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Hydrology, Volume 12, Issue 9

2025 September - 23 articles

Cover Story: Stream temperatures are expected to increase with ongoing air temperature changes attributed to climate variability, yet the influence of physical–environmental variables on stream temperature is less well-known. Changes in stream thermal sensitivity, maximum and minimum stream temperatures, and correlation between solar radiation and summer temperature increases were evaluated over a six-year period along a 12 km mainstem through forest, agriculture, and urban landscapes. In agricultural areas with 57% effective shade (ES), solar radiation was the main heating factor, while aspect and tributary conditions were more significant in forest reaches with over 84% ES. In urban areas with 79% ES, stream temperatures were cooler, with streambank height and increased streamflow attributed to groundwater inflow being the primary cooling factors. View this paper
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Articles (23)

  • Article
  • Open Access
3 Citations
2,663 Views
25 Pages

20 September 2025

Climate change affects streamflow through changes in precipitation, temperature, and extreme weather events. These changes will impact water resource availability significantly. Thus, understanding the impacts of climate change on hydrology is essent...

  • Article
  • Open Access
3 Citations
1,869 Views
25 Pages

Spatiotemporal Trends of Precipitation and Natural Streamflow in the Upper Yangtze River Basin from 1951 to 2020

  • Yiming Ma,
  • Zhi Xu,
  • Zhiqiang Dong,
  • Hui Liu,
  • Xichao Gao,
  • Xiang Cao,
  • Yuchen Li,
  • Lili Liang,
  • Zhiyong Yang and
  • Hongchang Hu
  • + 3 authors

19 September 2025

The Yangtze River Basin is vital to China’s water security and flood management yet lacks a basin-wide quantitative assessment of long-term hydroclimatic changes. This study uses the high-resolution CMFD 2.0 dataset and the VIC model to evaluat...

  • Article
  • Open Access
5 Citations
1,682 Views
41 Pages

19 September 2025

Based on long-term series of observations of water flow of 22 small and medium-sized rivers in the forest-steppe and steppe east of the East European Plain, an analysis of its trend changes in 1961–2022, i.e., in the time interval of the Anthro...

  • Feature Paper
  • Article
  • Open Access
3 Citations
1,640 Views
25 Pages

Evaluating Country-Scale Irrigation Demand Through Parsimonious Agro-Hydrological Modeling

  • Nike Chiesa Turiano,
  • Marta Tuninetti,
  • Francesco Laio and
  • Luca Ridolfi

18 September 2025

Climate change is expected to reduce water availability during cropping season, while growing populations and rising living standards will increase the global water demand. This creates an urgent need for national water management tools to optimize w...

  • Feature Paper
  • Article
  • Open Access
1,728 Views
23 Pages

18 September 2025

Wastewater overflows (WOs) are a growing concern for water quality and ecological health in urban estuaries. This study provides a robust water quality and ecological assessment of WOs from four pump stations discharging into the Waimea Estuary, Aote...

  • Article
  • Open Access
3 Citations
2,648 Views
33 Pages

16 September 2025

This study describes the challenges and solutions encountered when developing a high-resolution, process-based hydrological model of the Adige River Lowland Basin (ARLB), a flat, intensively managed agricultural region in northeastern Italy. The mode...

(This article belongs to the Section Hydrological and Hydrodynamic Processes and Modelling)
  • Article
  • Open Access
4 Citations
2,809 Views
23 Pages

Machine Learning Approaches for Simulating Temporal Changes in Bed Profiles Around Cylindrical Bridge Pier: A Comparative Analysis

  • Ahad Molavi,
  • Fariborz Ahmadzadeh Kaleybar,
  • Namal Rathnayake,
  • Upaka Rathnayake,
  • Mehdi Fuladipanah and
  • Hazi Mohammad Azamathulla

15 September 2025

Submerged vanes offer a promising solution for reducing scour depth around hydraulic structures such as bridge piers by modifying near-bed flow patterns. However, temporal changes in bed profiles around a cylindrical pier remain insufficiently quanti...

(This article belongs to the Special Issue Advances in Catchments Hydrology and Sediment Dynamics (Second Edition))
  • Article
  • Open Access
3 Citations
4,070 Views
33 Pages

Hydrochemical Variability in Karst Hypothermal Mineral Springs of Greece

  • Nerantzis Kazakis,
  • Vasiliki Stavropoulou,
  • Maria Margarita Ntona,
  • Christos Pouliaris,
  • Maria Papailiopoulou,
  • Eleni-Anna Nanou,
  • Apostolis Tsoutanis,
  • Dimitra Lambropoulou and
  • Eleni Zagana

13 September 2025

In Greece, the geodynamics of karst hypothermal–mineral springs, in which often shallow fresh groundwater is intermixed, is not well known. This study aims to investigate the monthly hydrochemical variability of three karst hypothermal mineral...

