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Water publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Slope Stability Analyses and Risk Assessment for Rainfall-Induced Landslides
edited by , and Jiang Song
submission deadline 20 Dec 2025 | 4 articles | Viewed by 4386 | Submission Open
Keywords: landslides; rainfall infiltration; slope stability; physical model experiment; numerical modelling; machine learning; advanced algorithms; failure mechanism; mitigation measures; monitoring and early warning
(This special issue belongs to the Section Water Erosion and Sediment Transport)
Global Perspective on Hydrology and Water Resources Management in Complex Urban Areas
edited by Jingyuan Xue, Liuyue He and
submission deadline 20 Dec 2025 | 3 articles | Viewed by 4244 | Submission Open
Keywords: water resources management; climate change resilience; water quality control; integrated water resource planning; non-point source pollution; flood risk assessment and mitigation; drought risk assessment and mitigation; urban– rural transitional areas; coastal regoins
(This special issue belongs to the Section Hydrology)
Application of Advanced Oxidation Technologies in Water and Wastewater Purification
edited by
submission deadline 20 Dec 2025 | 4 articles | Viewed by 4238 | Submission Open
Keywords: water purification; wastewater treatment; water restoration; emerging contaminants; advanced oxidation processes; Fenton-like oxidation; photocatalysis; electrocatalysis; ozonation; non-thermal plasma; electron beam
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Impacts of Climate Change & Human Activities on Wetland Ecosystems
edited by Zhongqing Yan, Guopeng Liang, Yingxin Shang and Xueping Wang
submission deadline 20 Dec 2025 | 5 articles | Viewed by 4069 | Submission Open
Keywords: wetland ecosystems; ecosystem services and functions; protection and restoration; climate change and human activities; wetland hydrological processes; greenhouse gas (GHGs) fluxes; nutrient cycle and energy flow; water environment quality
(This special issue belongs to the Section Water and Climate Change)
Advanced Numerical Approaches for Multiphase and Cavitating Flows
edited by Linmin Li
submission deadline 20 Dec 2025 | 3 articles | Viewed by 3559 | Submission Open
Keywords: multiphase flow; cavitation; numerical simulation; Eulerian– Lagrangian approach; computational fluid dynamics
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Research on Water Supply Systems and on the Treatment and Recovery of Wastewater and Stormwater submission deadline 20 Dec 2025 | 2 articles | Viewed by 2930 | Submission Open
Keywords: water supply systems; water resources management; non-conventional water sources; water supply networks; urban water infrastructures planning; design and rehabilitation; water quality; water treatment; public health; wastewater treatment and reuse; stromwater harvesting; environemtal sustainability
(This special issue belongs to the Section Urban Water Management)
Sustainable Water Management in Agricultural Irrigation
edited by Dat Q Tran
submission deadline 20 Dec 2025 | 2 articles | Viewed by 2159 | Submission Open
Keywords: irrigated agriculture; cropping patterns; irrigation technologies; managed aquifer recharge (MAR); re-claimed/treated water; water– energy– food nexus; transboundary conflict and cooperation; water institutions
(This special issue belongs to the Section Water, Agriculture and Aquaculture)
Marine Biodiversity and Its Relationship with Climate/Environment
edited by and Valentina Perricone
submission deadline 20 Dec 2025 | 2 articles | Viewed by 2144 | Submission Open
Keywords: marine biodiversity; marine ecosystems; climate change; ocean acidification; global warming; species adaptation; habitat shift; ecosystem services; environmental impacts; marine conservation; sustainable management
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Study on Environmental Hydrology and Hydrodynamic Characteristics of Basins, Estuaries and Offshore
edited by and
submission deadline 20 Dec 2025 | 3 articles | Viewed by 2048 | Submission Open
Keywords: water environment; coastal estuary; hydrodynamic; mathematical model
(This special issue belongs to the Section Oceans and Coastal Zones)
