{"title":"Precise assessment of flood risk and accurate allocation of disaster relief funds through a fuzzy set approach","authors":"Yudong Wang, Xida Yu, Lanjia Yi, Yun Chen, Qi Ao, Wenjun Shi, Lingyun Huang","doi":"10.1111/jfr3.13025","DOIUrl":"10.1111/jfr3.13025","url":null,"abstract":"<p>The traditional flood hazard assessment system for emergency departments is based on the average hazard index of administrative regions. However, this approach may overlook errors with significant hazards caused by the transition from watershed hazard maps to administrative hazard maps. In our study, we propose an innovative approach that utilizes fuzzy sets to represent flood risk grades, incorporating the upper and lower boundaries of membership variety to effectively indicate higher and lower risks errors, respectively. The introduction of fuzzy set risk grades not only incorporates conventional information but also addresses local risk errors caused by the conversion, enabling Emergency Departments to allocate disaster prevention funds accurately for all risk spots. The fund allocation coefficient, based on fuzzy risk grades, strongly correlates with the proportion of flood-affected populations over time, highlighting the robustness of utilizing fuzzy set risk grades.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141926056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wej's Table of Contents","authors":"","doi":"10.1111/jfr3.12927","DOIUrl":"https://doi.org/10.1111/jfr3.12927","url":null,"abstract":"","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.12927","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Researching and managing flooding in the urban context","authors":"Sally Priest","doi":"10.1111/jfr3.13023","DOIUrl":"10.1111/jfr3.13023","url":null,"abstract":"<p>When I began my academic career around 25 years ago much of the focus of the research focussed on understanding risk in quite a narrow set of flood circumstances, namely large inland rivers, high coastal risks and, to some extent, rapid onset flood events. Focus on more traditional floodplain events dominated considerations of flood risk and was, in part, reflective of the management priorities and technical abilities of the time. Considerations of food production and managing the areas where risk to life was highest dominated the discourse of flood risk management and academics studying it.</p><p>I have been privileged to observe the evolution of flood risk research and the acknowledgement that the other types of flooding are important and can have equally devastating impacts on individuals and communities. The flood risk research community has evolved to pioneer consideration of a much wider range of flood types, and this Journal has been at the forefront of these advancements. As well as continuing to improve knowledge and insight into many aspects of the ‘traditional’ flood types mentioned above: fluvial and coastal; <i>The Journal of Flood Risk Management</i> now regularly publishes (and welcomes) research into other types of risk such as groundwater or surface water flooding (e.g., see amongst others Allocca et al., <span>2022</span>; Birch et al., <span>2021</span>; Fathy et al., <span>2021</span>), which have become more mainstream within the flood risk research community. In this editorial, I specifically want to reflect on the concept of urban flood risk management, which continues to emerge as an important area of flood research and draw attention to several contributions to the current issue of this Journal (Volume 17, Issue 3, June 2024), which have focussed on urban flood risk.</p><p>Whilst all flood risk is complex, considerations of urban flood risk raise particular challenges. Urban areas often have rapidly changing physical and social environments, with higher population densities, more mobile, diverse and less cohesive communities. There is often a complex interplay between the natural and built environment, which impacts upon how easy it is to understand and model urban flood risk. For instance, the built environment may display complicated flood routing patterns and interaction with drainage solutions. Many areas display a lack of maintenance of storm sewers and SUDS, which although are suggested as solutions may ultimately limit the ability to prevent flooding in an urban catchment. Finally, management options may be limited by factors such as the lack of space, the legacy of past interventions, and challenges with flood forecasting and prediction, particularly when considering the potential impact of climate change on rainfall intensity.</p><p>This Issue offers valuable insights into the understanding, assessment and/or management of flood risk in the urban context. Darnkachatarn and Kajitani (<span>2024</span>) in their","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 3","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141926938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Davide Wüthrich, Paul A. Korswagen, Harish Selvam, Jan Oetjen, Jeremy Bricker, Holger Schüttrumpf
