There is an interesting report from the US Embassy in Thailand about dikes as a solution to sea level rise
On February 1, ESTHoff, Staff and US Embassy Science Fellow went to a well-attended presentation, "Is Bangkok Sinking?" that summarized Bangkok's subsidence history, the need for more research on cause and effect scenarios with climate change in SE Asia coastal regions, the need for a regional approach for adaptation and mitigation strategies already considered to contend with conservative future flooding scenarios, education of the general population in Bangkok to fuel political will to address the problem proactively.
Dutch Professor Cor Dijkgraaf advocated a the building of a dike based on Netherland model designs in the Bay of Thailand to contain flood waters and protect the city from climate change sea level rise and storm or tsunami surges. Similar dike strategies are being considered in United States (New Orleans), South Korea, Vietnam, Indonesia and Bangladesh. Environmental consequences were mentioned as a concern but not addressed directly. Other technological concerns such as positive pumping of wastewater for treatment outside the city, mangrove reforestation to protect coastlines and technology to reverse subsidence and increase holding capacity in groundwater reserves were mentioned as interests by the audience but not directly addressed by the panel as viable long term strategies.
Comment: For Thailand, the proposed location of this dike could turn the northern portion of the Gulf of Thailand into a freshwater lake, encompassing the important tourist resorts of Hua Hin and Pattaya. Shrimp and other fisheries would be devastated and commercial shipping affected if not strangled. The billions of dollars price tag would significantly divert resources from other infrastructure priorities. BMA officials noted that the dike is only one scenario under consideration but other ideas are few. This is where the USGS expertise could play a significant role in educating the Thai how diking actions have had counterproductive effects in the U.S. New Orleans and the Mississippi Delta, with its extensive rice agriculture, are arguably more analogous to the Chao Praya Delta than it is to the Netherlands, upon which the diking plan is based. End Comment.