Advanced Remote Sensing for Coastal System Monitoring and Management submission deadline 20 Dec 2025 | 3 articles | Viewed by 1979 | Submission Open
Keywords: coastal zones; remote sensing; coastal sustainable management; deep learning
(This special issue belongs to the Section Oceans and Coastal Zones)
Biodiversity of Freshwater Ecosystems: Monitoring and Conservation, 2nd Edition
edited by and
submission deadline 20 Dec 2025 | 1 articles | Viewed by 1358 | Submission Open
Keywords: biodiversity; rivers; lakes; wetlands; springs; streams; groundwater; ponds; macrophytes; macroinvertebrates; diatoms; algae
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Advances in Metal Removal and Recovery from Water
edited by
submission deadline 20 Dec 2025 | 2 articles | Viewed by 1270 | Submission Open
Keywords: wastewater treatment; water treatment; metal pollution removal; metal recovery; absorption; heavy metal
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Studies on Toxic Effects in Aquatic Organisms and Ecosystems
edited by Zongming Ren and
submission deadline 20 Dec 2025 | 2 articles | Viewed by 1214 | Submission Open
Keywords: aquatic toxicology; online monitoring technology; individual responses; toxic effects; water pollution; biodiversity; ecosystems
(This special issue belongs to the Section Biodiversity and Functionality of Aquatic Ecosystems)
Application of Hydrological Modelling to Water Resources Management submission deadline 20 Dec 2025 | 2 articles | Viewed by 1042 | Submission Open
Keywords: climate-change adaptation; climate-related disasters; decision support systems; digital twins; early warning systems; environmental uncertainties; hydrological modeling; integrated water resources management (IWRM); machine learning and deep learning; model-informed decision making; multi-criteria decision making; multi-objective opti-mization; optimal water allocation; probabilistic modeling; proactive management strategies; reinforcement learning; remote sensing and GIS applications; scheduling and planning; Sustainable Development Goals (SDGs); water– energy nexus; water supply and demand; water resources management
(This special issue belongs to the Section Hydrology)
Machine Learning Models for Flood Hazard Assessment
edited by
submission deadline 20 Dec 2025 | 1 articles | Viewed by 960 | Submission Open
Keywords: machine learning; artificial intelligent; flood hazard; flood forecasting; flood warning; flood risk; models; real time; monitoring systems; climate change; new sensors; mitigation strategies
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Advanced Design and Synthesis of Novel Photocatalyst Materials for Wastewater Remediation
edited by
submission deadline 20 Dec 2025 | 1 articles | Viewed by 872 | Submission Open
Keywords: nanomaterials; composite material; photocatalyst; organic pollutants; wastewater treatment
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Mine Water Treatment, Utilization and Storage Technology
edited by Xiaojun Wang, and
submission deadline 20 Dec 2025 | 1 articles | Viewed by 781 | Submission Open
Keywords: high-salinity wastewater; mine water treatment; mine water utilization; resource reuse; geological storage technology
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Human–Water Interactions: Water Supply, Livelihood and Rural Society
edited by Liangxin Fan
submission deadline 20 Dec 2025 | 1 articles | Viewed by 685 | Submission Open
Keywords: water governance; water consumption; water conservation; water sanitation; water supply; water resource management; public policy          
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Advanced Perspectives on the Water–Energy–Food Nexus
edited by Qiong Yue, , Mengyang Wu and
submission deadline 20 Dec 2025 | 1 articles | Viewed by 643 | Submission Open
Keywords: water– energy– food nexus; integrated management; cross-sectoral policy; climate resilience; cascading risk
(This special issue belongs to the Section Water-Energy Nexus)
Machine Learning Models for Hydrological Inference: A Case Study for Flood Events
edited by
submission deadline 20 Dec 2025 | 1 articles | Viewed by 626 | Submission Open
