Simulating past severe flood events to evaluate the effectiveness of nonstructural flood countermeasures in the upper Chao Phraya River Basin, Thailand
| Autor: | Yuji Toda, Sarawut Jamrussri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Flood myth Land use 0208 environmental biotechnology lcsh:QE1-996.5 Drainage basin Reforestation 02 engineering and technology Numerical models Flood inundation analysis Master plan Upper Chao Phraya River Basin 020801 environmental engineering Water resources lcsh:Geology Nonstructural flood countermeasure Scenarios analysis Earth and Planetary Sciences (miscellaneous) Flash flood lcsh:GB3-5030 lcsh:Physical geography Water Science and Technology |
| Zdroj: | Journal of Hydrology: Regional Studies, Vol 10, Iss C, Pp 82-94 (2017) |
| ISSN: | 2214-5818 |
| Popis: | Floods devastate communities and result in large economic losses in the lower reaches of the Chao Phraya River Basin, Thailand. The aim of this study was to determine whether nonstructural flood countermeasures would help prevent flash floods in the upstream area of the Upper Chao Phraya River Basin, and control the volume of floodwaters reaching the downstream area. Numerical models were used to quantify the effects of nonstructural measures, namely land use regulation, reforestation, and retention areas, and to examine how efficient these proposed nonstructural approaches would have been during the severe flood events that occurred in 1995, 2006 and 2011. Three scenarios, reforestation, retention areas, and the combination of reforestation and retention areas, were developed for these nonstructural flood countermeasures, as outlined in the Thai Master Plan for Water Resources Management. Their effectiveness in the Upper Chao Phraya River Basin was quantitatively assessed by comparing the model results for the actual conditions with the scenario results. Results showed that the proposed nonstructural measures had considerable potential to reduce peak discharges and flood volumes in the Upper Chao Phraya River Basin. Integration of these proposed nonstructural flood countermeasures with the existing countermeasures in the Chao Phraya River Basin may be the most practical way to cope with the challenges of future flood disasters. |
| Databáze: | OpenAIRE |
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