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  • Article
  • Open Access

Feature-Enhanced Erroneous Outlier Detection in Hydrological Time Series Using Ensemble Methods

  • Banujan Kuhaneswaran,
  • Golam Sorwar,
  • Ali Reza Alaei and
  • Feifei Tong
Water2026, 18(4), 446;https://doi.org/10.3390/w18040446 
(registering DOI)

8 February 2026

Data quality issues in hydrological time series directly affect hydrological modelling applications, including flood forecasting and water resource management. A critical challenge in hydrological monitoring is distinguishing erroneous outliers cause...

  • Article
  • Open Access
Water2026, 18(4), 445;https://doi.org/10.3390/w18040445 
(registering DOI)

8 February 2026

Hydrodynamic models of river networks are commonly used for flood disaster simulation, and the accuracy of model parameter settings directly affects the reliability of simulation results. Among these, Manning’s roughness coefficient is the core...

  • Article
  • Open Access
Water2026, 18(4), 444;https://doi.org/10.3390/w18040444 
(registering DOI)

7 February 2026

Seasonal groundwater (GW) pumping and climatic variability significantly impact the dynamics of greenhouse-dominated agricultural systems, yet quantitative evaluations at the local scale remain limited. This study explores non-parametric statistical...

  • Review
  • Open Access

Multi-Stable Isotope Constraints on the Sources and Evolution of Potash-Forming Fluids in the Mahai Basin, Qinghai–Tibetan Plateau

  • Zhendong Wang,
  • Qiugui Wang,
  • Zengping Ning,
  • Weigang Su,
  • Ying Ma,
  • Yujun Ma,
  • Enzong Xiao and
  • Xiaohang Lu
Water2026, 18(4), 443;https://doi.org/10.3390/w18040443 
(registering DOI)

7 February 2026

The Mahai Basin (MHB), situated in the northern Qaidam Basin on the Qinghai–Tibetan Plateau, hosts significant Quaternary potash resources. Nevertheless, the sources and evolutionary pathways of potash-forming fluids remain controversial. In th...

  • Article
  • Open Access

Near-Future Climate Change Impacts on Sado River (Southern Portugal) Flow Rates Using CMIP6-HSPF Modelling

  • André M. Claro,
  • André R. Fonseca,
  • António Fernandes,
  • Christoph Menz,
  • Carina Almeida,
  • Helder Fraga and
  • João A. Santos
Water2026, 18(4), 442;https://doi.org/10.3390/w18040442 
(registering DOI)

7 February 2026

Climate change impacts on the Sado River (southwest Portugal) flow rates (FRs) were assessed for the first time under the 2041–2060 Shared Socioeconomic Pathways: 1–2.6 W/m2 (SSP1-2.6), 3–7.0 W/m2 (SSP3-7.0), and 5–8.5 W/m2 (S...

  • Article
  • Open Access
Water2026, 18(4), 441;https://doi.org/10.3390/w18040441 
(registering DOI)

7 February 2026

Conventional bioretention systems face challenges in effectively removing dissolved nutrients, heavy metals, and emerging contaminants from stormwater runoff. This study investigates the application of thermally modified steel slag (700 °C) as a...

  • Article
  • Open Access
Water2026, 18(4), 439;https://doi.org/10.3390/w18040439 
(registering DOI)

7 February 2026

The quality of bathing waters along the Romanian Black Sea coast is critical to environmental conservation and sustainable tourism development. This study assesses water quality at several key beaches along the Black Sea Littoral in Romania, using a...

  • Article
  • Open Access

Spatiotemporal Variation and Source Apportionment of Total Phosphorus in the Xiangjiang River Based on an Interpretable Association Rule Mining Framework

  • Xiaonan Du,
  • Cen Meng,
  • Chao Xu,
  • Shulin Xu,
  • Tingting Zhang,
  • Pingxiu Teng,
  • Ao Deng,
  • Peng Zeng and
  • Feng Liu
Water2026, 18(4), 438;https://doi.org/10.3390/w18040438 
(registering DOI)

7 February 2026

Phosphorus enrichment remains a major driver of eutrophication in lake-feeding rivers, yet effective regulation is hindered by insufficient understanding of the spatiotemporal variability and dominant sources of total phosphorus (TP) at the basin sca...

