scholarly journals Flood risk inevitability and flood risk management in urban areas: A review

2015 ◽  
Vol 8 (8) ◽  
pp. 205-209 ◽  
Author(s):  
Idris Saidu ◽  
Merving Dharmasiri Lal
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Flood Risk Management

scholarly journals Flood Risk Management Methodology for Lakes and Adjacent Areas: The Lake Pamvotida Paradigm

Proceedings ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 21
Author(s):  
George Papaioannou ◽  
Athanasios Loukas ◽  
Lampros Vasiliades
Keyword(s):  
Risk Management ◽  
Natural Hazards ◽  
Flood Risk ◽  
Urban Areas ◽  
Hydrologic Modeling ◽  
Flood Risk Management ◽  
Flood Inundation ◽  
Hydrodynamic Simulations ◽  
Flood Inundation Modeling ◽  
Inundation Modeling

In recent decades, natural hazards have caused major disasters in natural and man-made environments. Floods are one of the most devasting natural hazards, with high levels of mortality, destruction of infrastructure, and large financial losses. This study presents a methodological approach for flood risk management at lakes and adjacent areas that is based on the implementation of the EU Floods Directive (2007/60/EC) in Greece. Contemporary engineering approaches have been used for the estimation of the inflow hydrographs. The hydraulic–hydrodynamic simulations were implemented in the following order: (a) hydrologic modeling of lake tributaries and estimation flood flow inflow to the lake, (b) flood inundation modeling of lake tributaries, (c) simulation of the lake as a closed system, (d) simulation of the lake outflows to the adjacent areas, and (e) simulation of flood inundation of rural and urban areas adjacent to the lake. The hydrologic modeling was performed using the HEC-HMS model, and the hydraulic-hydrodynamic simulations were implemented with the use of the two-dimensional HEC-RAS model. The simulations were applied to three soil moisture conditions (dry, medium and wet) and three return periods (T = 50, T = 100 and T = 1000 years) and a methodology was followed for the flood inundation modeling in urban areas. Upper and lower estimates on water depths, flow velocities and inundation areas are estimated for all inflow hydrographs and for varying roughness coefficient values. The proposed methodology presents the necessary steps and the results for the assessment of flood risk management and mapping for lake and adjacent urban and rural areas. The methodology was applied to Lake Pamvotida in Epirus, Greece, Ioannina.

scholarly journals A rainfall design method for spatial flood risk assessment: considering multiple flood sources

2015 ◽  
Vol 12 (8) ◽  
pp. 8005-8033 ◽  
Author(s):  
X. Jiang ◽  
H. Tatano
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Design Method ◽  
Coastal Flooding ◽  
Flood Risk Management ◽  
Flood Risk Assessment ◽  
River Channels ◽  
Critical Rainfall

Abstract. Information about the spatial distribution of flood risk is important for integrated urban flood risk management. Focusing on urban areas, spatial flood risk assessment must reflect all risk information derived from multiple flood sources: rivers, drainage, coastal flooding etc. that may affect the area. However, conventional flood risk assessment deals with each flood source independently, which leads to an underestimation of flood risk in the floodplain. Even in floodplains that have no risk from coastal flooding, flooding from river channels and inundation caused by insufficient drainage capacity should be considered simultaneously. For integrated flood risk management, it is necessary to establish a methodology to estimate flood risk distribution across a floodplain. In this paper, a rainfall design method for spatial flood risk assessment, which considers the joint effects of multiple flood sources, is proposed. The concept of critical rainfall duration determined by the concentration time of flooding is introduced to connect response characteristics of different flood sources with rainfall. A copula method is then adopted to capture the correlation of rainfall amount with different critical rainfall durations. Rainfall events are designed taking advantage of the copula structure of correlation and marginal distribution of rainfall amounts within different critical rainfall durations. A case study in the Otsu River Basin, Osaka prefecture, Japan was conducted to demonstrate this methodology.

scholarly journals Improvement of resilience of urban areas by integrating social perception in flash-flood risk management

2016 ◽  
Vol 541 ◽  
pp. 665-676 ◽  
Author(s):  
J.M. Bodoque ◽  
M. Amérigo ◽  
A. Díez-Herrero ◽  
J.A. García ◽  
B. Cortés ◽  
...  
Keyword(s):  
Risk Management ◽  
Social Perception ◽  
Flood Risk ◽  
Urban Areas ◽  
Flash Flood ◽  
Flood Risk Management

scholarly journals Attribution of flood risk in urban areas

2008 ◽  
Vol 10 (4) ◽  
pp. 275-288 ◽  
Author(s):  
R. J. Dawson ◽  
L. Speight ◽  
J. W. Hall ◽  
S. Djordjevic ◽  
D. Savic ◽  
...  
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Management Strategies ◽  
Flood Risk Management ◽  
Urban Systems ◽  
Total Risk ◽  
Urban Flood ◽  
Management Actions ◽  
Risk Attribution

