Hydrodynamic Modelling of Floods and Estimating Socio-economic Impacts of Floods in Ugandan River Malaba Sub-catchment
نویسندگان
چکیده
Abstract River Malaba sub-catchment tends to experience dramatic flooding events, with several socio-economic impacts the nearby communities, such as loss of lives and destructions physical infrastructure. Analysis spatiotemporal extents which settlements, crops infrastructures tend be inundated are vital for predictive planning risk-based adaptation measures. This paper presents a case study on flood risk assessment Ugandan sub-catchment. We applied two-dimensional Hydraulic Engineering Center’s System (2D HEC-RAS) modelling extents. considered extreme flow quantiles, lower upper quantiles corresponding 95% confidence interval limits aimed at determining uncertainties in Spatial inundation human settlement, land cover infrastructure were analysed respect return periods quantiles. Finally, we estimated economic due flooding. Results from 2D HEC-RAS model satisfactorily comparable results observations. Amongst use types, cropland exhibited highest vulnerability least 10,234.8 hectare (ha) susceptible event 100-year period (YRP). Inundated built-up land-use percentage increase (90%) between 2- 100-YRP. In US Dollar, about US$ 33 million 39 losses 100-YRP, respectively, rice gardens these indicate looming high household food insecurity poverty. Several including 15 academic institutions, 12 health facilities, 32 worshiping places remain annually vulnerable At 6 km 7 road network also under flows 2 100 years, respectively. Churches 855,065 1,623,832 2-YRP findings relevant development sustainable pathways given established within
منابع مشابه
Detailed 2D flow simulations as an onset for evaluating socio-economic impacts of floods
A 2D hydraulic numerical model is presented. It is based on the fully dynamic shallow-water equations, solved by means of a finite volume scheme on multiblock structured grids. The model handles highly accurate DSM derived from airborne laser altimetry for the floodplains and sonar detection for the bathymetry of the main channel. The flow simulations are performed with a typical grid spacing o...
متن کاملMathematical modelling of morphological changes and hyperconcentrated floods in the Yellow River Mathematical modelling of morphological changes and hyperconcentrated floods in the Yellow River
(CSC) " , " Het Lamminga Fonds " , and the Sino-Dutch collaboration project " Effects of human activities on the eco-morphological evolution of rivers and estuaries " (08-PSA-E-01) funded by the Royal Dutch Academy of Sciences (KNAW) and the Chinese Ministry of Science and Technology (MOST) within the framework of the Programme of Scientific Alliances between China and the Netherlands. Summary ...
متن کاملA Concise History of Dutch River Floods
Based on a brief account of 1,000 years of river floods and flood management in the Dutch Rhine delta, it is argued that vulnerability to river floods depends on the complex interaction of economics, institutions, politics and, to a limited extent, climate. Response functions and thresholds for climate change impacts should take this complexity into account rather than assuming society to be co...
متن کاملTransboundary River Floods and Institutional Capacity
While transboundary flood events have become more frequent on a global scale the past two decades, they appear to be overlooked in the international river basin (IRB) cooperation and management arena. The present study therefore combined geopolitical measures with biophysical and socioeconomic variables in an attempt to identify the IRBs with adequate institutional capacity for management of tr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Earth systems and environment
سال: 2022
ISSN: ['2509-9426', '2509-9434']
DOI: https://doi.org/10.1007/s41748-021-00283-w