  • Article
  • Open Access

6 February 2026

Axial flow pumps, widely utilized in critical fields such as agricultural irrigation, urban water diversion and flood control, play an indispensable role in large-scale water transport and drainage projects due to their high-flow and low-head charact...

  • Article
  • Open Access

Future Climate Change Increases Streamflow and Risks of Hydrological Hazards in the Pearl River Basin

  • Haoyuan Yu,
  • Qichun Yang,
  • Liuqian Yu,
  • Xia Li,
  • Minyang Li and
  • Yingxian Yang

6 February 2026

Understanding and predicting climate change impacts on the terrestrial water cycle is essential for water resources management and hazard prevention. This study aims to project future runoff of a densely-populated river basin, the Pearl River Basin (...

  • Article
  • Open Access

Impact of Food Processing Industry Wastewater on Root Growth and DNA Damage in Allium cepa L. as Assessed by the Comet Assay

  • Matiba Tufail,
  • Muhammad Luqman,
  • Zahid Mehmood,
  • Wasim Abbas,
  • Maryam Iqbal,
  • Harma Shah,
  • Imran Farooq Awan,
  • Noor Sana,
  • Arooba John and
  • Muhammad Umar Farooq Awan
  • + 4 authors

6 February 2026

Wastewater from food processing industries contains synthetic dyes and preservatives that may pose phytotoxic and genotoxic risks. The present work represents an exploratory study based on a wastewater source and sampling period. Wastewater was chara...

  • Article
  • Open Access

6 February 2026

The optimal design of riverbank retaining walls requires a careful balance between structural safety, constructability, and economic efficiency. In this study, a constraint-aware optimization framework is developed for the design of concrete gravity...

  • Article
  • Open Access

Sustainable Selection Criteria for Small Wastewater Treatment Plants Ensuring Biodegradation

  • Zbigniew Mucha,
  • Agnieszka Generowicz,
  • Kamil Zieliński,
  • Iga Pietrucha,
  • Anna Kochanek,
  • Piotr Herbut,
  • Paweł Kwaśnicki,
  • Anna Gronba-Chyła and
  • Elżbieta Sobiecka

6 February 2026

The rapid development of rural and peri-urban areas increases the demand for decentralized wastewater treatment systems. Small wastewater treatment plants (SWTPs) with a capacity below 2000 PE are becoming an important element of local water protecti...

  • Article
  • Open Access

Hydraulic Characteristics and the Adaptability to Water-Level Fluctuation of the Vertical-Slot Fishway

  • Xianglong Huang,
  • Junjun Tan,
  • Yuanyang Wang,
  • Junjian Sun,
  • Sicheng Zeng,
  • Shuaijie Wu and
  • Xiaotao Shi

6 February 2026

This study explored the hydraulic characteristics and the adaptability to water-level fluctuations of the vertical-slot fishway. The maximum allowable water depth difference between the entrance and exit was calculated for a one-entrance fishway and...

  • Article
  • Open Access

Understanding Spatiotemporal Inundation Dynamics in the Sundarbans Mangroves Through Hydrodynamic Modelling

  • Fazlul Karim,
  • Shaikh Nahiduzzaman,
  • Raju Ahmmad,
  • Mohammed Mainuddin,
  • Shahriar Wahid and
  • Rubayat Alam

6 February 2026

Tidal inundation plays a critical role in maintaining the ecosystem services of the Sundarbans mangrove forest. In this study, we configured and calibrated a coupled one-dimensional (1D) river network and two-dimensional (2D) floodplain hydrodynamic...

  • Article
  • Open Access

Turbulence in a Bend in the Presence of Emergent Vegetation and a 3D Pool Bedform

  • Alirahm Rahimpour,
  • Hossein Afzalimehr,
  • Saeid Okhravi,
  • Mohammad Nazari-Sharabian and
  • Moses Karakouzian

6 February 2026

The interaction of emergent vegetation and three-dimensional (3D) bedforms is essential for understanding turbulent flow dynamics in curved channels. A laboratory investigation can help to collect required data under controlled conditions. Experiment...

  • Article
  • Open Access
22 Views
20 Pages

6 February 2026

Ultrapure water (UPW) distribution loops must deliver stable hydraulics while limiting contamination from polymer piping. This study integrates computational fluid dynamics (CFD) with systematic pipe autopsy to examine contaminant behavior in a pilot...

