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Global and Regional Flood Risk Modelling and Analysis in Climate Change Scenario

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Urban Water Management".

Deadline for manuscript submissions: closed (31 December 2024) | Viewed by 2084

Special Issue Editor


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Guest Editor
Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Naples, Italy
Interests: rainfall; critical events; flood risk management
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Special Issue Information

Dear Colleagues,

In recent years, climate change and urbanization have led to significant pluvial flood events in a range of countries worldwide. This has prompted the development and implementation of effective and innovative approaches for designing and managing urban stormwater systems. The gradual urbanization process is causing an increase in impervious surfaces, resulting in higher surface runoff and velocity. This, in turn, reduces concentration times of watersheds, leading to increased soil erosion and deteriorating water quality due to intensive contamination.

Low-impact development (LID) practices for controlling urban runoff can be considered an effective approach to addressing this concern. These practices aim to enhance urban resilience against flooding risks and ensure environmental interventions that address the changing climate and land use patterns. This Special Issue invites research contributions that present groundbreaking advancements in both experimental and modeling research on LIDs. We encourage the submission of articles on various LID-related topics, including decision support systems (DDS) for the optimal design of LIDs in urban sub catchments, case studies evaluating the effectiveness of low-impact development strategies, simulation of LID practices, and the calibration of parameters for modeling LID practices. 

Prof. Dr. Francesco De Paola
Guest Editor

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Keywords

  • urban stormwater systems
  • sustainable stormwater management
  • low-impact development (LID)
  • conventional measurement
  • SWMM5.1
  • meta-heuristic models
  • decision support system

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Published Papers (2 papers)

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Research

22 pages, 12361 KiB  
Article
Understanding Public Perception and Preparedness for Flood Risks in Greece
by Nada Joumar, Cleo M. Gaganis, Polina N. Tourlioti, Ioannis Pantelakis, Ourania Tzoraki, Lahcen Benaabidate, Jamal Eddine Stitou El Messari and Petros Gaganis
Water 2025, 17(5), 764; https://doi.org/10.3390/w17050764 - 6 Mar 2025
Viewed by 184
Abstract
The present study examines perceptions and preparedness for flooding in Greece, a country increasingly impacted by natural hazards, particularly due to the effects of climate change. Despite the frequent occurrence of floods, public preparedness remains insufficient in many areas. Through a survey of [...] Read more.
The present study examines perceptions and preparedness for flooding in Greece, a country increasingly impacted by natural hazards, particularly due to the effects of climate change. Despite the frequent occurrence of floods, public preparedness remains insufficient in many areas. Through a survey of 1282 respondents from various regions of Greece and using R statistical software to process and analyse data, the research explores the relationship between individual flood risk perceptions, prior experiences, and household-level preparedness. The findings show most participants are aware of governmental flood plans, but a significant gap exists between perceived flood risks and actual preparedness, especially regarding insurance and relocation willingness. The findings reveal that a majority of participants are aware of governmental flood management plans; however, outcomes concerning flood insurance and the willingness to relocate highlight the significant gap between perceived flood risks and actual preparedness efforts. Many respondents expressed dissatisfaction with current measures to address flood risks, leading to a diminished trust in the respective authorities. To enhance public awareness and engagement in flood preparedness, the study underscores the importance of localized risk communication strategies tailored to different demographic groups. Given the observed gap between awareness and actual preparedness, efforts should focus on bridging this disconnect through practical, community-driven initiatives. Recommendations include implementing targeted awareness campaigns, promoting trust in government efforts through transparent policies, and providing financial incentives such as subsidized flood insurance to encourage protective actions, and, additionally, fostering community involvement in disaster risk management, particularly in historically flood-prone regions, to strengthen the resilience against future flooding events. Full article
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26 pages, 5249 KiB  
Article
Designing Effective Low-Impact Developments for a Changing Climate: A HYDRUS-Based Vadose Zone Modeling Approach
by Satbir Guram and Rashid Bashir
Water 2024, 16(13), 1803; https://doi.org/10.3390/w16131803 - 26 Jun 2024
Viewed by 1283
Abstract
Low-Impact Developments (LIDs), like green roofs and bioretention cells, are vital for managing stormwater and reducing pollution. Amidst climate change, assessing both current and future LID systems is crucial. This study utilizes variably saturated flow modeling with the HYDRUS software (version 4.17) to [...] Read more.
Low-Impact Developments (LIDs), like green roofs and bioretention cells, are vital for managing stormwater and reducing pollution. Amidst climate change, assessing both current and future LID systems is crucial. This study utilizes variably saturated flow modeling with the HYDRUS software (version 4.17) to analyze ten locations in Ontario, Canada, focusing on Toronto. Historical and projected climate data are used in flow modeling to assess long-term impacts. Future predicted storms, representing extreme precipitation events, derived from a regional climate model, were also used in the flow modeling. This enabled a comprehensive evaluation of LID performance under an evolving climate. A robust methodology is developed to analyze LID designs, exploring parameters like water inflow volumes, peak intensity, time delays, runoff dynamics, and ponding patterns. The findings indicate potential declines in LID performance attributed to rising water volumes, resulting in notable changes in infiltration for green roofs (100%) and bioretention facilities (50%) compared to historical conditions. Future climate predicted storms indicate reduced peak reductions and shorter time delays for green roofs, posing risks of flooding and erosion. Anticipated extreme precipitation is projected to increase ponding depths in bioretention facilities, resulting in untreated stormwater overflow and prolonged ponding times exceeding baseline conditions by up to 13 h at numerous Ontario locations. Full article
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