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Hydrology, Volume 12, Issue 11

2025 November - 36 articles

Cover Story: Stream flow was measured and water samples were collected to determine nitrogen, phosphorus, and E. coli concentrations along several tributaries of Jacks Creek and Runyon Creek in Coastal North Carolina, USA. These watersheds, dominated by agricultural land use (Jacks Creek) and urban land use (Runyon Creek), discharge to the nutrient-sensitive Tar–Pamlico Estuary. Concentrations of nutrients and E. coli from both creeks exceeded US EPA thresholds. Remediation is recommended through the implementation of agricultural best management practices—including controlled drainage and nutrient management—in the Runyon Creek Watershed. In the Jacks Creek watershed, construction of stormwater control measures—such as wetlands, bioretention systems, and rainwater harvesting systems, along with diversion of gutter downspouts to open space—is recommended. View this paper
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Articles (36)

  • Feature Paper
  • Article
  • Open Access
1,540 Views
26 Pages

TopEros: An Integrated Hydrology and Multi-Process Erosion Model—A Comparison with MUSLE

  • Emmanuel Okiria,
  • Noda Keigo,
  • Shin-ichi Nishimura and
  • Yukimitsu Kobayashi

20 November 2025

Hydro-erosion is a primary driver of soil degradation worldwide, yet accurate catchment-scale prediction remains challenging because sheet, gully, and raindrop-impact detachment processes operate simultaneously at sub-grid scales. We introduce TopEro...

  • Article
  • Open Access
1,186 Views
28 Pages

Flash Drought Assessment: Insights from a Selection of Mediterranean Islands, Greece

  • Chrysoula Katsora,
  • Evangelos Leivadiotis,
  • Nektaria Papadopoulou,
  • Isavela Monioudi,
  • Efthymia Kostopoulou,
  • Petros Gaganis,
  • Aris Psilovikos and
  • Ourania Tzoraki

18 November 2025

Flash droughts are a significant natural hazard, characterized by rapid onset and potential to cause substantial economic and environmental impacts. This study utilizes ERA5 soil moisture data to identify and define historical flash drought (FD) even...

  • Article
  • Open Access
1 Citations
1,113 Views
21 Pages

17 November 2025

Accurately estimating urban floodwater depth is a critical step in enhancing urban resilience and strengthening disaster prevention and mitigation capabilities. Traditional methods relying on hydrological monitoring stations and numerical simulations...

  • Article
  • Open Access
1,166 Views
21 Pages

Groundwater Recharge Estimation Based on Environmental Isotopes, Chloride Mass Balance and SWAT Model in Arid Lands, Southwestern Saudi Arabia

  • Milad Masoud,
  • Maged El Osta,
  • Jalal Basahi,
  • Burhan Niyazi,
  • Nassir Al-Amri,
  • Michael Schneider,
  • Abdulaziz Alqarawy and
  • Riyadh Halawani

16 November 2025

Estimated groundwater recharge is considered the essential factor for groundwater management and sustainability, especially in arid lands such as the Kingdom of Saudi Arabia (KSA). Consequently, assessing groundwater recharge is a key process for for...

  • Article
  • Open Access
960 Views
16 Pages

16 November 2025

Rain-on-snow (ROS) events profoundly influence mixed rain–snow flooding and the water resource cycle. However, current research regarding ROS events remains predominantly reliant on existing datasets, lacking detailed controlled experiments und...

  • Feature Paper
  • Article
  • Open Access
1,534 Views
16 Pages

15 November 2025

Low-lying coastal plains are increasingly threatened by saltwater intrusion, yet the extent of the phenomenon and the role of coastal dune systems remain unevenly assessed. In the northern Adriatic Sea (NE Italy), salinisation has been documented, bu...

  • Article
  • Open Access
951 Views
15 Pages

Multi-Objective Optimization of the Physical Design of a Horizontal Flow Subsurface Wetland

  • Jhonatan Mendez-Valencia,
  • Carlos Sánchez-López,
  • Eneida Reyes-Pérez,
  • Rocío Ochoa-Montiel,
  • Lucila Marquez-Pallares,
  • Juan Aguila-Muñoz,
  • Fredy Montalvo-Galicia,
  • Miguel Angel Carrasco-Aguilar,
  • Jorge Alberto Sánchez-Martínez and
  • Jorge Arellano-Hernández

14 November 2025

Decontamination of wastewater, industrial effluents, stormwater, and graywater can be carried out through the use of natural or constructed wetlands. In either case, the natural functions of soil, vegetation, and organisms are widely applied for the...