  • Article
  • Open Access
34 Views
19 Pages

Smart Technological Urban Flood Management Strategies Are “Must-Do” Approaches: The Case of Chinese Coastal Megacity, Ningbo, East Coast of China

  • Faith Ka Shun Chan,
  • Weiwei Gu,
  • Fang Zhang,
  • Xiaolei Pei,
  • Zilin Wang,
  • Lingwen Lu,
  • Ming Cheng,
  • Yuhe Wang,
  • Weiguo Zhang and
  • Yutian Jiang

6 February 2026

Ningbo (NGB), a major port city on China’s east coast, is defined by a network of over 100 rivers across three major catchments. From the 1970s to the 2000s, extensive engineering, including channelisation and embankment construction, was used...

  • Review
  • Open Access
107 Views
13 Pages

Marine Pollution in Panama: A Bibliometric Approach to Knowledge Gaps and Institutional Influence

  • Nelva E. Alvarado-González,
  • Yulissa De Gracia,
  • Jenifer Ortega,
  • Maricselis Díaz,
  • Yostin Añino,
  • Xabier Lekube,
  • Maren Ortiz-Zarragoitia and
  • Beñat Zaldibar

6 February 2026

Human activities in Panama, such as agriculture, industry, and transport, have led to the release of pollutants that affect the health of marine and coastal ecosystems. However, there is a lack of bibliographic compilation studies to understand the c...

  • Article
  • Open Access
143 Views
13 Pages

Tritium and Plutonium Time Series from the Puruogangri Ice Field, Tibetan Plateau, China

  • László Palcsu,
  • Miruna Cotan,
  • Lide Tian,
  • Cheng Wang,
  • Liu Feng,
  • Xu Chenhao,
  • Yu Songlin,
  • Magdolna Szilágyi,
  • Loránd Zákány and
  • Marjan Temovski
  • + 2 authors

5 February 2026

Ice cores retrieved from the Third Pole provide invaluable information about past and present environmental changes. Here we present, for the first time, a continuous tritium and plutonium isotope profile of the Puruogangri ice field, Tibetan Plateau...

  • Article
  • Open Access
264 Views
27 Pages

5 February 2026

Community water systems in the United States provide drinking water to more than 300 million people annually, making their reliability fundamental to public health. In regions with long histories of racial segregation and unequal infrastructure maint...

  • Article
  • Open Access
69 Views
18 Pages

5 February 2026

This study, based on stable hydrogen and oxygen isotope observations of multiple water bodies (precipitation, river water, soil water, and groundwater) in the Ami Dongsou alpine arid watershed on the southern slope of the Qilian Mountains during 2023...

  • Article
  • Open Access
134 Views
20 Pages

Environmental Impact of a Portable Nature-Based Solution (NBS) Coupled with Solar Photocatalytic Oxidation for Decentralized Wastewater Treatment

  • Lobna Mansouri,
  • Sabrine Saadellaoui,
  • Riccardo Bresciani,
  • Khaoula Masmoudi,
  • Hanen Jarray,
  • Thuraya Mellah,
  • Ahmed Ghrabi,
  • Hanene Akrout,
  • Latifa Bousselmi and
  • Fabio Masi

5 February 2026

This study presents a life cycle assessment of a low-cost pilot-scale wastewater treatment system that combines solar photocatalytic oxidation with Nature-based Solutions (NBSs) for a specially constructed wetland (CW). The prototype was designed and...

  • Article
  • Open Access
54 Views
22 Pages

Projected Future Trends in Runoff and Sediment Transport in Typical Rivers of the Yellow River Basin, China

  • Beilei Liu,
  • Yongbin Wei,
  • Chuanming Wang,
  • Xiaorong Chen,
  • Pan Wang,
  • Jianye Ma and
  • Peng Li

5 February 2026

This study systematically evaluated the response mechanisms of water and sediment processes in the Kuye River Basin to climate change and human activities from 2023 to 2053 by integrating multi-source climate scenarios (CMIP5 models), land-use change...

  • Article
  • Open Access
161 Views
27 Pages

5 February 2026

Nowadays, river systems exhibit significant geomorphic changes that primarily reflect their response to the climate signal, driven by ongoing climate change. In this context, detecting future trends in riverbed dynamics is crucial, especially from a...

