Evaluation of flood risk reduction strategies through combinations of interventions

Berchum, Erik C. van; Mobley, William H.; Jonkman, Sebastiaan N.; Timmermans, Jos; Kwakkel, Jan H.; Brody, Samuel D.

doi:10.1111/jfr3.12506

Cited by 22 publications

(16 citation statements)

References 33 publications

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“…The reason for this is that flood mitigation is currently underdeveloped and requires a balanced mix of cost-effective spatial planning actions. Finding cost-effective spatial planning measures is difficult since flood defences act as a 'front door' which make any investments in the area behind this front door redundant [48,49]. In the current frame of FRM, clear added benefits first need to be identified to gain political support for these investments, which seems difficult.…”

Section: Discussionmentioning

confidence: 99%

Adaptive Capacities for Diversified Flood Risk Management Strategies: Learning from Pilot Projects

Cosoveanu

Buijs

Bakker

et al. 2019

Water

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Diversification of flood risk management strategies (FRMS) in response to climate change relies on the adaptive capacities of institutions. Although adaptive capacities enable flexibility and adjustment, more empirical research is needed to better grasp the role of adaptive capacities to accommodate expected climate change effects. This paper presents an analytical framework based on the Adaptive Capacity Wheel (ACW) and Triple-loop Learning. The framework is applied to evaluate the adaptive capacities that were missing, employed, and developed throughout the ‘Alblasserwaard-Vijfheerenlanden’ (The Netherlands) and the ‘Wesermarsch’ (Germany) pilot projects. Evaluations were performed using questionnaires, interviews, and focus groups. From the 22 capacities of ACW, three capacities were identified important for diversifying the current FRMS; the capacity to develop a greater variety of solutions, continuous access to information about diversified FRMS, and collaborative leadership. Hardly any capacities related to ‘learning’ and ‘governance’ were mentioned by the stakeholders. From a further reflection on the data, we inferred that the pilot projects performed single-loop learning (incremental learning: ‘are we doing what we do right?’), rather than double-loop learning (reframing: ‘are we doing the right things?’). As the development of the framework is part of ongoing research, some directions for improvement are highlighted.

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Section: Discussionmentioning

confidence: 99%

Adaptive Capacities for Diversified Flood Risk Management Strategies: Learning from Pilot Projects

Cosoveanu

Buijs

Bakker

et al. 2019

Water

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“…The schematization of the storm surge is based on van Berchum et al (2018). The borders between land and water are schematized as line elements that separate the outside water from the drainage basins inside.…”

Section: Flood Event Simulation Modelmentioning

confidence: 99%

“…This type of curve shows the expected portion of value damaged by a certain inundation. More information on this can be found in van Berchum et al (2018).…”

Section: Flood Event Simulation Modelmentioning

confidence: 99%

Rapid flood risk screening model for compound flood events in Beira, Mozambique

Berchum¹,

Ledden²,

Timmermans³

et al. 2020

Preprint

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Abstract. Coastal cities combine intensive socio-economic activity and investments with high exposure to flood hazards. Developing effective strategies to manage flood risk in coastal cities is often a costly and complicated process. In the design of these strategies, engineers rely on computationally demanding flood simulation models and only compare a few strategies due to computational constraints. This limits the efficacy of standard flood simulation models in the crucial conceptual phase of flood risk management. This paper presents the Flood Risk Reduction Evaluation and Screening (FLORES)-model, which specifically aims to provide useful risk information early on in the planning process. FLORES performs numerous quick simulations and compares the impact of many storms, strategies, and future scenarios. This article presents the screening model and demonstrates its merits in a case study for Beira, Mozambique. Our results demonstrate that expansion of the drainage capacity and strengthening of its coastal protection in the southwest, are crucial components of any effective flood risk management strategy for Beira.

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“…An alternative to identifying the Pareto front is to bound scenarios based on looser objectives and these characteristics are often based on catastrophic consequences [21], but they can also be used to identify more ideal characteristics [22]. A common method for identifying these scenarios is to use a Patient Rule Induction Method (PRIM) analysis [23].…”

Section: Introductionmentioning

confidence: 99%

Uncertainty in Flood Mitigation Practices: Assessing the Economic Benefits of Property Acquisition and Elevation in Flood-Prone Communities

2020

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Adopting effective flood mitigation practices for repetitive flood events in the United States continues to play a prominent role in preventing future damage and fostering resilience to residential flooding. Two common mitigation practices for reducing residential flood risk consist of raising an existing structure to or above base flood elevation (BFE) and acquiring chronically damaged properties in flood prone areas and restoring them back to serve their natural functions as green open spaces. However, due to data accuracy limitations, decision makers are faced with the challenge of identifying the financially optimal approach to implementing mitigation measures. We address this problem through the following research questions: What does the optimal allocation of flood mitigation resources look like under data uncertainty, and what are the optimal methods to combining mitigation measures with consideration for the best economic benefits? Using a robust decision making (RDM) approach, the effects of uncertainty in property values, construction and demolition costs, and policy implementation options such as structure selection and budget allocation were measured. Our results indicate that the amount budgeted for mitigation and how those funds are allocated directly influence the selection of the most economically viable mitigation practices. Our research also contributes to the growing need for evaluating specific flood mitigation strategies.

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Evaluation of flood risk reduction strategies through combinations of interventions

Cited by 22 publications

References 33 publications

Adaptive Capacities for Diversified Flood Risk Management Strategies: Learning from Pilot Projects

Adaptive Capacities for Diversified Flood Risk Management Strategies: Learning from Pilot Projects

Rapid flood risk screening model for compound flood events in Beira, Mozambique

Uncertainty in Flood Mitigation Practices: Assessing the Economic Benefits of Property Acquisition and Elevation in Flood-Prone Communities

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