A multi-faceted analysis of annual flood incidences in Kumasi, Ghana

Amoateng, Paul; Finlayson, C. Max; Howard, Jonathon; Wilson, Ben

doi:10.1016/j.ijdrr.2017.09.044

Cited by 52 publications

(16 citation statements)

References 13 publications

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“…According to Ngwese, Saito, Sato, Boafo, and Jasaw (2018) and Frick‐Trzebitzky, Baghel, and Bruns (2017), the lack of science‐based tools and systems for FRM in Ghana instigates the development of creative strategies for dealing with floods. Nevertheless, some studies pointed out that the majority of the flood victims still opt for reactive and reactionary coping and adaptation strategies rather than preventive ones, which are usually costly and sometimes ineffective (Amoateng et al, 2018; Danso & Addo, 2017). Amoako et al (2019) further described that FRM in Ghana has been largely limited because of weak urban planning.…”

Section: Findings Of the State‐of‐the‐art Review Of Frm Studies In Ghanamentioning

confidence: 99%

“…Ghana is one of the countries most prone to floods in West Africa (Aggrey, 2015; Amoateng, Finlayson, Howard, & Wilson, 2018; World Bank, 2011) with devastating effects, especially for the urban poor (Okyere, Yacouba, & Gilgenbach, 2013). In 2017, Ghana experienced extreme floods that affected about 1 million people (Adegoke et al, 2019; IFRC, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Current flood risk management practices in Ghana: Gaps and opportunities for improving resilience

Almoradie

Brito

Evers

et al. 2020

J Flood Risk Management

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This article evaluates the current gaps and describes opportunities for improving flood risk management (FRM) in Ghana, West Africa. A mixed-method participatory approach comprising questionnaires, workshops, interviews with key stakeholders, and a systematic literature review were employed. Existing problems, discourses, FRM practices, and opportunities to enhance flood resilience were identified. They provided the basis for outlining potential research directions into ways of tracking these challenges. The results show how different actors perceive FRM in Ghana. The stakeholders interviewed have different, and even contradictory perceptions of the effectiveness of FRM, which are embedded in their diverse storylines. The findings show that Ghana's FRM is still reactive rather than preventive and that research in the field of quantitative hazard and risk assessment is still rudimentary. FRM policies and flood early warning systems (FEWS) are in place, but efforts should be directed towards their implementation and monitoring, investigation of social and technical capacity aspects, and enhancement of institutions' mandates, and coordination. Moreover, the findings illustrate that FRM is moving toward a more constructive engagement of citizens and stakeholders. However, policies and action plans need to consider more inclusive community participation in planning and management to effectively improve their resilience and develop sustainable solutions.

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Section: Findings Of the State‐of‐the‐art Review Of Frm Studies In Ghanamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current flood risk management practices in Ghana: Gaps and opportunities for improving resilience

Almoradie

Brito

Evers

et al. 2020

J Flood Risk Management

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show abstract

“…Conventional structural methods used to prevent flooding, such as longitudinal dikes, are often partly ineffective during catastrophic events because, aside from reducing the supply of ecosystem services, they affect the consequences of the problem, not its causes [9]. Strengthening dikes by increasing their height or reinforcement is not a sustainable long-term solution, because it confines flow to the river channel and therefore increases the drainage velocity of water into the hydrographic basin.…”

Section: Discussionmentioning

confidence: 99%

“…For the renaturalization of floodplains to efficiently control floods, the different types of flooding in natural and artificial areas must be controlled, compatible land uses must be considered, and objectives must be integrated to optimize water interactions between the channel and the floodplain [9]. This will allow the flow to be managed in renaturalized areas during floods, and thereby reduce the risk of flooding downstream.…”

Section: Discussionmentioning

confidence: 99%

Renaturalizing Floodplains

Baptista¹,

Valcarcel²

2018

JWARP

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This manuscript analyzes and discusses viewpoints concerning the renaturalization of floodplains as an instrument of management in large catchments, using natural flood defense schemes. Schemes consider the differentiated supply of ecosystemic services based on river channel/floodplain interactions. Conventional structural methods used to prevent flooding (e.g., longitudinal dikes) are increasingly showing themselves to be less efficient with regard to advances in the problems of environmental management of the territory, especially when combined with extreme events, where the importance of perfecting strategies for harmonizing duly controlled floodable areas and water retention can be seen. Natural flood risk reduction measures are part of a holistic solution for sustainable management of flood risk, conservation of nature, water quality and green economy. They rely upon the inherent ability of floodplains to retain water in the basin, and this can delay and reduce peak flows.

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“…Floods are particularly catastrophic in urban areas, where the magnitude of these changes is highly pronounced, thereby affecting the prosperity and safety of people (Amoateng, Finlayson, Howard, & Wilson, ). Risks associated with urban floods stem from the combination of probability of occurrence and potential consequences.…”

Section: Introductionmentioning

confidence: 99%

Urban flood risk mapping using an optimised additive weighting methodology based on open data

Jato-Espino

Lobo

Ascorbe-Salcedo

2019

J Flood Risk Management

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Floods are one of the most common and harmful natural disasters worldwide, especially in cities, due to the high concentration of people and goods in these areas.This research aims to provide an accessible and accurate means to model risks associated with floods in urban spaces using open data about a series of susceptibility and impact contributing factors. Hence, a methodology combining geoprocessing tools, additive weighting, dependence measures, and optimisation was designed to generate spatial information, aggregating the factors according to their weights and optimising the modelling of their relationships to flood risk, respectively. The application of the proposed approach to the city of Santander (Spain) yielded a flood risk map providing an accurate assessment of the ranking of flood zones reported by its City Council. The results suggested that flood mitigation might focus on the implementation of permeable pavements, due to their ease of integration in urban environments. K E Y W O R D S additive weighting, contributing factors, open data, optimisation, risk assessment, urban flooding

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A multi-faceted analysis of annual flood incidences in Kumasi, Ghana

Cited by 52 publications

References 13 publications

Current flood risk management practices in Ghana: Gaps and opportunities for improving resilience

Current flood risk management practices in Ghana: Gaps and opportunities for improving resilience

Renaturalizing Floodplains

Urban flood risk mapping using an optimised additive weighting methodology based on open data

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