  • Article
  • Open Access
76 Views
25 Pages

5 February 2026

The study investigates the projected impact of climate change on water runoff in the upper Parsęta catchment, a postglacial lowland basin located in northwestern Poland. In the first step of the analysis, hydrological simulations for the period...

  • Article
  • Open Access
133 Views
23 Pages

5 February 2026

Flood simulation in small- and medium-sized catchments is hindered by data scarcity and strong hydroclimatic heterogeneity. Distributed models with pedotransfer functions offer new opportunities, yet their parameter sensitivity and regional applicabi...

  • Article
  • Open Access
142 Views
19 Pages

Wetland Landscape Response to Partially Treated Sewage in Unconstrained Systems

  • R. Eugene Turner,
  • James E. Bodker and
  • Christopher Schulz

5 February 2026

We conducted a long-term assessment of how natural free-water surface (FWS) wetlands respond to sustained loads of partially treated municipal effluent. We quantified the effects on vegetative cover, ammonium concentration, and fecal coliform bacteri...

  • Article
  • Open Access
143 Views
15 Pages

Environmental Evolution Recorded by Tamarix Nebkhas in the Qaidam Basin

  • Yongxin Zeng,
  • Chongyi E,
  • Jiawei Wang,
  • Qiuming Tong,
  • Kejia Li and
  • Ming Tang

5 February 2026

A typical Tamarix nebkha was studied in the southern Qaidam Basin, China. K-feldspar pIRIR dating was applied to establish a reliable chronological framework, and an Undatable age–depth model was constructed. Accumulation rates (AR) declined in...

  • Review
  • Open Access
95 Views
13 Pages

Diel Variability of CO2 and CH4 from Inland Waters: Patterns, Drivers, and Implications

  • Lingling Li,
  • Jiale Zhu,
  • Yunqiao Shao,
  • Yuwen Qian and
  • Renhua Yan

5 February 2026

Inland waters exhibit pronounced temporal variability in CO2 and CH4 emissions. However, existing research has predominantly focused on seasonal to interannual scales, with most field measurements conducted during daytime hours. Consequently, diel (2...

  • Review
  • Open Access
194 Views
32 Pages

4 February 2026

Riparian soils co-contaminated with heavy metals and organic pollutants present a formidable environmental challenge; conventional single-target remediation strategies are frequently insufficient due to the synergistic interactions between contaminan...

  • Article
  • Open Access
123 Views
21 Pages

4 February 2026

Drought leads to declining water levels and reduced water volume in lakes, significantly altering their water quality. Current research has primarily examined water quality during drought episodes or compared conditions before and after such events....

  • Article
  • Open Access
157 Views
17 Pages

Impacts of Extreme Temperature and Drought on Water Quality and Phytoplankton Biomass in Nanwan Reservoir (China)

  • Kunjie Wu,
  • Zhiguo Hu,
  • Yuan Tian,
  • Xin Liu,
  • Chenxi Ju,
  • Chaoqun Su,
  • Yuanye Ma,
  • Huanan Gao,
  • Liangjie Zhao and
  • Xusheng Guo

4 February 2026

Climate change has led to increasingly frequent and unpredictable droughts and high-temperature events, creating extreme conditions that profoundly impact the productivity of freshwater ecosystems. In this study, we evaluated the effects of extreme t...

  • Article
  • Open Access
129 Views
16 Pages

4 February 2026

To analyze the characteristics of acoustic emission (AE) and electromagnetic radiation (EMR) signals in specimens with different water contents during impact loading, impact tests were conducted on sandstone under dry, natural, and saturated conditio...

  • Article
  • Open Access
403 Views
25 Pages

Spatiotemporal Analysis of the Groundwater Level in Meoqui, Chihuahua, Mexico—Water for the Future in a Growing Area in the North Central Desert of Mexico

  • Martín Alfredo Legarreta-González,
  • Cesar A. Meza-Herrera,
  • Rafael Rodríguez-Martínez,
  • Darithsa Loya-González,
  • Carlos Servando Chávez-Tiznado,
  • Pedro Antonio Robles-Trillo,
  • Fernando Arellano-Rodríguez,
  • Angeles De Santiago-Miramontes and
  • Francisco Gerardo Véliz-Deras

4 February 2026

A variety of statistical techniques were assessed for their usefulness for analysing the pattern of geographical and temporal changes in groundwater levels in order to diagnose the water supply in Meoqui, Chihuahua, which is situated in dry North-Cen...