  • Article
  • Open Access
740 Views
26 Pages

Characterization of Hyetograms and Rainfall Patterns in Southern Amazonia

  • Brenda Buose,
  • Daniela Roberta Borella,
  • Frederico Terra de Almeida and
  • Adilson Pacheco de Souza

14 November 2025

The variability of rainfall, mainly convective, in the southern Amazon remains poorly understood due to the limited number of studies examining the relationships between the intensities and durations of rainfall events in this region. This study aime...

  • Article
  • Open Access
696 Views
18 Pages

A Pressure-Impact Approach to Assess Contamination and Risk in Surface Water Bodies

  • Siwar Aydi,
  • Javier Paredes-Arquiola,
  • Rafael J. Bergillos,
  • Abel Solera and
  • Joaquín Andreu

14 November 2025

This study assesses the chemical state of surface water bodies (SWBs) in the Júcar River Basin District (Spain), specifically focusing on contaminants such as nickel, lead, imazalil, and thiabendazole. To identify risky zones, the RREA model w...

  • Article
  • Open Access
921 Views
18 Pages

Mudflow Hazard on Rivers in the Khamar-Daban Mountains (East Siberia): Hydroclimatic and Geomorphological Prerequisites

  • Natalia V. Kichigina,
  • Marina Y. Opekunova,
  • Artem A. Rybchenko and
  • Anton A. Yuriev

12 November 2025

Hydroclimatic and geomorphological prerequisites for mudflow hazard were studied using data on several of the largest flood events in the Khamar-Daban mountain area (Lake Baikal, East Siberia) for the period from 1966 to 2022. The data include flood-...

  • Article
  • Open Access
1 Citations
772 Views
13 Pages

11 November 2025

Timely and accurate monitoring of lakes’ water quality is crucial for assessing regional ecological health and implementing targeted conservation activities. Compared with traditional in situ water quality measurement methods, satellite remote...

  • Article
  • Open Access
1 Citations
991 Views
15 Pages

Chemical and Physical Characterisation of Microplastics Present on Beaches of the Cantabrian Coast, Bay of Biscay (Spain)

  • Uxue Uribe-Martinez,
  • Thomas Maupas,
  • Aritz Lapazaran,
  • Ruben Rodriguez,
  • Olivia Gómez-Laserna,
  • María Ángeles Olazabal,
  • Juan F. Ayala-Cabrera and
  • Alberto de Diego

10 November 2025

We investigated the presence, chemical/morphological characteristics, and distribution of microplastics (MPs, 1–5 mm) in three beaches located at the southeast of the Bay of Biscay, an area where this kind of study is scarce. Sampling was carri...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,005 Views
27 Pages

10 November 2025

Complete sub-hourly rainfall datasets are critical for accurate flood modeling, real-time forecasting, and understanding of short-duration rainfall extremes. However, these datasets often contain missing values due to sensor or transmission failures....

  • Feature Paper
  • Article
  • Open Access
1,027 Views
23 Pages

8 November 2025

Excess concentrations of fecal indicator bacteria, nitrogen, and phosphorus have caused closure of shellfish growing waters, swimming advisories, eutrophication, and impairment of aquatic habitat in the Tar–Pamlico Estuary, North Carolina. Regu...

  • Article
  • Open Access
1,844 Views
20 Pages

The Effect of Urbanization on the Groundwater Availability in the Masingini–Mwanyanya Catchment Forest, Unguja Island, Zanzibar (Tanzania)

  • Said Suleiman Bakari,
  • Suleyman Majaliwa Kyonda,
  • Kombo Hamad Kai,
  • Federica Giaccio,
  • Giuseppe Sappa and
  • Francesco Maria De Filippi

6 November 2025

The Island of Unguja in Zanzibar (Tanzania) has experienced an accelerated urban development growth since the 1990s due to a rapidly increasing population. These rapid land demands put additional stress on the country’s ability to plan urban ce...

  • Article
  • Open Access
953 Views
20 Pages

5 November 2025

With increasing energy demands and environmental pressures, hydropower, as a clean and renewable energy source, has attracted widespread attention for its development and utilization. However, hydropower systems are highly sensitive to climate change...

  • Article
  • Open Access
926 Views
21 Pages

4 November 2025

This study investigates the transport of chloride, a conservative tracer and surrogate for contaminants, in the fractured Brunswick aquifer of northern New Jersey using a dual-porosity MODFLOW-MT3DMS model. Focusing on the First Watchung Mountain reg...

