Author comment: Nature-based solutions for floods AND droughts AND biodiversity: Do we have sufficient proof of their functioning? — R0/PR1 DOI Creative Commons
Ellis Penning

Published: March 17, 2023

Climate change and human-modified landscapes have led to an increase in global flood drought risks, while biodiversity has declined. The concept of using nature-based solutions (NbS) improve the water retention capacity at landscape scale, also known as 'sponge functioning catchments,' been recognised help reduce delay peak flows stimulate infiltration groundwater, thus reducing risks. Although various effects NbS demonstrated, there is limited evaluation combined multiple benefits for risk reduction, biodiversity. To address this gap, we analysed online databases on additional literature evaluated NbS. We found that quantitative fragmented not standard practice many projects. successfully implemented reported different environments globally, most cases lack evidence their response impacts floods, droughts, Therefore, propose four components facilitate planning, design, implementation, monitoring sponge floods droughts. First, suggest increased understanding how affects hydrological processes both events along full range potential conditions. Second, recommend evaluating effect measures a scale. Third, integrated modelling upscaling techniques should be improved quantify Finally, consistent socially relevant set indicators evaluate communicate with stakeholders. In conclusion, our analysis demonstrates need more comprehensive standardised NbS, particularly relation

Language: Английский

Watch and Upgrade or Deconstruct and Relocate: Derna Catastrophe Lessons Amid the Climate-change Era of Unpredictable Flash Floods DOI Creative Commons

Abdelwanees Ashoor,

Ahmed Eladawy

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 17, 2024

Abstract Water structures' resilience to accelerated global warming impacts is attracting increased attention. Adaptation unprecedented flash floods in semi-arid regions (e.g., Middle East and North Africa (MENA)) becoming more challenging under the huge uncertainty of their frequency intensity, lack accurate hydrological studies, water-resilient cities' absence these wadi systems. Ten twenty percent Derna's population (∼90,000 people) were reported dead missing along with than 35,000 residents having been displaced (also, 737 completely collapsed, 2859 partially collapsed houses) following two destruction waves after two-dams failures during storm Daniel on 11th September 2023. In this study, we deeply investigated causes consequences significant main dam (i.e., Bu Mansour) breach. We started by discussing history dams region Derna flood protection system design background. Then, rebuilt most probable scenarios simulated break analysis validated ground truthing methods. No matter how well-maintained was, highly exceeded its capacity. Aside from widely poor maintenance, our investigation overflow shafts raised a potentially fatal issue dam. concluded dynamics dams' failure through confirmed diverse field observations. Ironically, study that similar induced could leave much less damage case any far maximum depth velocity occurrence fewer flooded areas). Hence, there an urgent need reassess dams’ criteria, upgrade, or simply deconstruct existing aging -including those small annual storage-to-design capacity ratios- relocating infrastructure away low-lying areas, all aimed at safeguarding human lives ungauged

Language: Английский

Citations

5
Navigating catastrophe: lessons from Derna amid intensified flash floods in the Anthropocene DOI

Abdelwanees Ashoor,

Ahmed Eladawy

Euro-Mediterranean Journal for Environmental Integration, Journal Year: 2024, Volume and Issue: 9(3), P. 1125 - 1140

Published: June 12, 2024

Language: Английский

Citations

4
Lessons learned: comparing the importance and performance of flood adaptation strategies in resource-limited regions: an analysis of Malawi DOI

Atupele George Msongole,

Blessings Isaac Kanyangale,

Chun-Hung Lee

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 3, 2025

Abstract In recent years, the world has witnessed an increased frequency of natural hazards, including floods. Despite advancements in flood prediction, managing such hazards requires a renewed focus on Community-Based Disaster Management (CBDM), which emphasizes participatory approaches that leverage local insights. This study, conducted Malawi's Karonga and Nkhotakota districts, employed Factor Analysis, Cluster Importance-Performance Analysis (IPA) to evaluate CBDM strategies stakeholder dynamics adaptive capacity initiatives. (i) It assesses categorizes various stakeholders based their perceptions attitudes toward programs. (ii) Investigates stakeholders' views regarding diverse implemented within framework context responses. (iii) Explores critical factors can promote sustained engagement flash disaster management efforts. The findings indicate significant weaknesses essential strategies, as providing construction loans promoting dyke building, alongside ineffective information-sharing mechanisms. Disturbingly, use early warning systems education shown negative trends, highlighting issues deployment. contrast, communities with historically low CBDM—along participants who are open resource sharing, influenced by policies, actively engaged risk awareness, environmental mitigation, Nature-Based Solutions—demonstrated significantly higher levels positive engagement. Additionally, partnerships governmental non-governmental organizations proved vital for enhancing involvement improving outcomes. study recommends tailored contexts strengthen developing regions facing challenges.