Keywords: development and optimization of machine learning models for flood prediction and early warning; multi-source data fusion and remote sensing applications in flood monitoring; hydrological response modeling under extreme rainfall conditions; interpretability; transferability; and uncertainty quantification of machine learning models; small-sample learning and transfer learning in data-scarce regions; hybrid modeling approaches that integrate physical-based and machine learning models; case studies and system-level applications of machine learning in real-world flood management contexts
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Advancements in Remote Sensing and UAV Technologies for Water Management in Climate-Smart Agriculture Systems
edited by , , and Selvarajah Thuseethan
submission deadline 20 Dec 2025 | 1 articles | Viewed by 596 | Submission Open
Keywords: remote sensing; climate-smart agriculture; water management; digital twins; sustainable farming; agricultural water use efficiency
(This special issue belongs to the Section Water and Climate Change)
Risk Assessment and Mitigation for Water Conservancy Projects submission deadline 20 Dec 2025 | 2 articles | Viewed by 572 | Submission Open
Keywords: dams; dikes; water diversion projects; risk; seepage; overtopping; breach; consequences; management
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Perspectives on Sustainable Wastewater Treatment Technologies
edited by Yuan Yan and Han Wang
submission deadline 20 Dec 2025 | Viewed by 433 | Submission Open
Keywords: wastewater sustainability resource recovery system optimization biosolids and biogas management techno-economic analysis (TEA) life cycle assessment nitrogen removal integrated wastewater treatment systems
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Advanced Wastewater Treatment Technologies with the Potential to Achieve Resource Recycling
edited by and
submission deadline 20 Dec 2025 | 1 articles | Viewed by 411 | Submission Open
Keywords: water conservation; sustainable water management; efficient water use; water-saving technologies; water resource preservation; climate-resilient water systems; community water stewardship
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Intelligent Water Networks: Advanced Sensing, Real-Time Analytics, and Adaptive Management for Future Water Challenges submission deadline 20 Dec 2025 | Viewed by 378 | Submission Open
Keywords: intelligent water systems; advanced sensors; real-time analytics; machine learning; digital twins; edge computing; adaptive management; IoT; water quality monitoring; predictive modeling                            
(This special issue belongs to the Section New Sensors, New Technologies and Machine Learning in Water Sciences)
Advances in Monitoring of Hydrological and Ecological Processes Under Climate Change
edited by
submission deadline 20 Dec 2025 | Viewed by 278 | Submission Open
Keywords: hydrological monitoring; ecological processes; climate change impacts; evapotranspiration modeling; data fusion; water use efficiency
(This special issue belongs to the Section Water and Climate Change)
Rainfall Variability, Drought, and Land Degradation submission deadline 20 Dec 2025 | Viewed by 261 | Submission Open
Keywords: rainfall; soil; land degradation; variabiltity; drought; modeling
(This special issue belongs to the Section Soil and Water)
Changes in the Regimes of Glacial and Permafrost-Influenced Watersheds in the High Arctic
edited by and Łukasz Franczak
submission deadline 20 Dec 2025 | Viewed by 206 | Submission Open
Keywords: proglacial catchment hydrology and hydrochemistry; glacial; snowmelt; permafrost and mixed-river regime; river flow dynamics and variability; rainfall and snowmelt floods; river and overland runoff; foodplain and channel morphology
(This special issue belongs to the Section Hydrology)
Advances in Ecohydrology in Arid Inland River Basins, 2nd Edition
edited by and
submission deadline 20 Dec 2025 | Viewed by 204 | Submission Open
Keywords: climate change and water cycle; ecohydrological processes; efficient utilization of water resources; ecohydrological modeling; ecological and hydrological coupling; ecological pattern; ecological water requirement; arid inland river basin
(This special issue belongs to the Section Ecohydrology)
Climate-Driven Coastal and Ocean Dynamics: Waves, Shoreline Changes, and Carbon Cycle Interactions submission deadline 20 Dec 2025 | Viewed by 184 | Submission Open