  • Feature Paper
  • Article
  • Open Access
2 Citations
886 Views
23 Pages

3 November 2025

The analysis of changing trends of river runoff and sediment discharge and the exploration of their causes are of great significance for formulating sustainable development measures for river basin systems. Based on methods such as trend test, mutati...

  • Article
  • Open Access
1 Citations
2,016 Views
26 Pages

2 November 2025

A spatiotemporal, multi-task learning (MTL) model for simulating surface water–groundwater (SW-GW) dynamics is developed and applied to the Heihe River Basin, Northwest China. The Transformer-based model (MT-TFT) jointly forecasts surface runof...

  • Article
  • Open Access
1,157 Views
31 Pages

A Novel Water Quality Index (Novel WQI) for the Assessment of Water Body Pollution in a Semi-Arid Gold Mining Area (Bam Province, Burkina Faso)

  • Sidkeita Aissa Nacanabo,
  • Youssouf Koussoube,
  • Nadjibou Abdoulaye Hama,
  • Mohamed Tahar Ammami and
  • Tariq Ouahbi

2 November 2025

Since the 2000s, Burkina Faso has experienced a rapid mining expansion with more than one hundred sites established, leading to increased waste generation often discharged untreated into the environment. Assessing water quality in these areas is ther...

  • Feature Paper
  • Article
  • Open Access
1 Citations
578 Views
22 Pages

Probabilistic Forecast for Real-Time Control of Rainwater Pollutant Loads in Urban Environments

  • Annalaura Gabriele,
  • Federico Di Palma,
  • Ezio Todini and
  • Rudy Gargano

1 November 2025

Advanced wastewater management systems are necessary to effectively direct severely contaminated initial rainwater runoff to the treatment facility only when pollutant concentrations are elevated during the initial flush event, thereby reducing the r...

  • Article
  • Open Access
2,473 Views
24 Pages

31 October 2025

Drought is a critical hazard to agricultural productivity in semi-arid regions such as the Antalya Agricultural Basin of Türkiye. This study assessed agricultural drought from 2001 to 2023 using multiple remote sensing-based indices processed in...

  • Article
  • Open Access
796 Views
35 Pages

31 October 2025

As global climate change intensifies, understanding drought mechanisms is crucial for managing water resources and agriculture. This study employs the Standardized Precipitation–Actual Evapotranspiration Index (SPAEI), Standardized Runoff Index...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,121 Views
25 Pages

31 October 2025

This study focuses on the Alentejo and Algarve regions of southern Portugal, which is characterized by a typical Mediteranean climate. In the Mediterranean region, evaporation plays a significant role in reservoir water budgets. Therefore, estimating...

  • Article
  • Open Access
785 Views
25 Pages

Developing a Groundwater Quality Assessment in Mexico: A GWQI-Machine Learning Model

  • Hector Ivan Bedolla-Rivera and
  • Mónica del Carmen González-Rosillo

30 October 2025

Groundwater represents a critical global resource, increasingly threatened by overexploitation and pollution from contaminants such as arsenic (As), fluoride (F), nitrates (NO3), and heavy metals in arid to semi-arid regions like Mexico. Tradi...

  • Article
  • Open Access
2 Citations
1,483 Views
18 Pages

Tail-Aware Forecasting of Precipitation Extremes Using STL-GEV and LSTM Neural Networks

  • Haoyu Niu,
  • Samantha Murray,
  • Fouad Jaber,
  • Bardia Heidari and
  • Nick Duffield

30 October 2025

Accurate prediction of extreme precipitation events remains a critical challenge in hydrological forecasting due to their rare occurrence and complex statistical behavior. These extreme events are becoming more frequent and intense under the influenc...

  • Article
  • Open Access
2,521 Views
26 Pages

30 October 2025

Understanding urbanization and its impact on flooding and flood risk is crucial to better manage flood risk in the future. This study analyzed land use/land cover changes and how urbanization would impact flooding and flood risk in Kathmandu Valley o...

  • Article
  • Open Access
1,756 Views
21 Pages

29 October 2025

Groundwater level predictive monitoring is necessary to address accelerated aquifer depletion and ensure sustainable management under increasing climatic and anthropogenic pressures. This study uses machine learning approaches to model groundwater le...

