Article
Computer Science, Interdisciplinary Applications
Seonggyu Park, Jaehak Jeong, Elizabeth Motter, Ryan T. Bailey, Colleen H. M. Green
Summary: This article introduces APEXMOD, an open-source QGIS plugin that facilitates the integration of a MODFLOW grid into the APEX watershed model. APEXMOD is developed as a Python tool that connects APEX, MODFLOW, and RT3D-Salt, enabling a dynamic linkage between these models. The plugin includes modules for preprocessing, model configuration, and post-processing to prepare inputs, control simulation options, and visualize and analyze outputs. A case study in the Animas River watershed demonstrates the capabilities of APEXMOD.
ENVIRONMENTAL MODELLING & SOFTWARE
(2023)
Article
Engineering, Civil
Goabaone J. Ramatlapeng, Eliot A. Atekwana, Loago Molwalefhe, Kopo Oromeng
Summary: The study measured the concentrations of various solutes in the Okavango River at different time intervals over the course of a year. It was found that anomalous increases in solute concentrations were primarily caused by dissolution and mobilization of salts stored in floodplains and islands, as well as from remnant evaporated flood water of higher salinity. The transfer of solutes during pulse flooding and the rainy season plays a crucial role in maintaining the Delta's fresh surface water resources.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Sujan Pal, Francina Dominguez, Pablo Bollatti, Steven P. Oncley, Yi Yang, Javier Alvarez, Carlos M. Garcia
Summary: This study investigates the impact of land cover changes from perennial crops to annual soy in central Argentina on water and energy fluxes. Results show differences in evapotranspiration, sensible heat, and soil temperature between soy and alfalfa, with long-term simulations indicating distinct hydrological processes at the two sites. Shifts in land cover are likely linked to observed changes in streamflow and water table depth over time, with a notable increase in the Bowen ratio due to a shift from latent heat to sensible heat partitioning.
WATER RESOURCES RESEARCH
(2021)
Article
Environmental Sciences
Chinchu Mohan, Tom Gleeson, Tara Forstner, James S. S. Famiglietti, Inge de Graaf
Summary: The importance of ecosystem services in water resources management has led to a focus on environmental-flows requirements for moving waters. However, current management practices often overlook the contribution of groundwater and fail to consider its importance in environmental flows. This study presents two methods for estimating groundwater environmental flow contributions, one based on groundwater and the other on surface water. The methods were tested in British Columbia, Canada and showed comparable results, suggesting their potential applicability in data-scarce, hydrologically complex landscapes globally.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Civil
Shuyuan Wang, Dennis C. Flanagan, Bernard A. Engel, Na Zhou
Summary: This research explored the quantitative impacts of subsurface hydrologic conditions on sediment transport capacity in rills, aiming to improve the estimation of an existing transport capacity model. The study conducted 216 rill flow experiments, showing significant increases in sediment transport capacity from free drainage to saturation conditions, with differences increasing with greater water discharge rates and slope gradients. Small increases were observed from saturation to the 10 cm seepage condition with relatively stable differences. Adjustments to water discharge rates improved predictions of sediment transport capacity.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Behzad Ghanbarian, Yashar Mehmani, Brian Berkowitz
Summary: This study investigates the influence of pore-wall roughness on contaminant migration through particle tracking simulations and analyzes the resulting arrival time distributions using the CTRW approach. The results show that pore-wall roughness has a significant impact on the parameters t(1) and D, while the Peclet number has a greater impact on v and D.
