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Hydrology, Volume 13, Issue 2

2026 February - 33 articles

Cover Story: Urban groundwater models are often used as the basis for urban planning, water resources, policy, and flood protection. However, they usually rely on incomplete and uncertain geological datasets. This study investigates how uncertainty in geological interpretation propagates into urban hydrogeological modeling. Using the Ouseburn catchment in Newcastle upon Tyne in the United Kingdom as a case study, it develops an ensemble of groundwater models using different geological realizations and performs a Monte Carlo analysis on the different model formulations. Results show that while simulated baseflows remain relatively stable, there is a connection between simulated groundwater level sensitivity and areas of high geological uncertainty, highlighting the need to explicitly account for geological uncertainty in groundwater modeling. View this paper
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Articles (33)

  • Article
  • Open Access
2 Citations
1,311 Views
20 Pages

Spatiotemporal Characteristics and Identification of Typical Hydrological Patterns of Interval Inflow in the Three Gorges Reservoir Basin, China

  • Qi Zhang,
  • Zhifei Li,
  • Yaoyao Dong,
  • Hongyan Wang,
  • Yu Wang,
  • Zhonghe Li,
  • Quanqing Feng and
  • Hefei Huang

23 February 2026

The Three Gorges Reservoir (TGR) in China is one of the world’s largest hydropower projects. Interval inflow, originating from ungauged areas between the upstream gauging control stations (Zhutuo, Beibei, Wulong) and the TGR dam site, is a crit...

(This article belongs to the Section Water Resources and Risk Management)
  • Article
  • Open Access
1,557 Views
21 Pages

Beyond Vertical Accuracy: Benchmarking Global DEMs for Hydrologic Connectivity and Flood Sensitivity in Flat Coastal Plains

  • Jose Miguel Fragozo Arevalo,
  • Jairo R. Escobar Villanueva and
  • Jhonny I. Pérez-Montiel

22 February 2026

We assessed the vertical accuracy of six global digital elevation models—FABDEM (SRTM-enhanced), SRTM, ASTER GDEM, ALOS AW3D30, DeltaDTM and GEDTM—against a local photogrammetry-derived DEM as a benchmark in a flat coastal plain of the Co...

(This article belongs to the Special Issue Hydrological Modeling and Sustainable Water Resources Management, 2nd Edition)
  • Article
  • Open Access
1,586 Views
25 Pages

Spatiotemporal Drought Assessment Projections for Climate-Resilient Planning in Distinct Mediterranean Agroecosystems

  • Stavros Sakellariou,
  • Nicolas Dalezios,
  • Marios Spiliotopoulos,
  • Nikolaos Alpanakis,
  • Stergios Kartsios,
  • Ioannis Faraslis,
  • Georgios A. Tziatzios,
  • Pantelis Sidiropoulos,
  • Nicholas Dercas and
  • Radhouan Nsiri
  • + 7 authors

15 February 2026

Drought is expected to intensify under climate change, posing significant risks to Mediterranean agroecosystems. This study provides long-term projections of drought and wetness conditions for three representative Mediterranean regions—Eastern...

(This article belongs to the Section Hydrology–Climate Interactions)
  • Article
  • Open Access
1 Citations
907 Views
23 Pages

Deciphering Spatial Patterns in Groundwater Quality Across Nouvelle-Aquitaine, France: A Multivariate Analysis of Two Decades of Monitoring Data

  • Mouna El Jirari,
  • Abdoul Azize Barry,
  • Abderrahim Bousouis,
  • Zouhair Zeiki,
  • Meryem Ayach,
  • Mohamed Sadiki,
  • Abdelhak Bouabdli,
  • Meryem Touzani,
  • Muriel Guiraud and
  • Laurent Barbiero
  • + 1 author

14 February 2026

Groundwater, a vital resource for drinking water supply, must be managed sustainably to ensure its availability and quality. In France, the SISE-Eaux database on water intended for human consumption, archived by the Regional Health Agencies (ARS) sin...

  • Article
  • Open Access
686 Views
18 Pages

12 February 2026

The determination of groundwater background levels is a prerequisite for assessing and analyzing groundwater characteristics. Shanghai is among the most economically developed regions in China and is located in the estuary of the Yangtze River, where...

  • Editorial
  • Open Access
1,372 Views
8 Pages

Editorial: Hydrodynamics and Water Quality of Rivers and Lakes

  • Gabriela Elena Dumitran,
  • Liana Ioana Vuta,
  • Elisabeta Cristina Timis and
  • Minxue He

12 February 2026

The hydrodynamics and water quality of rivers and lakes are governed by complex interactions among flow, mixing, stratification, sediment transport, and biogeochemical processes (Ji, 2017) [...]