{"title":"Field survey assessment of flood loads and related building damage from the July 2021 event in the Ahr Valley (Germany)","authors":"Davide Wüthrich, Paul A. Korswagen, Harish Selvam, Jan Oetjen, Jeremy Bricker, Holger Schüttrumpf","doi":"10.1111/jfr3.13024","DOIUrl":"https://doi.org/10.1111/jfr3.13024","url":null,"abstract":"<p>The July 2021 flood heavily affected many inhabitants, buildings and critical infrastructure throughout Germany, Belgium and the Netherlands. Specifically, the Ahr Valley (Germany) showcased the destructive power associated with these extreme events. Hence, this region was the focus of a field survey, aiming at describing the flood-induced damage to buildings and assessing the possible underlying processes that led to structural failures. The field assessment revealed a close connection between building failures and (1) local flow depths and velocities, (2) building location, (3) distance from the riverbank and (4) construction type. Although it is difficult to identify the exact causes that induced failures, the detailed assessment revealed that damages mainly originated from local scour and hydraulic loads, often unevenly distributed around buildings. Importantly, many buildings were significantly affected by (large) floating debris impacts and damming, both responsible for additional loads, highlighting their importance in flood-resistant building design. Furthermore, data showed that buildings near the riverbanks and in the upstream part of villages were more severely damaged. Altogether, data provide a better understanding of the flood processes that lead to building failures, fostering future research towards the development of safer protection measures and more effective flood risk management strategies.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"18 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kate Sherren, H. M. T. Rahman, Patricia Manuel, Emily Wells, Eric Rapaport, Danika van Proosdij
{"title":"Reimagining nature-based coastal adaptation: A nested framework","authors":"Kate Sherren, H. M. T. Rahman, Patricia Manuel, Emily Wells, Eric Rapaport, Danika van Proosdij","doi":"10.1111/jfr3.13026","DOIUrl":"https://doi.org/10.1111/jfr3.13026","url":null,"abstract":"<p>Nature-based coastal adaptation is a subset of nature-based solutions that has to this point focused on the materiality of managing coastal risks: what our coastal protections are made of or where we put things that are in the way of harm. In our collaborative interdisciplinary work, we have been reimagining nature-based coastal adaptation to start with first principles: how we think about the coast and what makes a good coastal life. In a nature-based approach our shared sense of what is good and possible, also known as the social imaginary, needs shifting before any physical material. This paper presents a new nested framework for thinking about nature-based coastal adaptation using five words starting with R: Reimagine, Reserve, Relocate, Restore, Reinforce. We use the nature-based adaptation option of managed dyke realignment in Bay of Fundy agricultural dykelands to illustrate the utility of the framework in practice but assert its more generic applicability.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hongxin Luo, Zhiqiang Lin, Haimeng Chen, Dixiang Xiao, Gong Chen, Dongsheng Su
{"title":"Assessments of multiple precipitation products and application in hydrodynamic simulations: A case of casualty-inducing mountain torrents in Sichuan, Southwest China","authors":"Hongxin Luo, Zhiqiang Lin, Haimeng Chen, Dixiang Xiao, Gong Chen, Dongsheng Su","doi":"10.1111/jfr3.13016","DOIUrl":"10.1111/jfr3.13016","url":null,"abstract":"<p>Mountain torrents are frequent and severe hazards, causing serious economic losses and personnel casualties, and in particular, they are the most dangerous threat in the complex terrain. Multi-source precipitation products should be used to drive the hydrological models to improve understanding of the processes of mountain torrents. Fifteen sets of precipitation products are evaluated against the ground observations in situ within a serious mountain torrent caused by a severe rainstorm at June 26, 2020 in Sichuan. The multi-source merged precipitation products performed better than the others. Satellite-based precipitation performed better than model-based products, while IMERG-Early and FY2G performed better than other satellite-based precipitation products. The reanalysis datasets are relatively worse than the observed products. The operational NWPs strongly underestimated precipitation in the mountainous areas. Furthermore, the related floods caused by the rainstorm is simulated based on various precipitation products by a raster-based hydrodynamic two-dimensional model of FloodArea. Most observation-based precipitation products represented the flooding area well, while the model-based precipitation products underestimated the severity of the mountain torrents. Finally, the risk of mountain torrents under variant return-period rainfall is analyzed. The result shows the potential of real-time torrent monitoring and forecasting using high-resolution DEM and precipitation products.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Advancing justice in flood risk management: Leveling political capabilities","authors":"Lieke Brackel, Udo Pesch, Neelke Doorn","doi":"10.1111/jfr3.13019","DOIUrl":"10.1111/jfr3.13019","url":null,"abstract":"<p>Land use change, managed retreat, and relocation programs are examples of exposure reduction measures in flood risk management (FRM). Exposure reduction measures are especially prone to conflict at the local level due to competing interests, values, and attachments. In this paper, we build upon the capability approach to justice and specifically the concept of political capabilities to advance justice in exposure reduction measures in FRM. A capabilities-based approach to justice helps to recognize the multiplicity of valuable ways of life and addresses a wide range of inequalities including concerns related to recognition justice. The innovation of our capabilities-based approach to justice is that we include both actors who have too little political influence as well as those who have too much and can thus excessively steer FRM in their advantage. A political capabilities analysis is different than a focus on principles or rights because it draws attention to realized political influence and includes the informal stages of FRM politics such as lobbying. The political capabilities concept also shifts the focus from vulnerability to human agency, thereby addressing concerns in the FRM literature about the loss of self-determination and misrecognition. The paper concludes with a critical discussion of the opportunities and limitations of using the political capabilities concept in FRM.