scholarly journals Flood hazard: planning approach to risk mitigation

2013 ◽  
Author(s):  
F. D. Moccia ◽  
A. Sgobbo
Keyword(s):  
Risk Mitigation ◽  
Flood Hazard ◽  
Planning Approach

Strategic Disaster Management

2021 ◽  
pp. 310-329
Author(s):  
Erhan Korkın ◽  
Fatma Neval Genç
Keyword(s):  
Sustainable Development ◽  
Disaster Management ◽  
Risk Mitigation ◽  
Disaster Policy ◽  
Strategic Plans ◽  
Emergency Event ◽  
Planning Approach ◽  
Management And Development ◽  
Multi Stakeholder ◽  
The Relationship

In this study, by considering the relationship between disaster management and sustainable development in general, disaster management is handled with strategic management and planning approach and its roles in sustainable development are emphasized. Besides literature search, the study primarily focused on disaster management, then, through the example of Turkey, disaster management and development of disaster policy were evaluated on the basis of sustainability and strategic planning. In addition, it was emphasized that for Turkey and other countries alike, disaster management should not only be considered as an emergency event, but it should also be handled in the national strategic plans and targets with a multi-stakeholder, governance approach that includes all dimensions such as risk mitigation, intervention, improvement and reconstruction. For this purpose, it is planned to include suggestions on how common development and cooperation models should be on a national and international scale.

scholarly journals Multipurpose Use of Artificial Channel Networks for Flood Risk Reduction: The Case of the Waterway Padova–Venice (Italy)

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1609 ◽  
Author(s):  
Riccardo Alvise Mel ◽  
Daniele Pietro Viero ◽  
Luca Carniello ◽  
Luigi D’Alpaos
Keyword(s):  
Flood Risk ◽  
Risk Mitigation ◽  
Flood Hazard ◽  
Road Transport ◽  
Venice Lagoon ◽  
Computationally Efficient ◽  
Channel Networks ◽  
Control Structures ◽  
Pump Stations ◽  
And Control

Many rivers are increasingly threatened by extreme floods, and effective strategies for flood risk mitigation are difficult to pursue, especially in highly urbanized areas. A flexible and multipurpose use of the complex networks of artificial channels that typically cross these regions can play a role in flood risk mitigation. A relevant example concerns the possible completion of a waterway from Padova to the Venice Lagoon, in North-Eastern Italy. Once completed, the waterway can boost shipping (which is considerably more climate and environment friendly than road transport), can lead to a urban re-composition of the territory and, serving as a diversion canal for the Brenta River, can reduce hydraulic hazard as well. The goal of the present work was to assess this last point. To this purpose, the 2DEF hydrodynamic model was used to reproduce the complex Brenta–Bacchiglione river network. This network includes river reaches, diversion canals, bed sills, pump stations, and control structures that assures the proper operation of the system in case of flood events. The mixed Eulerian–Lagrangian, semi-implicit formulation of the model provided accurate and computationally efficient results for subcritical regimes. The model results showed that the waterway can divert a significant part of the Brenta floodwaters toward the Venice Lagoon, thus reducing flood hazard in the Brenta River downstream of Padova. The benefits also extend to the Bacchiglione River, whose floodwaters can be diverted into the Brenta River through an existing flood canal; indeed, the waterway withdrawal produces a drawdown profile in the Brenta River that allows diverting larger flow rates from the Bacchiglione River as well. Finally, by conveying the sediment-laden floodwaters of the Brenta River within the Venice Lagoon, the waterway could contribute to counteract the generalized erosion affecting the lagoon.

scholarly journals FLOOD HISTORY ANALYSIS AND ITS CONTRIBUTION TO FLOOD HAZARD ASSESSMENT. THE CASE OF MARATHONAS, GREECE

2017 ◽  
Vol 43 (3) ◽  
pp. 1323 ◽  
Author(s):  
M. Diakakis
Keyword(s):  
Risk Mitigation ◽  
Flood Hazard ◽  
Mitigation Strategy ◽  
Flood Events ◽  
The Past ◽  
Documentary Sources ◽  
History Analysis ◽  
The Press ◽  
Realistic Assessment ◽  
Systematic Data Collection