(This article belongs to the Special Issue Hydrodynamics and Water Quality of Rivers and Lakes)
  • Article
  • Open Access
4 Citations
1,690 Views
25 Pages

11 February 2026

Groundwater is a critical strategic resource supporting agricultural production and ecological security in the transboundary river basins of Northeast China. However, intensified climate variability and rapid agricultural expansion over the past two...

(This article belongs to the Topic Groundwater Sustainability: Innovations in Resource Management and Environmental Protection)
  • Article
  • Open Access
1 Citations
969 Views
21 Pages

Spatiotemporal Variability and Extreme Precipitation Characteristics in Arid Region of Ordos, China

  • Shengjie Cui,
  • Shuixia Zhao,
  • Chao Li,
  • Yingjie Wu,
  • Xiaomin Liu,
  • Ping Miao,
  • Shiming Bai,
  • Yajun Zhou and
  • Jinrong Li

11 February 2026

Studying the precipitation characteristics and extreme precipitation events in arid and semi-arid regions is of significant baseline value for optimizing water resource allocation and utilizing precipitation resources. Utilizing multi-scale ERA5 prec...

(This article belongs to the Special Issue Global Rainfall-Runoff Modelling)
  • Article
  • Open Access
1,622 Views
24 Pages

Quasi-Global (50° S–50° N) of Soil Moisture and Precipitation Extremes

  • Aoqi Shi,
  • Jun Liu,
  • Taoyu Jin,
  • Zhuhe Li,
  • Wenfu Yang,
  • Wenwen Wang and
  • Wenmin Zhang

9 February 2026

Clarifying the interplay between extreme soil moisture (SM) and precipitation (P) is imperative to understand the impacts of extreme events on ecosystems in a changing climate. However, the detailed relationships, pathways, and quantitative character...

(This article belongs to the Topic Advances in Hydrogeological Research)
  • Article
  • Open Access
3 Citations
2,146 Views
35 Pages

Hydrological Model Calibration in Data-Scarce Mediterranean Catchments: A Comparative Assessment of Three Strategies

  • Afshin Jahanshahi,
  • Felice D. Pacia,
  • Pasquale Perrini,
  • Angelo Avino,
  • Awais Naeem Sarwar,
  • Ruodan Zhuang,
  • Umberto Terracciano,
  • Pasquale Coccaro,
  • Luciana Giuzio and
  • Salvatore Manfreda

9 February 2026

Hydrological calibration in data-scarce catchments is challenged by non-stationary regimes, fragmented data, and systematic measurement errors. Conventional calibration approaches often assume continuous records and rely on standard performance metri...

  • Article
  • Open Access
1 Citations
2,261 Views
33 Pages

6 February 2026

Rapid urbanization has led to increasing structural modification of river catchments through dam construction and concrete-lining of natural channels as flood management measures. These interventions can alter the natural hydrology. This necessitates...

(This article belongs to the Special Issue The Influence of Landscape Disturbance on Catchment Processes)
  • Feature Paper
  • Article
  • Open Access
1 Citations
2,721 Views
34 Pages

Seasonal Inflow Shifts and Increasing Hot–Dry Stress for Eagle Mountain Lake Reservoir, Texas: SWAT Modeling with Downscaled CMIP6 Daily Climate and Observed Operations

  • Gehendra Kharel,
  • Daniel A. Ayejoto,
  • Brendan L. Lavy,
  • Michele Birmingham,
  • Tapos K. Chakraborty,
  • Md Simoon Nice and
  • Portia Asare

6 February 2026

Climate change can alter both the amount and timing of inflows to water supply reservoirs while also increasing heat-driven demand and the likelihood of stressful warm-season conditions. Climate-driven changes in inflow to Eagle Mountain Lake Reservo...

(This article belongs to the Special Issue Water Resources Management Under Uncertainty and Climate Change (Second Edition))
  • Article
  • Open Access
3 Citations
1,248 Views
35 Pages

Reaction of Minimum Streamflow of Arid Kazakhstan Rivers to Climate Non-Stationarity

  • Marat Moldakhmetov,
  • Lyazzat Makhmudova,
  • Ainur Mussina,
  • Assel Abdullayeva,
  • Lyazzat Birimbayeva,
  • Marzhan Tursyngali,
  • Bakyt Imamova,
  • Makpal Dautalieva,
  • Sagi Buralkhiyev and
  • Harris Vangelis

5 February 2026

This article provides a comprehensive analysis of long-term changes in the minimum river flow of the southern rivers of Western Kazakhstan (Temir, Oiyil, Zhem) for the period 1940–2022, with an emphasis on summer minimum and winter low flow as...

