protective dlike with height +6.05m.above mean sea level