Flood history analysis contributes decisively to a more realistic assessment of flood hazard. In this work, systematic data collection on past flood events in Marathonas area (Attica, Greece) together with the development of a database, allowed the thorough study of flooding phenomena and their evolution over time. The study area consists of three dominant catchments with rich flooding history, namely Rapentosa, Charadros and Kato Souli. Information gathered from governmental and insurance organizations, emergency agencies, the press, field interviews and other documentary sources, along with geomorphologic and geologic evidence, were stored, structured and analyzed in a GIS platform and were used to reconstruct flood events with detail. Valuable results were produced concerning the causes, the characteristics, the spatial distribution of damages and the extent of inundation for each event. Moreover, the rate of recurrence of flooding phenomena was calculated across the floodplain, so that the areas of higher risk were identified and delineated. The active part of the floodplain was outlined and its migration overtime was studied. Furthermore, the methodology underlined the imperfections of the existing risk mitigation strategy and the past emergency experiences were appraised in a way that they highlight the priorities and will help improve management of future situations of risk.

Do hazard maps mirror loss data? – A vulnerability assessment based on loss data and hazard maps

2020 ◽  
Author(s):  
Mirjam Mertin ◽  
Mattia Brughelli ◽  
Andreas Zischg ◽  
Veronika Röthlisberger ◽  
Matthias Schlögl ◽  
...  
Keyword(s):  
Flood Risk ◽  
Risk Mitigation ◽  
Flood Hazard ◽  
Flood Damage ◽  
Hazard Maps ◽  
Protection Measures ◽  
Essential Information ◽  
Flood Loss ◽  
Loss Data ◽  
First Results

<p>Implementing effective flood risk strategies is an essential task for policy-makers which will gain in importance as flood losses are expected to increase due to socio-economic and climatic drivers in near future. Flood risk mitigation incorporates structural and non-structural measures such as the declaration of flood hazard zones, both of which are associated with high financial expenses. Essential information to ensure maximum effectiveness and cost efficiency of flood protection measures is provided by quantitative flood loss analyses based, for example, on data from insurance claims.</p><p>This project aims to model the expected flood damage, thus the vulnerability to buildings by examining country-wide, empirical flood loss data of Switzerland of the past 35 years. The developed method includes several steps: First, the loss data are statistically analysed, second the spatial distribution of the loss data in the different hazard zones is assessed and third, vulnerability models for each hazard zone are developed including further parameters such as building values or building zones. A further objective is to provide an overview of possible methods which differ in complexity and data requirement and can be adapted for other applications outside of Switzerland. First results show that the extent of loss increases as the degree of hazard rises. In contrast, however, the number of damage events is highest in flood zones with a lower degree of hazard. Further possibilities how risk adaptation strategies can be supported or complemented by flood loss data are presented within this project.</p>

scholarly journals Towards dynamics in flood risk assessment

2012 ◽  
Vol 12 (11) ◽  
pp. 3571-3587 ◽  
Author(s):  
B. Mazzorana ◽  
L. Levaggi ◽  
M. Keiler ◽  
S. Fuchs
Keyword(s):  
Risk Assessment ◽  
Flood Risk ◽  
Planning Process ◽  
Cost Benefit Analysis ◽  
Risk Mitigation ◽  
Flood Hazard ◽  
Mitigation Strategies ◽  
Flood Risk Assessment ◽  
Mountain Areas ◽  
Flood Impacts

Abstract. As a consequence of flood impacts, communities inhabiting mountain areas are increasingly affected by considerable damage to infrastructure and property. The design of effective flood risk mitigation strategies and their subsequent implementation is crucial for a sustainable development in mountain areas. The assessment of the dynamic evolution of flood risk is the pillar of any subsequent planning process that is targeted at a reduction of the expected adverse consequences of the hazard impact. Given these premises, firstly, a comprehensive method to derive flood hazard process scenarios for well-defined areas at risk is presented. Secondly, conceptualisations of a static and dynamic flood risk assessment are provided. These are based on formal schemes to compute the risk mitigation performance of devised mitigation strategies within the framework of economic cost-benefit analysis. In this context, techniques suitable to quantify the expected losses induced by the identified flood impacts are provided.