Keywords: coastal erosion; wave climate; carbon sequestration; shoreline dynamics; ocean acidification; blue carbon; climate adaptation; remote sensing; sediment transport; extreme events
(This special issue belongs to the Section Water and Climate Change)
Water Resource Simulation and Optimal Allocation: Theory, Methods and Applications submission deadline 20 Dec 2025 | Viewed by 138 | Submission Open
Keywords: simulation; optimization methods; hybrid simulation– optimisation; multi-objective optimisation; irrigation; hy-dropower; floods; water quality; artificial intelligence (AI); machine learning (ML); heuristics optimization; un-certainty characterization; climate change
(This special issue belongs to the Section Water Resources Management, Policy and Governance)
Novel Advanced Oxidation Technology for Water Treatment
edited by Pengwei Yan, Lei Yuan and Jimin Shen
submission deadline 20 Dec 2025 | Viewed by 117 | Submission Open
Keywords: UV; oxidants; water purification; reactive oxygen species; underlying mechanism
(This special issue belongs to the Section Water Quality and Contamination)
Water-Soil-Vegetation Interactions in Changing Climate
edited by Mingjie Shi
submission deadline 20 Dec 2025 | Viewed by 111 | Submission Open
Keywords: water– soil– vegetation nexus; carbon and water cycles; global environmental change; ecosystem resilience; sustainable management strategies
(This special issue belongs to the Section Water and Climate Change)
Rethinking Wastewater: Microbial Solutions for a Sustainable Future submission deadline 20 Dec 2025 | Viewed by 65 | Submission Open
Keywords: wastewater valorization; environmental biotechnology; activated sludge processes; microbial stress response; resource recovery; omics technologies; dissolved organic matter; circular bioeconomy; micropollutant degradation; metabolic modelling
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Geotechnical and Underground Engineering Problems Caused by Water Action
edited by Yonggang Zhang, Cheng Lyu and
submission deadline 24 Dec 2025 | 9 articles | Viewed by 9303 | Submission Open
Keywords: water– soil coupling; tunnel water inflow; rock seepage; wading slope; hydraulic coupling
(This special issue belongs to the Section Hydrogeology)
Optimisation of Water Distribution System Design and Operation Under Uncertainty submission deadline 24 Dec 2025 | Viewed by 98 | Submission Open
Keywords: water distribution systems; uncertainty analysis; hydraulic and water quality modeling under uncertainty; optimization under uncertainty; stochastic and robust optimization; adaptive operational control; decision support systems under uncertainty
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Advances in Hydrodynamics for Pumping Systems: Modeling, Optimization, and Applications
edited by , , and Yandong Gu
submission deadline 25 Dec 2025 | 4 articles | Viewed by 2565 | Submission Open
Keywords: pumping systems; hydrodynamics; multiphase flow; cavitation  ; computational fluid dynamics (CFD)  ; energy efficiency  ; turbulence modeling  ; design optimization; transient flow; renewable energy integration
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Hydrodynamics Science Experiments and Simulations, 2nd Edition
edited by , Yandong Gu, and
submission deadline 25 Dec 2025 | 4 articles | Viewed by 2270 | Submission Open
Keywords: hydrodynamic experiment; hydrodynamic simulation; hydraulic machinery; multiphase flow; hydro energy technology
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Effects of Vegetation on Open Channel Flow and Sediment Transport
edited by and
submission deadline 25 Dec 2025 | 2 articles | Viewed by 1447 | Submission Open
Keywords: aquatic vegetation; sediment transport; vegetation– flow– sediment interaction; turbulence; eco-hydraulics; open channel flow; river morphology
(This special issue belongs to the Section Hydraulics and Hydrodynamics)
Watershed Ecohydrology and Water Quality Modeling
edited by Tao Huang
submission deadline 25 Dec 2025 | 1 articles | Viewed by 584 | Submission Open
Keywords: watershed; ecohydrology; hydrologic modeling; water quality; contaminants
(This special issue belongs to the Section Ecohydrology)
Optimal Operation of Pumped Storage Hydropower Units and Renewable Energy
