Flood Risk Assessment of Climate Change Adaptations in Taipei City
Land use change due to the population growth and urban development causes the impact on urban drainage water infrastructure. As a result, the severe flooding events happened in the recent years. The traditional structural measures are difficult to reconstruct in the existed urban area. Urban floods endanger the people of casualties and causing serious property losses. Therefore, the other flood measure using adaptation strategies of risk assessment in urban area becomes an important issue. In this way, a series of alternative plans were studied and compared by the flood risk assessment to get suitable prevention and adaptation in order to reduce the impact of disasters. In this paper, the adaptations for climate change are green roofs and detention ponds installation which can reduce the peak discharge and delay time occurring storm water runoff. The 2D inundation model is employed to calculate water depth in cases of the adaptation and climate change. Furthermore, the flood risk assessment of the Taipei city of the A1B scenario for climate change by Intergovernmental Panel Change is simulated.
Keywords- Climate change, adaptation, green roofs, risk assessment