  • Article
  • Open Access
3 Citations
1,397 Views
25 Pages

4 February 2026

Reduced soil moisture (SM) together with elevated vapor pressure deficit (VPD) suppresses gross primary productivity (GPP) and thus weakens the capacity of the terrestrial carbon pool. Against the backdrop of global climate change, soil and atmospher...

(This article belongs to the Section Hydrology–Climate Interactions)
  • Article
  • Open Access
1,935 Views
24 Pages

High-Frequency Multi-Satellite Observations of Brahmaputra River Hydrology and Floodplain Dynamics

  • Faruque Abdullah,
  • Jamal Khan,
  • Nasreen Jahan,
  • A.K.M. Saiful Islam and
  • Sazzad Hossain

4 February 2026

Reliable observation of water resources is a major challenge for sustainable development, particularly in the river-centric deltaic countries like Bangladesh, where the data is generally scarce. Leveraging operational satellites, this study presents...

(This article belongs to the Section Surface Waters and Groundwaters)
  • Article
  • Open Access
10 Citations
1,781 Views
38 Pages

3 February 2026

This study assesses groundwater quality and nitrate-related health risks in the Skhirat coastal aquifer (Morocco) using a multidisciplinary approach. A total of thirty groundwater wells were sampled and analyzed for physico-chemical properties, inclu...

(This article belongs to the Special Issue Novel Procedures and Methodologies for Surface and Underground Water Quality Analysis: Theory and Application)
  • Article
  • Open Access
2 Citations
1,701 Views
38 Pages

3 February 2026

Selenium contamination in arid agricultural basins remains a key ecological concern, yet the Wister Unit of the Imperial Wildlife Area has received comparatively little hydrochemical study. This investigation provides the most integrated assessment t...

  • Article
  • Open Access
3 Citations
1,267 Views
19 Pages

2 February 2026

Groundwater heavy metal contamination (GHMC) has drawn significant attention in China over recent decades due to industrialization. However, effective monitoring and early warning remain global challenges because of the limited understanding of heavy...

(This article belongs to the Topic Critical Issues in Groundwater Pollution Monitoring and Risk Warning)
  • Feature Paper
  • Article
  • Open Access
1,620 Views
29 Pages

Investigating the Influence of Geological Uncertainty on Urban Hydrogeological Modeling

  • Charalampos Ntigkakis,
  • Stephen Birkinshaw and
  • Ross Stirling

2 February 2026

Groundwater models form the basis for investigating subsurface processes that relate to groundwater flow. Urban cover, however, usually inhibits the collection of new subsurface or geological data. Therefore, models usually depend on existing, poor-q...

(This article belongs to the Topic Advances in Hydrogeological Research)
  • Feature Paper
  • Article
  • Open Access
1,353 Views
18 Pages

Using High-Resolution Hydrodynamic Models to Assess the Environmental Status of Highly Modified Transitional Waters in Salt Marshes

  • Cira Buonocore,
  • Juan J. Gomiz-Pascual,
  • Ander López Puertas,
  • Óscar Álvarez Esteban,
  • Rafael Mañanes,
  • María L. Pérez Cayeiro,
  • Alfredo Izquierdo González,
  • Antonio Gómez Ferrer,
  • Noelia P. Sobrino González and
  • Miguel Bruno

2 February 2026

Effective management of transitional waters requires collaboration between administrative and scientific institutions, in line with the sustainable water management principles established by the Water Framework Directive (WFD, 2000/60/EC). The Cadiz...

(This article belongs to the Special Issue Novel Procedures and Methodologies for Surface and Underground Water Quality Analysis: Theory and Application)
  • Feature Paper
  • Article
  • Open Access
1 Citations
1,741 Views
31 Pages

1 February 2026

Effective Water Resource Management (WRM) requires the integration of physical hydrological processes with institutional drought response plans. In Romania, the Olt River Basin represents one of the most highly regulated catchments, where water secur...

(This article belongs to the Section Water Resources and Risk Management)
  • Article
  • Open Access
3 Citations
2,788 Views
24 Pages

Hybrid Ensemble Learning for TWSA Prediction in Water-Stressed Regions: A Case Study from Casablanca–Settat Region, Morocco

  • Youssef Laalaoui,
  • Naïma El Assaoui,
  • Oumaima Ouahine,
  • Thanh Thi Nguyen and
  • Ahmed M. Saqr

1 February 2026

A hybrid machine learning framework has been developed in this study to estimate Terrestrial Water Storage Anomalies (TWSA) in Morocco’s Casablanca–Settat region, which faces serious groundwater stress due to rapid urbanization, intensive...

(This article belongs to the Topic Advances in Hydrological Remote Sensing)
  • Article
  • Open Access
1,305 Views
16 Pages

1 February 2026

Understanding the characteristics of precipitation datasets in a given region is crucial for hydrological studies. This study focuses on the British Columbia (BC) Province in Canada and evaluates the statistical characteristics of precipitation data...