  • Article
  • Open Access
2,435 Views
35 Pages

Assessing the Impacts of Land Cover and Climate Changes on Streamflow Dynamics in the Río Negro Basin (Colombia) Under Present and Future Scenarios

  • Blanca A. Botero,
  • Juan C. Parra,
  • Juan M. Benavides,
  • César A. Olmos-Severiche,
  • Rubén D. Vásquez-Salazar,
  • Juan Valdés-Quintero,
  • Sandra Mateus,
  • Jean P. Díaz-Paz,
  • Lorena Díez and
  • Oscar E. Cossio
  • + 1 author

28 October 2025

Understanding and quantifying the coupled effects of land cover change and climate change on hydrological regimes is critical for sustainable water management in tropical mountainous regions. The Río Negro Basin in eastern Antioquia, Colombia,...

  • Article
  • Open Access
1,674 Views
21 Pages

Refined Simulation of Old Urban Inundation and Assessment of Stormwater Storage Capacity Based on Surface–Pipe Network–Box Culvert–River Coupled Modeling

  • Ning Li,
  • Liping Ma,
  • Jingming Hou,
  • Jun Wang,
  • Xuan Li,
  • Donglai Li,
  • Xinxin Pan,
  • Ruijun Cui,
  • Yue Ren and
  • Yangshuo Cheng

28 October 2025

Old urban districts, characterized by complex drainage networks, heterogeneous surfaces, and high imperviousness, are particularly susceptible to flooding during extreme rainfall. In this study, the moat drainage district of Xi’an was selected...

  • Article
  • Open Access
1,623 Views
19 Pages

Mapping Soil Erosion and Ecosystem Service Loss: Integrating RUSLE and NDVI Metrics to Support Conservation in El Cajas National Park, Ecuador

  • Diego Portalanza,
  • Javier Del-Cioppo Morstadt,
  • Valeria Polhmann,
  • Gabriel Gallardo,
  • Karla Aguilera,
  • Yoansy Garcia and
  • Fanny Rodriguez-Jarama

25 October 2025

Mountain protected areas in the tropical Andes experience localized yet severe soil erosion that threatens erosion-regulating services and downstream water–energy security. We mapped soil loss at 30 m using the Revised Universal Soil Loss Equat...

  • Article
  • Open Access
2,138 Views
32 Pages

Current Trends and Future Scenarios: Modeling Maximum River Discharge in the Zhaiyk–Caspian Basin (Kazakhstan) Under a Changing Climate

  • Sayat Alimkulov,
  • Lyazzat Makhmudova,
  • Saken Davletgaliev,
  • Elmira Talipova,
  • Daniel Snow,
  • Lyazzat Birimbayeva,
  • Mirlan Dyldaev,
  • Zhanibek Smagulov and
  • Akgulim Sailaubek

24 October 2025

In the context of intensifying climate change, it is particularly important to assess the transformation of spring floods as a key phase of the hydrological regime of rivers. This study provides a comprehensive analysis of the characteristics of maxi...

  • Article
  • Open Access
738 Views
20 Pages

Seasonal Freshwater Inflows in Cochin Backwater Estuary Inferred from Stable Isotopes and Machine Learning

  • Prasanna K.,
  • Ravi Rangarajan,
  • Fursan Thabit,
  • Prosenjit Ghosh and
  • Habeeb Rahman

24 October 2025

The Cochin Backwater region in Southern India is one of the most dynamic estuaries, strongly influenced by seasonal river runoff and seawater intrusion. This study explores the relationship between monsoonal rains, salinity, and stable isotopic compo...

  • Article
  • Open Access
830 Views
26 Pages

23 October 2025

The present research moves the focus from merely describing epikarst flow to quantifying its natural filtration performance and contaminant retention mechanisms through integrating in situ tracer experiments with controlled laboratory modelling&mdash...

  • Article
  • Open Access
790 Views
24 Pages

Assessing Impacts of Anthropogenic Modification on Surface Soil Moisture Dynamics: A Case Study over Southwest China

  • Chunying Shen,
  • Changrui Qin,
  • Zheng Lu,
  • Dehui Ning,
  • Zhenxiang Zang,
  • Honglei Tang,
  • Feng Pan,
  • Guaimei Cheng,
  • Jimin Hu and
  • Shasha Meng

22 October 2025

Anthropogenic activities are profoundly altering the terrestrial water cycle, yet a comprehensive understanding of their impact on surface soil moisture (SSM) at regional scales remains limited. This study investigates the spatiotemporal dynamics of...

  • Article
  • Open Access
955 Views
16 Pages

22 October 2025

Flood frequency analysis is essential for designing resilient hydraulic infrastructure, but traditional stationary models fail to capture the influence of climate variability and land-use change. This study applies a bivariate logistic model with non...

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Hydrology - ISSN 2306-5338