AASR-2015-6-9-53-78.pdf (3.46 MB)
Impact analysis of flood in Accra, Ghana
journal contribution
posted on 2016-05-15, 21:48 authored by Samuel Asumadu SarkodieSamuel Asumadu Sarkodie, Phebe Asantewaa OwusuPhebe Asantewaa Owusu, Patrick RufanguraWithin the past decades, flooding has become a global pandemic, which hampers economic and social development.
This global phenomenon has led to loss of lives and economic damages in many countries including Ghana. On
June 3rd 2015, Accra, Ghana's capital experienced an unprecedented flash flood event, coupled with an explosion
at a Goil filling station that resulted in a death toll of over 152 lives. It is therefore necessary to explore new ideas
and approaches that can be incorporated to existing structures to manage this problem. The aim of this study is to
analyse the underlying causes of flood in Accra, examine the suitable structural measures that can be undertaken to
mitigate flood impacts in Accra, and propose a mitigation approach to manage flood impacts using Integrated
Flood Risk Management and Sustainable Flood Management. The Intensity of rainfall events in eight drainage
basins in Accra namely; Kpeshie, Korle, Densu, Sakumo, Lafa, Osu, Songo Mokwe and Chemu triggers flash floods
due to a short response time and high specific peak discharges. Precipitation patterns in Accra have changed
considerably within this few decades. According to IPCC scenario B1, A1B, and A2 forecasting, there will be an
increase in the average monthly precipitation from 160 mm in 1991-2010 to 200 mm in 2011-2020 respectively. A
ten (10) year flood protection level was employed to model the rate of urban damage, estimate affected Gross
Domestic Product (GDP) and the population at risk in Accra.
History
Usage metrics
Categories
Keywords
flood risk managementsustainable flood managementprecipitationflood protectionGhanawater management systemWater Management Techniqueswater management strategieswater management scenarioswater management planningOA Week 2016Water Quality EngineeringWater Resources EngineeringWater Treatment Processes
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC