Article
Engineering, Civil
Xiaoming Guo, Lukai Xu, Lei Su, Yu Deng, Chaohui Yang
Summary: This study identified limitations of eco-flows based on FDCs and redefined ES and ED using DH, finding that DHs performed better in assessing eco-flows. The results demonstrated that the new method using DHs can provide a more accurate assessment of river health.
WATER RESOURCES MANAGEMENT
(2021)
Article
Environmental Sciences
Alexander Ley, Helge Bormann, Markus Casper
Summary: Machine learning algorithms are gradually gaining acceptance for streamflow modelling in the hydrological community. However, due to the unique characteristics of catchment areas, generally valid statements about the modelling behavior of machine learning models are still unclear. In this study, we compared the performance of two machine learning models, RNN and LSTM, with the conceptual hydrological model HBV in the low-land Ems catchment in Germany. The results show that the machine learning models outperform the HBV model for a wide range of statistical performance indices, although there is a decline in performance for low-flows in two sub-catchments. The study also finds that the machine learning models provide a good representation of the water balance, while the HBV model excels in reproducing streamflow dynamics. There is no strong evidence of increasing error from upstream to downstream when applying a routing routine in the machine learning models.
Article
Environmental Sciences
Shenqi Xie, Chen Zeng, Xiong Xiao, Guanxing Wang, Fan Zhang
Summary: This study characterizes the processes of river runoff generation in the Yakou Catchment and highlights the importance of the thickness of the saturated zone and river channel precipitation in determining low flow and quick flow, respectively. The findings provide valuable theoretical references for simulating hydrological processes in permafrost regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Civil
Alexa Marion Hinzman, Ylva Sjoberg, Steve Lyon, Peter Schaap, Ype van der Velde
Summary: This study investigates the impact of permafrost thaw on the storage-discharge relationship in Arctic and sub-Arctic regions. The research demonstrates that thawing permafrost leads to dramatic changes in this relationship, with varying effects depending on the slope of the catchment.
JOURNAL OF HYDROLOGY
(2022)
Article
Chemistry, Multidisciplinary
Angelica Tarpanelli, Alessio Domeneghetti
Summary: The Flow Duration Curve (FDC) is a tool for describing hydrological regimes, relying on historical flow records and ground station data. Investigating the potential of satellite products in providing FDC, it is found that the Near Infrared band can accurately estimate FDC and achieve realistic reconstruction of flow regimes at different locations.
APPLIED SCIENCES-BASEL
(2021)
Article
Water Resources
Mohammad Sharifi, Mohammad Reza Majdzadeh Tabatabai, Seyed Hossein Ghoreishi Najafabadi
Summary: The study focused on the Tar River in Ghazi Station, Tehran Province, evaluating the design discharge needed for flood control structures. It concluded that the average of dominant, effective, and bankfull discharges could be suitable as the design discharge for the river, but flood control structures are unnecessary due to medium frequent flood events occurring in the river.
JOURNAL OF WATER AND CLIMATE CHANGE
(2021)
Article
Environmental Sciences
B. Camenen, N. Gratiot, J-A Cohard, F. Gard, V. Q. Tran, A-T Nguyen, G. Dramais, T. van Emmerik, J. Nemery
Summary: The hydrological dynamics of the Saigon River is influenced by a variety of factors, with this study proposing a low-cost method for estimating river discharge. Seasonal behaviors were observed in both water level and water discharge, with rainfall having little impact on them. Evidence of interactions between precipitation and coastal waters was found.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Zhiwei Wang, Shouqin Sun, Chunlin Song, Genxu Wang, Shan Lin, Silu Ye
Summary: This study analyzed the river flow characteristics and their response to climate change in permafrost regions on the Qinghai-Tibet Plateau. The results showed that high flows in permafrost regions can either rise or fall in the context of global warming, with different sensitivities to temperature, NDVI, precipitation, and rainfall intensity. Different percentile high flows can be used to determine the level of annual flood events. Analyzing different high flows combined with flow duration curves is essential for understanding the hydrological processes in permafrost regions. Prudent utilization of water resources benefits sustainable development.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Ryan M. Riggs, George H. Allen, Jida Wang, Tamlin M. Pavelsky, Colin J. Gleason, Cedric H. David, Michael Durand
Summary: Long-term, continuous, and real-time streamflow records are crucial for understanding and managing freshwater resources. However, a significant portion of global gauge records are discontinuous and lack real-time data. To fill in the gaps, river width observations from satellite imagery have been used to estimate daily discharge at over 2000 gauge locations worldwide. This method improves our ability to monitor and manage river resources.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Engineering, Civil
Atul Kumar Rai, Zafar Beg, Abhilash Singh, Kumar Gaurav
Summary: This study estimated discharge in different reaches of the Ganga River in India using water level data from multiple satellite altimeter missions. By establishing stage-discharge rating curves, monthly discharge of the river was estimated based on the altimeter water level. The analysis showed a good agreement between estimated discharge and in-situ measurements, indicating the effectiveness of the method.
JOURNAL OF HYDROLOGY
(2021)
Article
Water Resources
Benjamin Ewuley Yankey, Charles Gyamfi, Emmanuel Arthur, Benjamin Wullobayi Dekongmen, Patricia Asantewaa-Tannor, John Kwame Tawiah, Laudina Gloria Mends
Summary: The study used remote sensing and SWAT modeling to assess the potential sites for Small Hydropower Systems (SHP) in the UDRB. The results showed that the upper DRB had potential for small hydropower development, with nine potential sites along the river and a combined firm power of 7.89 MW. The highest potential sites were HP1, HP7, and HP4, with estimated annual energy productions of 28.68 GWh, 14.36 GWh, and 12.68 GWh respectively. A cascade hydropower arrangement of sites HP1, HP4, and HP7 along the Upper section of the Densu River is recommended.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Water Resources
Frances M. Iannucci, Joshua Benes, Alexander Medvedeff, William B. Bowden
Summary: The climate of the Arctic region is changing rapidly, impacting permafrost, vegetation communities, and solute transport to the Arctic Ocean. Long-term monitoring of Arctic streams and rivers is essential to understand the ecological changes and trends, revealing unexpected community state changes and biogeochemical trends related to phosphorus enrichment. These findings may have significant implications on Arctic headwater catchments and downstream receiving waters, including the Arctic Ocean.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Jitendra Kr Vyas, Muthiah Perumal, Tommaso Moramarco
Summary: The application of entropy theory in hydrometric measurements establishes a relationship between maximum and mean flow velocities, and a proposed two-steps approach for discharge estimation based on this relationship shows promising results in both Italy and India. The proposed method proves to be a viable alternative to the traditional velocity-area method, providing accurate discharge estimations with high efficiency values.
WATER RESOURCES RESEARCH
(2021)
Article
Water Resources
Wagner Wolff, Sergio Nascimento Duarte
Summary: Flow duration curves (FDCs) provide important information on water resource behavior, geostatistical methods show advantages in predicting FDCs but need to avoid overestimation, especially for low flows.
ADVANCES IN WATER RESOURCES
(2021)
Article
Computer Science, Interdisciplinary Applications
Ryan M. Riggs, George H. Allen, Cedric H. David, Peirong Lin, Ming Pan, Xiao Yang, Colin Gleason
Summary: RODEO algorithm, validated with 456 gauges, accurately estimates river discharge and characterizes the uncertainty of RSQ estimates, enabling data assimilation into hydrologic models.
ENVIRONMENTAL MODELLING & SOFTWARE
(2022)
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)