scholarly journals What are Crucial Issues in Promoting an Integrated Approach for Flood Risk Management in Urban Areas?

2016 ◽  
Vol 6 (1) ◽  
pp. 15-26 ◽  
Author(s):  
Mikio ISHIWATARI
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Integrated Approach ◽  
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.

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.

Pluvial flood catastrophe modelling: a trans-disciplinary approach.

2020 ◽  
Author(s):  
Konstantinos Karagiorgos ◽  
Daniel Knos ◽  
Jan Haas ◽  
Sven Halldin ◽  
Barbara Blumenthal ◽  
...  
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Urban Areas ◽  
Insurance Industry ◽  
Integrated Approach ◽  
Effective Prevention ◽  
The Public ◽  
Modelling Framework ◽  
Catastrophe Modelling ◽  
The Impact

<p>Pluvial floods are one of the most significant natural hazards in Europe causing severe damage to urban areas. Following the projected increase in extreme precipitation and the ongoing urbanization, these events play an important role in the ongoing flood risk management discussion and provoke serious risk to the public as well as to the insurance sector. However, this type of flood, remains a poorly documented phenomenon. To address this gap, Swedish Pluvial Modelling Analysis and Safety Handling (SPLASH) project aims to develop new methods and types of data that improve the possibility to value flood risk in Swedish municipalities by collaboration between different disciplines.</p><p>SPLASH project allows to investigating the impact of heavy precipitation along the entire risk modelling chain, ultimate needed for effective prevention. This study presents a pluvial flood catastrophe modelling framework to identify and assess hazard, exposure and vulnerability in urban context. An integrated approach is adopted by incorporating ‘rainfall-damage’ patterns, flood inundation modelling, vulnerability tools and risk management. The project is developed in the ‘OASIS Loss Modelling Framework’ platform, jointly with end-users from the public sector and the insurance industry.</p><p>The Swedish case study indicates that the framework presented can be considered as an important decision making tool, by establishing an area for collaboration between academia; insurance businesses and rescue services, to reduce long-term disaster risk in Sweden.</p>

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 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 Making Birmingham a Flood Resilient City: Challenges and Opportunities

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1699 ◽  
Author(s):  
Taiwo Adedeji ◽  
David Proverbs ◽  
Hong Xiao ◽  
Paul Cobbing ◽  
Victor Oladokun
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Systems Approach ◽  
Integrated Approach ◽  
Flood Risk Management ◽  
Communication Strategy ◽  
Water Flooding ◽  
Physical Damage ◽  
Challenges And Opportunities ◽  
The City

The city of Birmingham has experienced a number of significant flooding events in the past two decades. The impacts of these flood events include physical damage to critical infrastructure, as well as significant losses caused by business interruption and general disruption to communities. Human losses and impacts can be life changing. This study identifies the current challenges and opportunities of managing flood risk in the city of Birmingham, drawing on a desk-based account of current flood risk management (FRM) practice and diagnostic evidence. This interrogation adopts the use of a ‘flood resilience circle model’ to consider ways to address the challenges in a methodological manner aligned to an integrated approach to flood risk management. Solutions aligned to the key FRM stages of prevention, preparation, response and recovery are provided. The findings will be of interest to policy makers and decision makers on how to address current weaknesses in FRM practices towards the prospect of a sustainable approach that improves the resilience of the city and delivers multiple benefits. Recommendations made include the adoption of a blue-green systems approach, the development of a new communication strategy aligned to motivating behaviour change, and improved flood forecasting especially for surface water flooding.

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
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