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"18 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The permanent flood risk of culverts and the impact of increasing debris blockage","authors":"Luke Fallowfield, Davide Motta","doi":"10.1111/jfr3.13021","DOIUrl":"https://doi.org/10.1111/jfr3.13021","url":null,"abstract":"<p>Hydraulic modelling of culverts relating to the flood risk posed by debris in watercourses has previously only assessed the impact of fixed culvert blockage levels, without analysing the change in flooding as blockage levels increase. With increasing flow rates in rivers during flood events, there is concern that existing culverts may be undersized and therefore already posing a substantial flood risk regardless of them becoming blocked by debris. In this article, two-dimensional (2D) flood modelling is used to produce flood maps detailing the change in flood area and property flooding as culverts become increasingly blocked at several sites in the Northwest of England. The results show a clear distinction between sites where the accumulation of blockage is the key contributing factor towards local flood risk, and sites where the presence of the culvert itself is the predominant flood risk factor. The blockage induced flood risk metric is introduced to characterise the contribution of culvert blockage to the overall flood risk.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Madoche Jean Louis, Alessandra Crosato, Erik Mosselman, Shreedhar Maskey
{"title":"Effects of urbanization and deforestation on flooding: Case study of Cap-Haïtien City, Haiti","authors":"Madoche Jean Louis, Alessandra Crosato, Erik Mosselman, Shreedhar Maskey","doi":"10.1111/jfr3.13020","DOIUrl":"https://doi.org/10.1111/jfr3.13020","url":null,"abstract":"<p>Cap-Haïtien, the second largest city in Haiti, is highly vulnerable to earthquakes, landslides, and flooding. The rapid pace of urbanization and deforestation has exacerbated the risk of flooding, resulting in disasters in November 2012, 2016, and 2022. This study aims to assess the impact of urbanization and deforestation on river flooding in Cap-Haïtien by applying the hydrological model Soil Water Assessment Tool (SWAT) and the hydrodynamic model Sobek-Rural. We examined the current situation and a scenario of future urbanization and deforestation. Urbanization and deforestation are found to play a pivotal role in the production and deposition of sediment along the lower Haut-du-Cap River reaches. The existing hydraulic capacity of the river and its drainage system cannot handle the estimated peak flows. The mountain ravines west of the city are found to be the primary source of sediment-laden flash floods. We recommend retention basins, drainage extensions, and pragmatic public policies to mitigate flood risk. Comprehensive strategies are needed to address the detrimental effects of urbanization and deforestation on flooding in Cap-Haïtien and similar regions where a lack of water governance has worsened the flooding alongside urbanization and deforestation. We generalize our experiences from Cap-Haïtien into a broader framework for data-scarce areas.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assimilating water level observations with the ensemble optimal interpolation scheme into a rainfall-runoff-inundation model: A repository-based dynamic covariance matrix generation approach","authors":"Manoj Khaniya, Yasuto Tachikawa, Takahiro Sayama","doi":"10.1111/jfr3.13017","DOIUrl":"https://doi.org/10.1111/jfr3.13017","url":null,"abstract":"<p>Although conceptually attractive, the use of ensemble data assimilation methods, such as the ensemble Kalman filter (EnKF), can be constrained by intensive computational requirements. In such cases, the ensemble optimal interpolation scheme (EnOI), which works on a single model run instead of ensemble evolution, may offer a sub-optimal alternative. This study explores different approaches of dynamic covariance matrix generation from predefined state vector repositories for assimilating synthetic water level observations with the EnOI scheme into a distributed rainfall-runoff-inundation model. Repositories are first created by storing open loop state vectors from the simulation of past flood events. The vectors are later sampled during the assimilation step, based on their closeness to the model forecast (calculated using vector norm). Results suggest that the dynamic EnOI scheme is inferior to the EnKF, but can improve upon the deterministic simulation depending on the sampling approach and the repository used. Observations can also be used for sampling to increase the background spread when the system noise is large. A richer repository is required to reduce analysis degradation, but increases the computation cost. This can be resolved by using a sliced repository consisting of only the vectors with norm close to the model forecast.</p>","PeriodicalId":49294,"journal":{"name":"Journal of Flood Risk Management","volume":"17 4","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfr3.13017","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}