A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flood Risk Assessment in the Tra Bong River Catchment, Vietnam
Extreme flood events often cause tremendous damage and enormous risks to people, infrastructure and nature worldwide and especially in Vietnam. Therefore, flooding is considered as one of the most costly kinds of natural disasters in this country. Tra Bong is an ungauged river catchment located in Quang Ngai province, Vietnam. Annually, due to the effect of typhoons that originate from the South China Sea, many extreme floods occur in the river system every year. Considering the impacts of severe flooding in the Tra Bong River Catchment plays an important role in mitigating and adapting flood risk. In this paper, the hydrological model MIKE11 NAM and some hydro-dynamic models such as the MIKE 11 HD, MIKE 21 FM, and MIKE Flood models were applied as effective tools to simulate the flooding and inundation in the downstream area of the catchment. These models simulated the high flows accurately by depicting all of the peak flow discharges in accordance with observed high flows. Two flood risk maps for the year of 2009 and the design flood events (100 year return period) were created based on the intersection of hazard and vulnerability maps which were obtained from flood maps, land-use and population density. Accordingly, more than 80% of the total flooded area is at high and very high risk. Almost 35 km2 of the flooded area were at high and very high risk in the year 2009, while, approximately 45.5 km2 would be at high and very high risk in the 100 year return period flood event.
Flood Risk Assessment in the Tra Bong River Catchment, Vietnam
Extreme flood events often cause tremendous damage and enormous risks to people, infrastructure and nature worldwide and especially in Vietnam. Therefore, flooding is considered as one of the most costly kinds of natural disasters in this country. Tra Bong is an ungauged river catchment located in Quang Ngai province, Vietnam. Annually, due to the effect of typhoons that originate from the South China Sea, many extreme floods occur in the river system every year. Considering the impacts of severe flooding in the Tra Bong River Catchment plays an important role in mitigating and adapting flood risk. In this paper, the hydrological model MIKE11 NAM and some hydro-dynamic models such as the MIKE 11 HD, MIKE 21 FM, and MIKE Flood models were applied as effective tools to simulate the flooding and inundation in the downstream area of the catchment. These models simulated the high flows accurately by depicting all of the peak flow discharges in accordance with observed high flows. Two flood risk maps for the year of 2009 and the design flood events (100 year return period) were created based on the intersection of hazard and vulnerability maps which were obtained from flood maps, land-use and population density. Accordingly, more than 80% of the total flooded area is at high and very high risk. Almost 35 km2 of the flooded area were at high and very high risk in the year 2009, while, approximately 45.5 km2 would be at high and very high risk in the 100 year return period flood event.
Flood Risk Assessment in the Tra Bong River Catchment, Vietnam
Springer Water
Gourbesville, Philippe (editor) / Caignaert, Guy (editor) / Trinh Xuan, Manh (author) / Molkenthin, Frank (author)
2020-07-26
18 pages
Article/Chapter (Book)
Electronic Resource
English
Flood Risk Management Modelling in the River Ibar Catchment Area
| Springer Verlag | 2020
Flood risk assessment for the Thach Han River Basin, Quang Tri Province, Vietnam
| British Library Conference Proceedings | 2010
Flood control measures in the River Thames catchment
| British Library Conference Proceedings | 1994