(This article belongs to the Special Issue Groundwater Pollution: Sources, Mechanisms, and Prevention (Second Edition))
  • Review
  • Open Access
3 Citations
3,930 Views
26 Pages

Nature-Based Approaches for Managing Bioavailable Phosphorus in Aquatic Ecosystems

  • Marcela Pavlíková,
  • Klára Odehnalová,
  • Štěpán Zezulka,
  • Eliška Maršálková,
  • Adéla Lamaczová and
  • Blahoslav Maršálek

10 September 2025

High levels of phosphorus cause eutrophication, leading to water blooms and making the water undesirable in aquatic environments. Surface water pollution by phosphorus (P) is caused by both point and diffuse sources. Despite the recent technological...

  • Article
  • Open Access
1,595 Views
30 Pages

Climate Change and Its Potential Impact on the Conservation of Wooden Pole Dwellings in Lake Bolsena: Insights from Climate Proxy Data and High-Frequency Water Monitoring

  • Swati Tamantini,
  • Maria Cristina Moscatelli,
  • Francesco Cappelli,
  • Barbara Barbaro,
  • Egidio Severi,
  • Federica Antonelli,
  • Giulia Galotta,
  • Marco Ciabattoni and
  • Manuela Romagnoli

10 September 2025

This study examines the impact of recent climatic trends on the preservation of submerged wooden structures at the Gran Carro archaeological site in Lake Bolsena, Italy. Climatic data from the Bolsena Meteorological Station were analysed alongside in...

  • Article
  • Open Access
1 Citations
1,613 Views
21 Pages

8 September 2025

This study presents an assessment of hydrological diversity (hydrodiversity) in Rio Grande do Norte, Brazil, aiming to identify potential correlations between hydrodiversity and hydrological features of geoheritage. The methodology applied a quantita...

  • Article
  • Open Access
1,917 Views
14 Pages

Proposal for a Water Quality Index for Supplying Rural Communities in the Brazilian Federal District

  • Eduardo C. Oliveira-Filho,
  • Daphne H. F. Muniz,
  • Elizabeth C. M. Gonçalves and
  • Juaci V. Malaquias

6 September 2025

The environmental characterization of a given region is fundamental for decision-making by public administrators and, consequently, for sustainable development. Regarding water quality, establishing the use of this resource is a priority, as specific...

(This article belongs to the Section Surface Waters and Groundwaters)
  • Article
  • Open Access
3 Citations
2,595 Views
12 Pages

Simulating the Porosity Reduction in a Permeable Reactive Barrier–Aquifer System Using THMC Software

  • Thi-Tuyet-Han Nguyen,
  • Heejun Suk,
  • Ching-Ping Liang and
  • Jui-Sheng Chen

4 September 2025

A permeable reactive barrier (PRB) containing zero-valent iron (ZVI) is an in situ groundwater remediation technology that passively intercepts and treats contaminated groundwater plumes. Over time, secondary mineral precipitation within the PRB dimi...

(This article belongs to the Section Surface Waters and Groundwaters)
  • Feature Paper
  • Article
  • Open Access
2 Citations
3,574 Views
17 Pages

Impact of Grated Inlet Clogging on Urban Pluvial Flooding

  • Beniamino Russo,
  • Viviane Beiró,
  • Pedro Luis Lopez-Julian and
  • Alejandro Acero

2 September 2025

This study aims to analyse the effect of partially clogged inlets on the behaviour of urban drainage systems at the city scale, particularly regarding intercepted volumes and flood depths. The main challenges were to represent the inlet network in de...

  • Feature Paper
  • Article
  • Open Access
2,263 Views
22 Pages

1 September 2025

Stream temperatures are expected to increase with warming air temperatures, yet the extent and aquatic health impacts vary significantly across heterogeneous landscapes. This study was conducted in a 3360-ha multi-land-use watershed in the Pacific No...

  • Article
  • Open Access
2 Citations
1,922 Views
27 Pages

31 August 2025

This work aims at improving the accuracy of ensemble streamflow forecasts at short-to-medium ranges with the conditional bias-penalized regression (CBPR)-aided Meteorological Ensemble Forecast Processor (MEFP) and streamflow data assimilation (DA). T...