WATER RESOURCES RESEARCH
(2023)
Article
Engineering, Civil
A. E. Brookfield, H. Ajami, R. W. H. Carroll, C. Tague, P. L. Sullivan, L. E. Condon
Summary: Over the past decades, hydrologic models have evolved from independent models to integrated models that can capture the entire terrestrial hydrologic cycle. These models have expanded to include various biogeochemical processes, sedimentation and erosion, human activities, and atmospheric processes. The development of these models has been driven by advancements in computing power, data availability, and understanding of the processes. Challenges include selecting appropriate models among many options and obtaining necessary data for parameterization and calibration. However, advancements in technology and data assimilation provide new ways to address these challenges. Furthermore, computational platforms and machine learning techniques support the use of larger and more complex models. It is important to develop accessible models that meet the needs of all users, not just researchers. Diverse modeling platforms should consider user needs, data availability, and computational resources.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Taja Verovsek, Mitja Janza, David Heath, Ariana Sustaric, Helena Prosen, Ester Heath
Summary: This study investigated the occurrence and potential sources of drug residues in an urban aquifer using water analysis and solute transport modeling. Samples were collected from wastewater, aquifer-recharging river, and groundwater sources, and analyzed for residues of licit drugs, medications of abuse, and illicit drugs using LC-MS/MS. Nicotine, cotinine, trans-3-hydroxycotinine, and benzoylecgonine were the most commonly detected residues in groundwater. Solute transport modeling was used to predict the spatial distribution of drug residues and their sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Shuyuan Wang, Dennis C. Flanagan, Bernard A. Engel, Madeline M. McIntosh
Summary: The study investigated the characteristics of sediment selectivity and transport rates under different subsurface hydrologic conditions in small laboratory flume channels. Results showed that the fraction of coarse-sized particles increased with increasing seepage head conditions. The determination of sediment transport capacity should consider both dynamic and spatial equilibrium conditions, with differences observed between free drainage and saturation conditions for the sediment transport capacity values.
Article
Water Resources
Beatrice Gatto, Claudio Paniconi, Paolo Salandin, Matteo Camporese
Summary: Integrated surface-subsurface hydrological models are increasingly used for contaminant transport assessment, but the subsurface solute transport solvers in these models can be affected by numerical dispersion errors. The study used the CATHY model to assess the impacts of numerical dispersion on the simulation of coupled surface-subsurface solute transport. Tests showed that numerical dispersion errors can be controlled by keeping the grid Peclet number sufficiently small.
ADVANCES IN WATER RESOURCES
(2021)
Article
Engineering, Civil
Kun Zhang, Anthony J. Parolari
Summary: The study investigates the subsurface fate of stormwater infiltration enhanced by green infrastructure (GI) and its impact on the overall water balance. A physically based hydrologic model is developed and applied to a sewershed near Milwaukee, WI, to quantify the partitioning of infiltrated stormwater. The findings show that GI implementation can reduce surface runoff and peak flow in urban sewer systems, but its impact on rainfall-derived inflow and infiltration (RDII) is relatively small.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Theodore D. Eyster, Mark S. Johnson, Sarah M. Yarnell, Christopher S. Lowry
Summary: Dam removal is becoming more common as people seek to restore the environmental conditions created by dams. However, limited studies have been done on the effects of dam removal on meadow ecosystems. This study used a groundwater model to assess the impact of dam removal on groundwater and meadow systems in Van Norden Meadow in California. The results showed that dam removal had a slight decrease in the water table of the lower meadow and led to changes in baseflow drainage and evapotranspiration.
WATER RESOURCES MANAGEMENT
(2023)
Article
Engineering, Civil
Xuan Yu, Zexuan Xu, Daniel Moraetis, Nikolaos P. Nikolaidis, Franklin W. Schwartz, Yu Zhang, Lele Shu, Christopher J. Duffy, Bingjun Liu
Summary: Submarine groundwater discharge significantly impacts coastal waters, but its variability is often challenging to compare due to various factors. Research on Crete Island in the Mediterranean Sea showed that fresh SGD contributes substantially to water flow into the Mediterranean, influenced by river mouths and precipitation.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Civil
Mouna Chaguer, Sylvain Weill, Philippe Ackerer, Frederick Delay
Summary: This study proposes an approach, based on the NIHM model, to reduce numerical problems and computational cost in solute transport models by reducing the dimensionality of flow and transport problems. Through experiments with various synthetic test cases, the accuracy and computational efficiency of the proposed model were examined, demonstrating its suitability for predicting solute transport behaviors in shallow subsurface systems and its potential applications in groundwater quality management.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Tianwei Wang, Kexin Zhang, Hailong Li, Yan Zheng, Manhua Luo, Zhenzhong Zeng, Shengchao Yu, Chengji Shen, Jiu Jimmy Jiao
Summary: Previous studies assumed that seepage-faces on tidal flats have only one exit point, but our numerical simulations show that multiple seepage-faces can occur on a two-dimensional vertical, homogeneous transect of a tidal flat. These seepage-faces are separated by four unsaturated beach surface segments, resulting from salinity-variation induced density-dependent flow. The entire aquifer beneath the tidal flat is occupied by seawater, forming a barrier that prevents inland fresh groundwater from horizontally discharging towards the sea, resulting in freshwater discharge mainly occurring near the high tide mark, in contrast to traditional results.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)