Rapid Assessment for Resilient Recovery and ... - GFDRR

Technical Reconstruction Recommendations
Rehabilitate hydraulic assets and increase the drainage capacity in order to restore
and improve flood control structures to a safe operating standard, in line with the Royal
Initiative for Flood Management. In conjunction, systems should be established to ensure
regular review of the critical flood control infrastructure status, both by the operator and by
independent review panels, to examine problems relating to sustainable operations and
maintenance.
Undertake a design review of critical flood embankments such as the King’s Dike in
Bangkok, and the Ring Dike around the industrial parks (Figure 6), drainage canals and
pumping stations in order to strengthen the structures from 1/50 year to 1/100 year flood
structures. This will require new modeling of hydrological and river morphological analyses
and design reviews.
Carry out dam safety reviews for the three large dams, including updating the reservoir
operations and maintenance procedures. In order to ensure the utmost in public safety,
dams should be systematically analyzed using an internationally accepted method of dam
Portfolio Risk Assessment.
Engage a panel of local and international flood experts to: 1) conduct an analysis of
the 2011 floods to establish an understanding of the likelihood of a similar event occurring
in the future, and highlight lessons learnt, and 2) provide recommendations to the recently
established Strategic Committee on Water Management regarding preparedness measures
that would allow Thailand to effectively manage extreme flood events in the future.
During the review, particular attention should be given to the collapse of dikes – particularly
around the Ayuthaya industrial estates – in order to learn lessons on how to improve
the quality of such flood defense works in the future.
Strengthen the flood forecasting and early warning systems that would refocus the
system on monitoring and hydraulic modeling that incorporates climate change models,
and is based on hazard mapping that focus on the entire basins in line with recommendations
on establishing the river basin model 83 . A clear decision support system for reservoir
operations would need to be built into the operational framework.
Accelerate the implementation of the Royal Initiative for Flood Management which
provides a framework for water resources and flood risk management.
Update and implement the Integrated Plan for Flood Mitigation in the Chao Phraya
River Basin.
Invest in floodwater management systems such as small and medium reservoirs, providing
space to rivers, and community watershed management programs.
83 Please see the DRM recommendations for linkages and coordination with other possible hazard mapping activities.
THAI FLOOD 2011 RAPID ASSESSMENT FOR RESILIENT RECOVERY AND RECONSTRUCTION PLANNING
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