edited by Hao Zhang and
submission deadline 25 Dec 2025 | 1 articles | Viewed by 514 | Submission Open
Keywords: pumped storage hydropower units; renewable energy; hybrid energy system flexibility; multi-objective dynamic scheduling; low-carbon dispatch strategies; AI-driven hydropower forecasting; transient process control; hydro-meteorological uncertainty management; energy storage synergy
(This special issue belongs to the Section Water-Energy Nexus)
Water Management and Geohazard Mitigation in a Changing Climate
edited by , and Kosta Urumović
submission deadline 25 Dec 2025 | Viewed by 452 | Submission Open
Keywords: water managment; geohazards; mitigation; climate changes; sustainable development; groundwater; monitoring; mapping; modeling; risk assessment; multihazard analyses; vulnerability reduction; practical application; predictive analyses
(This special issue belongs to the Section Water and Climate Change)
Advanced Technologies for Water Erosion Mapping and Environmental Change Detection
edited by
submission deadline 25 Dec 2025 | Viewed by 121 | Submission Open
Keywords: water erosion; land degradation; environmental change detection; soil erosion mapping; digital elevation models (DEMs); gully erosion; sediment transport; erosion modelling; LiDAR and UAV photogrammetry
(This special issue belongs to the Section Water Erosion and Sediment Transport)
Energy Use Assessment and Management in Wastewater Systems
edited by and Maria do Céu Almeida
submission deadline 25 Dec 2025 | Viewed by 85 | Submission Open
Keywords: carbon footprint reduction in wastewater systems; energy efficiency; energy monitoring and optimization; energy recovery; renewable energy; sustainable wastewater management
(This special issue belongs to the Section Water-Energy Nexus)
Optimal Management and Hydrological Simulation of Water and Soil Resources Under Climate Change
edited by Chongfeng Ren, and Xiao Liu
submission deadline 25 Dec 2025 | Viewed by 81 | Submission Open
Keywords: water resources’ management; water resources’ carrying capacity; agricultural water productivi-ty; uncertainty; hydrological modeling; soil infiltration simulation; decision support system; machine learning; flash flood disaster assessment; flood risk management; drought assessment; extreme weather
(This special issue belongs to the Section Soil and Water)
Groundwater Flow and Transport Modeling in Aquifer Systems: 2nd Edition
edited by
submission deadline 25 Dec 2025 | Viewed by 72 | Submission Open
Keywords: modeling; borehole tests; laboratory tests; tracer tests; aquifer remediation; aquifer characterization; vertical circula-tion wells; geothermal resources
(This special issue belongs to the Section Hydrogeology)
Microplastics in Water and Wastewater submission deadline 25 Dec 2025 | Viewed by 64 | Submission Open
Keywords: aquatic environment; bioplastics; ecotoxicity; groundwater; microplastics; drinking water; removal efficiency; sludge; surface water; wastewater
(This special issue belongs to the Section Wastewater Treatment and Reuse)
Monitoring and Assessment of Pollutants in Coastal Waters, Sediments, and Biota, 2nd Edition
edited by and
submission deadline 25 Dec 2025 | Viewed by 60 | Submission Open
Keywords: monitoring; assessment; pollutants; coastal water; marine sediments; marine organism; marine environment; food webs
(This special issue belongs to the Section Oceans and Coastal Zones)
Recent Advances in Maritime Energy Systems
edited by and
submission deadline 25 Dec 2025 | Viewed by 55 | Submission Open
Keywords: development and utilization of marine renewable energy; computational fluid dynamics and numerical simulation; oscillating water column wave energy converter; air turbine; hydrofoil; vertical-axis turbine
(This special issue belongs to the Section Water-Energy Nexus)
Application of Nanomaterials in Soil and Aquatic Environment Remediation submission deadline 26 Dec 2025 | Viewed by 127 | Submission Open
Keywords: sustainable nanomaterials; wastewater treatment; soil remediation; degradation mechanisms; sustainability assessment; characterisation of NMs; adsorption; advanced oxidation process (AOPs); fate of NMs; photocatalyst
(This special issue belongs to the Section Wastewater Treatment and Reuse)
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