scholarly journals Review article: A review and critical analysis of the efforts towards urban flood risk management in the Lagos region of Nigeria

2016 ◽  
Vol 16 (2) ◽  
pp. 349-369 ◽  
Author(s):  
U. C. Nkwunonwo ◽  
M. Whitworth ◽  
B. Baily
Keyword(s):  
Risk Management ◽  
Flood Risk ◽  
Risk Mitigation ◽  
Flood Hazard ◽  
Flood Management ◽  
Flood Damage ◽  
Flood Risk Management ◽  
Management Policy ◽  
Urban Flooding ◽  
Urban Flood

Abstract. Urban flooding has been and will continue to be a significant problem for many cities across the developed and developing world. Crucial to the amelioration of the effects of these floods is the need to formulate a sound flood management policy, which is driven by knowledge of the frequency and magnitude of impacts of these floods. Within the area of flood research, attempts are being made to gain a better understanding of the causes, impacts, and pattern of urban flooding. According to the United Nations office for disaster reduction (UNISDR), flood risk is conceptualized on the basis of three integral components which are frequently adopted during flood damage estimation. These components are: probability of flood hazard, the level of exposure, and vulnerabilities of elements at risk. Reducing the severity of each of these components is the objective of flood risk management under the UNISDR guideline and idea of “living with floods”. On the basis of this framework, the present research reviews flood risk within the Lagos area of Nigeria over the period 1968–2012. During this period, floods have caused harm to millions of people physically, emotionally, and economically. Arguably over this period the efforts of stakeholders to address the challenges appear to have been limited by, amongst other things, a lack of reliable data, a lack of awareness amongst the population affected, and a lack of knowledge of flood risk mitigation. It is the aim of this research to assess the current understanding of flood risk and management in Lagos and to offer recommendations towards future guidance.

scholarly journals Debris flood hazard documentation and mitigation on the Tilcara alluvial fan (Quebrada de Humahuaca, Jujuy province, North-West Argentina)

2012 ◽  
Vol 12 (6) ◽  
pp. 1873-1882 ◽  
Author(s):  
G. Marcato ◽  
G. Bossi ◽  
F. Rivelli ◽  
L. Borgatti
Keyword(s):  
Risk Mitigation ◽  
Flood Hazard ◽  
Rio Grande ◽  
Tourism Industry ◽  
Alluvial Fan ◽  
Mitigation Strategies ◽  
Mitigation Measures ◽  
North West ◽  
Hazard And Risk ◽  
Debris Flood

Abstract. For some decades, mass wasting processes such as landslides and debris floods have been threatening villages and transportation routes in the Rio Grande Valley, named Quebrada de Humauhuaca. One of the most significant examples is the urban area of Tilcara, built on a large alluvial fan. In recent years, debris flood phenomena have been triggered in the tributary valley of the Huasamayo Stream and reached the alluvial fan on a decadal basis. In view of proper development of the area, hazard and risk assessment together with risk mitigation strategies are of paramount importance. The need is urgent also because the Quebrada de Humahuaca was recently included in the UNESCO World Cultural Heritage. Therefore, the growing tourism industry may lead to uncontrolled exploitation and urbanization of the valley, with a consequent increase of the vulnerability of the elements exposed to risk. In this context, structural and non structural mitigation measures not only have to be based on the understanding of natural processes, but also have to consider environmental and sociological factors that could hinder the effectiveness of the countermeasure works. The hydrogeological processes are described with reference to present-day hazard and risk conditions. Considering the socio-economic context, some possible interventions are outlined, which encompass budget constraints and local practices. One viable solution would be to build a protecting dam upstream of the fan apex and an artificial channel, in order to divert the floodwaters in a gully that would then convey water and sediments into the Rio Grande, some kilometers downstream of Tilcara. The proposed remedial measures should employ easily available and relatively cheap technologies and local workers, incorporating low environmental and visual impacts issues, in order to ensure both the future conservation of the site and its safe exploitation for inhabitants and tourists.

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