(This article belongs to the Special Issue New Perspectives in the Flood Forecasting Chain (Weather Prediction, Rainfall-Runoff Modeling, and Communication with Stakeholders), Second Edition)
  • Article
  • Open Access
3 Citations
3,995 Views
22 Pages

High-Resolution Bathymetric Survey and Updated Morphometric Analysis of Lake Markakol (Kazakhstan)

  • Askhat Zhadi,
  • Azamat Madibekov,
  • Serik Zhumatayev,
  • Laura Ismukhanova,
  • Botakoz Sultanbekova,
  • Aidar Zhumalipov,
  • Zhanar Raimbekova,
  • María-Elena Rodrigo-Clavero and
  • Javier Rodrigo-Ilarri

29 August 2025

Accurate and up-to-date morphometric data on lakes are crucial for hydrological modeling, ecosystem monitoring, and sustainable water resource management. This study presents the first centimeter-scale, high-resolution bathymetric model of Lake Marka...

(This article belongs to the Special Issue Lakes as Sensitive Indicators of Hydrology, Environment, and Climate)
  • Article
  • Open Access
2 Citations
2,237 Views
19 Pages

Assessment of Satellite Precipitation Products in an Andean Catchment: Ambato River Basin, Ecuador

  • Pablo Arechúa-Mazón,
  • César Cisneros-Vaca,
  • Julia Calahorrano-González and
  • Mery Manzano-Cepeda

28 August 2025

Accurate precipitation data are essential for hydrological planning in mountainous regions with sparse opportunities for observation, such as the Ambato River basin in Ecuador. In this study, CHIRPS and IMERG satellite precipitation products were com...

(This article belongs to the Special Issue Advances in the Measurement, Utility and Evaluation of Precipitation Observations)
  • Article
  • Open Access
5 Citations
2,937 Views
16 Pages

Zoning of the Territory of Southern Kazakhstan Based on the Conditions of Groundwater Availability for Watering Pasture Lands

  • Vladimir Smolyar,
  • Dinara Adenova,
  • Timur Rakhimov,
  • Rakhmatulla Ayazbayev,
  • Gulnura Nyssanbayeva and
  • Almagul Kerimkulova

28 August 2025

In the arid and semi-arid climate of Southern Kazakhstan, groundwater is the primary and most resilient source of water for pasture irrigation. This study provides an integrated assessment of the predicted, natural, and operational groundwater resour...

(This article belongs to the Section Soil and Hydrology)
  • Article
  • Open Access
3 Citations
1,424 Views
14 Pages

28 August 2025

The proper development of groundwater resources is very important in many parts of the world. Its planning requires mathematical simulation of groundwater flows. Simulation can be either analytical or numerical. Analytical tools, when available, requ...

(This article belongs to the Section Surface Waters and Groundwaters)
  • Article
  • Open Access
2 Citations
2,259 Views
23 Pages

Anthropogenic River Segmentation Case Study: Bahlui River from Romania

  • Nicolae Marcoie,
  • Ionuț Ovidiu Toma,
  • Șerban Chihaia,
  • Tomi Alexandrel Hrăniciuc,
  • Daniel Toma,
  • Cătălin Dumitrel Balan,
  • Elena Niculina Drăgoi and
  • Mircea-Teodor Nechita

25 August 2025

This manuscript introduces a river segmentation method and explores the impact of human interventions through a long-term study of total nitrogen, total phosphorus, chemical oxygen demand, and biochemical oxygen demand. An indicator linking parameter...

(This article belongs to the Topic Climate Change and Human Impact on Freshwater Water Resources: Rivers and Lakes)
  • Article
  • Open Access
7 Citations
3,517 Views
28 Pages

24 August 2025

Floods are among the most devastating natural disasters; predicting their depth and extent remains a global challenge. Machine Learning (ML) models have demonstrated improved accuracy over traditional probabilistic flood mapping approaches. While pre...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,760 Views
22 Pages

Integrative Runoff Infiltration Modeling of Mountainous Urban Karstic Terrain

  • Yaakov Anker,
  • Nitzan Ne’eman,
  • Alexander Gimburg and
  • Itzhak Benenson

22 August 2025

Global climate change, combined with the construction of impermeable urban elements, tends to increase runoff, which might cause flooding and reduce groundwater recharge. Moreover, the first flash of these areas might accumulate pollutants that might...

(This article belongs to the Special Issue The Influence of Landscape Disturbance on Catchment Processes)
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Hydrology - ISSN 2306-5338