Language: Английский

Citations

0
Leaky Dams as Nature-Based Solutions in Flood Management Part I: Introduction and Comparative Efficacy with Conventional Flood Control Infrastructure DOI Creative Commons

Umanda Hansamali,

Randika K. Makumbura, Upaka Rathnayake

et al.

Hydrology, Journal Year: 2025, Volume and Issue: 12(4), P. 95 - 95

Published: April 17, 2025

Natural flood management strategies are increasingly recognized as sustainable alternatives to conventional engineered control measures. Among these, leaky dams, also known woody debris dams or log have emerged effective nature-based solutions for mitigating risks while preserving essential ecosystem services. This review traces the historical evolution of from ancient water practices contemporary applications, highlighting their development and adaptation over time. It presents a comparative examination structures, outlining respective strengths limitations across ecological, hydrological, economic dimensions. The introduces conceptual classification into naturally occurring, engineered, hybrid, movable systems, showing how each form aligns with varying catchment characteristics objectives. By synthesizing foundational knowledge strategic insights, this paper establishes theoretical contextual framework understanding distinct yet complementary tools in integrated management, laying groundwork further technical evaluations. findings offer valuable insights end users by potential integral components elucidating roles risks, enhancing retention, supporting resilience.

Language: Английский

Citations

0
New data-based analysis tool for functioning of natural flood management measures reveals multi-site time-variable effectiveness DOI Creative Commons
Martyn T. Roberts, Mark E. Wilkinson, Paul D. Hallett

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 635, P. 131164 - 131164

Published: April 8, 2024

Temporary storage areas (TSAs) are a type of Natural Flood Management measure or nature-based solution that can provide additional during flood events by intercepting and attenuating surface runoff. Pressures on land use an increase in climate change induced storms means there is need to create within multifunctional rural landscapes. Implementation small-scale TSAs slowly gaining momentum, but practitioners still require further evidence their functioning different storm events. Here we present the TSA Drainage Rate Analysis tool (TSA-DRA tool), novel data-based mechanistic method only requires rainfall water level data describe individual drainage rates. We developed then used TSA-DRA perform multi-site assessment TSAs, allowing comparisons across types time-variable factors. design outlet were found be dominant controls rates when feature full. Meanwhile, differences more evident at lower levels, soil infiltration was main outflow. Results from modelling experiment using observed suggested these impact mitigation effectiveness. Specifically, for particular event, conditions NE Scotland effective spring than winter Understanding spatial temporal will help optimise existing future designs, ensuring headwater successfully integrated catchments mitigate increasing exposure hydrological extremes.

Language: Английский

Citations

0
COMPARING ROBUST OPTIMIZATION APPROACHES FOR ADDRESSING HYDROLOGIC MODEL UNCERTAINTY IN INFRASTRUCTURE PLANNING: A GREEN INFRASTRUCTURE EXAMPLE DOI
Jared D. Smith, Julianne D. Quinn, Lawrence E. Band

et al.

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: July 31, 2024

Water resources planning depends upon hydrologic models to estimate flows and storage under candidate engineering designs. However, such are calibrated with limited flow data relative the many model parameters. This may result in different equifinal parameterizations that imply optimal To assess if how this uncertainty should be considered, we compare three methods for multi-objective optimization of green infrastructure (GI): one designs most likely parameterization two robust alternatives use several 1) likelihood-weighted objective functions, 2) min-max functions. evaluate these methods, set synthetic true values parameters, them simulate "observed" streamflow, then Bayesian calibration parametric uncertainty. We results from against alternatives. The GI optimizations aim minimize flooding, low intensification, cost. find provide decisions closer those optimized

Language: Английский

Citations

0
The Surface Water Potentiality in Arid and Semi-Arid Basins Using GIS and HEC-HMS Modeling, Case Study: Gebel El Sibai Watershed, Red Sea DOI Open Access

Abdelfattah Elsayed Elsheikh,

Mahmoud A. El Ammawy,

Nessrien M. Hamadallah

et al.

