FLOOD MITIGATION STRATEGIES IN UBON RATCHATHANI AND SISAKET PROVINCES: A STUDY USING MIKE FLOOD MODELLING
DOI:
https://doi.org/10.55766/sujst-2024-06-e05583Keywords:
Flood mitigation, MIKE FLOOD, Structural measurement, Non-Structural measurementAbstract
The provinces of Ubon Ratchathani and Sisaket experienced severe flood events in 1938, 1978, 2002, and notably in 2019, when widespread flooding occurred in late August. A comprehensive study using MIKE FLOOD medelling was conducted to consider the causes of flooding in these areas and explore potential flood prevention measures. The results highlighted the crucial role of changes in upstream water discharge in triggering extensive flooding. It was found that water inflow from the upstream basin was a primary factor contributing to major flood incidents in both provinces. The study demonstrated that river dredging could reduce flood-prone areas in Sisaket by 52.38%, while its impact in Ubon Ratchathani was predicted to be minimal. The diversion of water from the upstream basin could reduce flooded areas by a minimum of 43.81% to a maximum of 49.83%, showing that strategic water diversion could contribute to flood mitigation efforts. Moreover, eight runoff stations within the upper basin of the study area were also found to be vital for effective flood warning systems. Effective flood mitigation in the area requires a combination of upstream water flow management, strategic dredging, and robust flood warning systems. The insights gained from this study can inform future flood prevention and management strategies to reduce the vulnerability of these regions to destructive flood events.
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