Flooding in urban areas represents a particular challenge to modellers and flood risk managers because of the complex interactions of surface and sewer flows. Quantified flood risk estimates provide a common metric that can be used to compare risks from different sources. In situations where there are several organisations responsible for flood risk management we wish to be able to disaggregate the total risk and attribute it to different components in the system and/or agents with responsibility for risk reduction in order to target management actions. Two approaches to risk attribution are discussed: Standards-based attribution, which is a deterministic approach, based upon the performance of different engineering components in the system at their “design standard”. Sensitivity-based attribution, which apportions risk between the variables that influence the total flood risk. Whilst both these approaches are feasible for the small system considered here, in practice urban flooding systems involve tens of thousands of variables. The only feasible approach to tackling this problem for large urban systems is therefore by hierarchical simplification of the system, with the attribution analysis being applied in several tiers of detail. In this paper, the applicability of a hierarchical approach is demonstrated in the context of sewer pipe blockages. The results demonstrate the potential of attribution methods to support the development of integrated urban flood risk management strategies, as they can identify the forcing variables and infrastructure components that have the most influence upon flood risk.

Flood risk management for the riverside urban areas of Hanoi

2010 ◽  
Vol 19 (1) ◽  
pp. 103-118 ◽  
Author(s):  
Hoang Vinh Hung ◽  
Rajib Shaw ◽  
Masami Kobayashi
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Flood Risk Management

scholarly journals The value of integrating information from multiple hazards for flood risk analysis and management

2014 ◽  
Vol 14 (2) ◽  
pp. 379-400 ◽  
Author(s):  
J. T. Castillo-Rodríguez ◽  
I. Escuder-Bueno ◽  
L. Altarejos-García ◽  
A. Serrano-Lombillo
Keyword(s):  
Risk Management ◽  
Risk Analysis ◽  
Flood Risk ◽  
Urban Areas ◽  
National Level ◽  
Flood Risk Management ◽  
Dam Failure ◽  
Flood Hazards ◽  
River Flooding ◽  
Flood Risk Analysis

Abstract. This article presents a methodology for estimating flood risk in urban areas integrating pluvial flooding, river flooding and failure of both small and large dams. The first part includes a review of basic concepts on flood risk analysis, evaluation and management. Flood risk analyses may be developed at local, regional and national level, however a general methodology to perform a quantitative flood risk analysis including different flood hazards is still required. The second part describes the proposed methodology, which presents an integrated approach – combining pluvial, river flooding and flooding from dam failure, as applied to a case study: an urban area located downstream of a dam under construction. The methodology enhances the approach developed within the SUFRI project ("Sustainable Strategies of Urban Flood Risk Management to cope with the residual risk", 2009–2011). This article also shows how outcomes from flood risk analysis provide better and more complete information to inform authorities, local entities and the stakeholders involved in decision-making with regard to flood risk management.

scholarly journals The value of integrating information from multiple hazards for flood risk management

2013 ◽  
Vol 1 (4) ◽  
pp. 3305-3371
Author(s):  
J. T. Castillo-Rodríguez ◽  
I. Escuder-Bueno ◽  
L. Altarejos-García ◽  
A. Serrano-Lombillo
Keyword(s):  
Risk Management ◽  
Risk Analysis ◽  
Flood Risk ◽  
Urban Areas ◽  
Integrated Approach ◽  
Flood Risk Management ◽  
Dam Failure ◽  
Flood Hazards ◽  
River Flooding ◽  
Flood Risk Analysis

Abstract. This article presents a methodology for estimating flood risk in urban areas integrating pluvial flooding, river flooding and failure of both small and large dams. The first part includes a review of basic concepts and existing methods on flood risk analysis, evaluation and management. Traditionally, flood risk analyses have focused on specific site studies and qualitative or semi-quantitative approaches. However, in this context, a general methodology to perform a quantitative flood risk analysis including different flood hazards was still required. The second part describes the proposed methodology, which presents an integrated approach – combining pluvial, river flooding and dam failure, as applied to a case study: a urban area located downstream a dam under construction. Such methodology represents an upgrade of the methodological piece developed within the SUFRI project. This article shows how outcomes from flood risk analysis provide better and more complete information to inform authorities, local entities and the stakeholders involved on decision-making with regard to flood risk management.

The Issues and Challenges of Flood-related Agencies in Malaysia

2020 ◽  
Vol 5 (13) ◽  
pp. 285-290
Author(s):  
Nurul Ashikin Mabahwi ◽  
Hitoshi Nakamura
Keyword(s):  
Risk Management ◽  
Thematic Analysis ◽  
Flood Risk ◽  
Publishing House ◽  
Flood Risk Management ◽  
Communication Problems ◽  
Qualitative Thematic Analysis ◽  
International Publishing ◽  
The Government ◽  
Open Access Article

Objectives of this study is to identify the real issues and challenges of flood related agencies in Malaysia. By using qualitative thematic analysis, this study found that limited authorities, lack of enforcement power, lack of cooperation among agencies, lack of man-power and assets for logistics, insufficient funding for flood risk management and communication problems are the issues faced by the flood-related agencies. The government needs to solve the issues and challenges in order to strengthen the flood-related agencies capacities.Keywords: flood risk management; flood-related agencies; issues; authorityeISSN: 2398-4287 © 2020. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia.DOI: https://doi.org/10.21834/e-bpj.v5i13.2069

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