  • Article
  • Open Access
119 Views
21 Pages

Ecotoxicity of Antivirals Used to Treat COVID-19 Patients: Analysis of Related Structural Features

  • Matija Cvetnić,
  • Viktorija Martinjak,
  • Martina Miloloža Nikolić,
  • Luka Večenaj,
  • Dora Lastovčić,
  • Lidija Furač,
  • Dajana Kučić Grgić,
  • Tomislav Bolanča and
  • Šime Ukić

4 February 2026

Antiviral substances are considered emerging contaminants. Once released into the environment, they may affect organisms through complex and often still-unknown mechanisms. This study focuses on a class of antiviral substances with potential use in t...

  • Article
  • Open Access
128 Views
21 Pages

Assessing Seepage Behavior and Hydraulic Gradient Conditions in the Lam Phra Phloeng Earth Fill Dam, Thailand

  • Pinit Tanachaichoksirikun,
  • Uma Seeboonruang,
  • Uba Sirikaew and
  • Witthawin Horpeancharoen

4 February 2026

This study evaluates seepage behavior and hydraulic gradient conditions at the Lam Phra Phloeng Earthfill Dam in Nakhon Ratchasima, Thailand, by integrating long-term instrumentation records, updated geotechnical data, and deterministic numerical mod...

  • Article
  • Open Access
135 Views
21 Pages

4 February 2026

Urban flood information enables managers to rapidly synthesize comprehensive flood event profiles, serving as critical evidence for flood control decision making. Compared with traditional methods, public data offer unprecedented spatiotemporal granu...

  • Article
  • Open Access
147 Views
24 Pages

4 February 2026

Due to the weak electrical response characteristics of groundwater nitrate contamination, traditional monitoring and remediation assessment methods are limited by low spatiotemporal resolution, high cost, and strong subjectivity. To address this issu...

  • Article
  • Open Access
146 Views
17 Pages

Real-Time Detection of River Contaminants Using Neural Networks: A Case Study of the Ebro River

  • Enrique Bonet,
  • Maria Teresa Yubero,
  • Jordi Llado and
  • Lluis Sanmiquel

4 February 2026

According to the UN World Water Development Report 2024, global food production has more than doubled over the past three decades, placing increasing pressure on freshwater systems due to climate change, urban expansion, and intensified pollution eve...

  • Article
  • Open Access
182 Views
19 Pages

Assessing Urban Flood Susceptibility Using Random Forest Machine Learning and Geospatial Technologies: Application to the Bonoumin-Palmeraie Watershed, Abidjan (Côte d’Ivoire)

  • Jean Homian Danumah,
  • Wilfred Ahoumodom Ataba,
  • Valère Carin Jofack Sokeng,
  • You Lucette Akpa,
  • Mahaman Bachir Saley and
  • Andrew Ogilvie

4 February 2026

Recurrent flooding poses a persistent and growing threat to West African watersheds facing rapid urbanization and climate change. Despite advances in machine learning and geospatial datasets, urban planning and flood prevention often rely on limited...

  • Article
  • Open Access
160 Views
35 Pages

3 February 2026

Bacterial sourcing in urban watersheds is a critical water quality concern because elevated index bacteria concentrations routinely trigger beach advisories and closures in coastal Southern California and elsewhere. This study evaluates diurnal contr...

  • Article
  • Open Access
597 Views
35 Pages

Inter-Comparison of Deep Learning Models for Flood Forecasting in Ethiopia’s Upper Awash Basin

  • Girma Moges Mengistu,
  • Addisu G. Semie,
  • Gulilat T. Diro,
  • Natei Ermias Benti,
  • Emiola O. Gbobaniyi and
  • Yonas Mersha

3 February 2026

Flood events driven by climate variability and change pose significant risks for socio-economic activities in the Awash Basin, necessitating advanced forecasting tools. This study benchmarks five deep learning (DL) architectures, Convolutional Neural...

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Water - ISSN 2073-4441