(This article belongs to the Special Issue Hydrological Modeling and Sustainable Water Resources Management, 2nd Edition)
  • Feature Paper
  • Article
  • Open Access
1,433 Views
29 Pages

1 February 2026

This study investigates how a Long Short-Term Memory (LSTM) model internally represents baseflow contributions in snowmelt-driven, semi-arid mountain basins with heterogeneous geologic characteristics. Five basins in the Sangre de Cristo Mountains of...

(This article belongs to the Special Issue Machine Learning Applications in Soil Water and Groundwater Assessment)
  • Article
  • Open Access
1 Citations
1,678 Views
20 Pages

Copula-Based Bayesian Inference Approaches for Uncertainty Quantification for Hydrological Simulation

  • Feng Wang,
  • Ruixin Duan,
  • Jiannan Zhang,
  • Mengyu Zhai,
  • Yanfeng Li,
  • Yurui Fan and
  • Yulei Xie

29 January 2026

In this study, an advanced copula-based Bayesian inference framework is proposed to characterize probabilistic features in hydrological simulations. Specifically, a Copula–Metropolis–Hastings (CopMH) algorithm is developed through integra...

(This article belongs to the Special Issue Hydrological Modeling and Sustainable Water Resources Management, 2nd Edition)
  • Article
  • Open Access
699 Views
26 Pages

28 January 2026

Terminal lakes in arid regions are highly vulnerable to climate variability and human water management, yet their long-term hydrological responses under multi-river regulation remain insufficiently quantified. Using Taitema Lake at the terminus of th...

  • Article
  • Open Access
1 Citations
864 Views
26 Pages

28 January 2026

Urbanization in mountainous regions alters hydrologic systems, yet the spatial patterning of residential (RA) and non-residential (NRA) areas in response to hydrologic constraints remains poorly quantified. In this study, we analyzed how such constra...

(This article belongs to the Section Hydrology and Economics/Human Health)
  • Article
  • Open Access
2 Citations
4,367 Views
20 Pages

Designing for the Past in a Nonstationary Climate: Evidence from Cyclone Ditwah’s Extreme Rainfall in Sri Lanka

  • Chamal Perera,
  • Nadee Peiris,
  • Luminda Gunawardhana,
  • Lalith Rajapakse,
  • Nimal Wijayaratna,
  • Binal Chatura Dissanayake and
  • Kasun De Silva

28 January 2026

The November 2025 extreme rainfall event associated with Tropical Cyclone Ditwah caused catastrophic flooding and landslides across Sri Lanka. This study presents a national-scale statistical and Intensity–Duration–Frequency (IDF)-based a...

(This article belongs to the Section Statistical Hydrology)
  • Feature Paper
  • Article
  • Open Access
4 Citations
3,716 Views
28 Pages

28 January 2026

The application of two-dimensional (2D) hydrologic and hydraulic modeling tools is increasing for overland flow simulation, as they represent spatial changes in depth, velocity, and flow conditions more accurately. Recently, the US Army Corps HEC-HMS...

  • Technical Note
  • Open Access
1,714 Views
23 Pages

SWAT-Based Assessment of the Water Regulation Index Under RCP 4.5 and RCP 8.5 Scenarios in the San Pedro River Basin

  • Miguel Angel Arteaga Madera,
  • Teobaldis Mercado Fernández,
  • Amir David Vergara Carvajal,
  • Yeraldin Serpa-Usta and
  • Alvaro Alberto López-Lambraño

27 January 2026

This study evaluated the water supply and regulation of the San Pedro River basin, located in the municipality of Puerto Libertador (Córdoba, Colombia), under climate change scenarios, using the SWAT (Soil and Water Assessment Tool) hydrologic...

  • Article
  • Open Access
1,012 Views
16 Pages

27 January 2026

The rapid expansion of tunnel construction in mountainous regions faces significant challenges due to the heterogeneity of surrounding rocks caused by faults, fractures, and karst features, which strongly affect groundwater seepage. Traditional homog...

(This article belongs to the Topic Water-Soil Pollution Control and Environmental Management)
  • Feature Paper
  • Article
  • Open Access
1,126 Views
22 Pages

Development of an Agricultural Water Risk Indicator Framework Using National Water Model Streamflow Forecasts

  • Joseph E. Quansah,
  • Ruben D. Doria,
  • Eniola E. Olakanmi and
  • Souleymane Fall

24 January 2026

Agricultural production remains highly susceptible to water-related risks, such as drought and flooding. Although hydrologic forecasting systems, such as the National Water Model (NWM), have advanced considerably, their outputs are rarely used for re...

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Hydrology - ISSN 2306-5338