Water, Journal Year: 2024, Volume and Issue: 16(21), P. 3111 - 3111

Published: Oct. 30, 2024

The Red Sea region is considered one of the regions that suffer most from water scarcity among Egyptian areas. This situation reinforces importance maximizing utilization available sources. Rainwater and flood harvesting may form a good source if practices are applied. Natural pastures, Bedouin communities, wild plants be affected by severe droughts expected due to climate change. Additional resources very important enhance resilience communities probable droughts. Five main hydrographic basins issued Gebel El Sibai (+1435 m), including Wadi Esel, Sharm Bahari, Qibli, Wizr, Umm Gheig. Detailed investigation morphometric parameters, runoff/rainfall relationship, volume using GIS HEC-HMS model each basin were estimated as well natural vegetation. study reveals rainfall ranges 84 mm 0 mm, storm (highest event) occur every 42 years with probability 2.4%. Quantitative analysis implies area has potential for flooding, especially Qibli Gheig, where Bahri represents lowest priority flooding. Gheig greatest: 12 million m3 at outlet event 15 mm. Esel collect 8.7 ratio impervious soil quantity, Bahari 2.1 m3, 1.6 Wizer 1.04 m3. Seven storage dams (SD1-SD7) proposed surface potentialities this area.

Language: Английский

Citations

0
Spatiotemporal characterization and hydrological impact of drought patterns in northwestern Morocco DOI Creative Commons
Latifa Ait Dhmane, Mohamed Elmehdi Saidi,

Jalal Moustadraf

et al.

Frontiers in Water, Journal Year: 2024, Volume and Issue: 6

Published: Dec. 6, 2024

Drought assessment and management, intensified by global warming, present critical challenges in semi-arid Mediterranean regions, impacting environmental sustainability economic stability. This study evaluates spatiotemporal drought risk the Bouregreg watershed northwest Morocco integrating remote sensing data with various indices. The Standardized Precipitation Index (SPI), Evapotranspiration (SPEI), Temperature (STI) were utilized to assess meteorological over a 12-month period. Conditions (TCI) was used evaluate temperature-related conditions for agricultural drought, while GRACE Severity (GRACEDSI) assessed hydrological on monthly scale. Additionally, trend analysis performed using Mann-Kendall Sen’s slope methods, Pearson correlations conducted among findings revealed an overall downward indices, evapotranspiration (SPEI) being primary driver. Over period, there significant increase total evaporation demand, largely attributed rising temperatures (STI TCI). Meanwhile, precipitation (SPI) remained relatively stable, highlighting impact of warming severity patterns recent years. results further indicated that is more pronounced plateau plain areas compared mountainous regions. In evaluating water reserves, storage (TWS) obtained from Gravity Recovery Climate Experiment (GRACE) utilized. Comparisons made between situ groundwater level (GWL) those TWS at resolution 0.25°. Our reveal concordant trends two datasets, despite differences resolution. appears be strongly correlated GWL measurements lag 1–4 months. underscored decline reserves worsening Correlation analyses also moderate relationship this systematic temperature rise, suggesting shared influenced other anthropogenic factors not accounted analysis. summary, these underscore vulnerability entire area forms ranging mild extreme severity.

Language: Английский

Citations

0
A holistic study on the effects of a rural flood detention basin: Flood peaks, water quality and grass growth DOI

Darragh Murphy,

John Weatherill, Rossana Henriques

et al.

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 373, P. 123858 - 123858

Published: Dec. 31, 2024

Language: Английский

Citations

0
Decision: Nature-based solutions for floods AND droughts AND biodiversity: Do we have sufficient proof of their functioning? — R1/PR10 DOI Creative Commons
Ellis Penning,

Reinaldo Peñailillo Burgos,

Marjolein Mens

et al.

Published: Sept. 26, 2023

Climate change and human-modified landscapes have led to an increase in global flood drought risks, while biodiversity has declined. The concept of using nature-based solutions (NbS) improve the water retention capacity at landscape scale, also known as ‘sponge functioning catchments,’ been recognised help reduce delay peak flows stimulate infiltration groundwater, thus reducing risks. Although various effects NbS demonstrated, there is limited evaluation combined multiple benefits for risk reduction, biodiversity. To address this gap, we analysed online databases on additional literature evaluated NbS. We found that quantitative fragmented not standard practice many projects. successfully implemented reported different environments globally, most cases lack evidence their response impacts floods, droughts, Therefore, propose four components facilitate planning, design, implementation, monitoring sponge floods droughts. First, suggest increased understanding how affects hydrological processes both events along full range potential conditions. Second, recommend evaluating effect measures a scale. Third, integrated modelling upscaling techniques should be improved quantify Finally, consistent socially relevant set indicators evaluate communicate with stakeholders. In conclusion, our analysis demonstrates need more comprehensive standardised NbS, particularly relation

Language: Английский

Citations

0