Water and Sediment Process Variation in Jingjiang River in the Middle Reaches of the Yangtze River and Response Analysis of Flow Capacity of Three Outlets by SHEN Jian, YUAN Song

“…The Jingjiang reach of the middle reaches of the Yangtze River is connected to Dongting Lake through three outlets,forming an extremely complex and far-reaching relationship between the rivers and lakes.The operation of the Three Gorges Project has changed the natural water and sediment process in the Jingjiang River downstream of the dam.This leads to “flattening” flood processes in the main stream,extended middle water period,and an increase in low flow,which has promoted the continuous response of the three outlets to the above water and sediment conditions.Meanwhile,this paper employs a series of long-term measured hydrological consolidation data and river channel terrain observation results from nearly 70 years.Based on this,the response characteristics of the three outlets to the water and sediment variation process of the Jingjiang River are analyzed,and the flow and sediment diversion,river regime,and erosion and sedimentation evolution laws in the entrance area are summarized.The results show that in the same inflow conditions before and after the operation of the Three Gorges Project,the diversion ratio of three outlets decreases,and the sediment diversion corresponds to the sediment from the upstream branch city.Additionally,the sediment diversion ratio continues its gradually increasing trend.After the impoundment and operation of the Three Gorges Reservoir,the riverbed of three outlets is generally in a state of erosion,with a total erosion amount of 51.47 million m³ from 2003 to 2011 and 99 million m³ from 2011 to 2016.The entrance areas have been expanded,but the actual flow capacity has not been significantly improved.…”
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Measurement of remaining storage, rate of siltation, and rate of erosion of the Ahmadu Bello University Farm Lake drainage Basin in Zaria by A Baba, M Akaegbobi, K Schoeneich

“…Thereafter calculated rate of siltation between years 1966 and 2009 as 6,600 m3/y, rate of erosion in the drainage basin during the same period as 0.559 mm/y, and safe yield during 176 days of hydrological dry season as non existing, because after deduction of losses to evaporation calculated as 194,560 m3/y and deduction of 272,700 m3 of environmental reserve - minimum necessary to preserve aquatic wildlife, there is no active storage left. …”
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Floods of 18 and 19 November 2016 in Batouri (East Cameroon): Interpretation of the Hydro-Meteorological Parameters and Historical Context of the Post-Event Survey Episode by Paulin Sainclair Kouassy Kalédjé, Jules-Rémy Ndam Ngoupayou, Alain Fouépé Takounjou, Mireille Zebsa, Felaniaina Rakotondrabe, Joseph Mvondo Ondoa

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The Advantage of Using International Multimodel Ensemble for Seasonal Precipitation Forecast over Israel by Amir Givati, Mashor Housh, Yoav Levi, Dror Paz, Itzhak Carmona, Emily Becker

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Modeling and predicting of the spatial variations Precipitation cores in Iran by hossein naserzadeh, fariba sayadi, meysam toulabi nejad

“…This research was carried out with the aim of understanding the spatial displacement of rainfall nuclei as an effective factor in the future hydrological conditions in Iran. Two types of databases were used to conduct this research. …”
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THE LAKES OF THE ROMANIAN BLACK SEA COAST. MAN-INDUCED CHANGES, WATER REGIME, PRESENT STATE by PETRE GÂŞTESCU, PETRE BREŢCAN, DACIAN CONSTANTIN TEODORESCU

“…The lakes on the Romanian coast line are grouped into two types of genetic depressions, a fact partially reflected in their hydrological and physical-chemical properties – fluvial-marine limans and marine lagoons. …”
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Exploration of Flood Prediction in Watersheds Based on the Fusion Analysis of Remote Sensing Big Data with Multiple Physical Fields by Minming Xu, Yun Ouyang

“…The method can change the problems of cumbersome data processing and basic parameter rate determination in traditional hydrological methods and can find certain regularity through the connection between all related factors. …”
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Estimation of Evapotranspiration and Its Variation Characteristics in Yongji Irrigation Area of Hetao Irrigation District Based on SEBAL Model by LI Yanbin, LIANG Kun, ZHANG Wen'ge

“…Evapotranspiration (ET) is a key link in the hydrological cycle and energy cycle,and accurate estimation of ET is crucial for agricultural water use scheduling and water resources management.In order to establish a quick estimation method of regional ET based on remote sensing technology,this paper selected the Yongji Irrigation Area of the Hetao Irrigation District as the study area.By using Landsat remote sensing images and land use classification results,a SEBAL model was constructed to estimate the daily ET for the 2019 growing season in the Yongji Irrigation Area.Then,the spatial and temporal variation characteristics of ET in the study area and the differences of ET in different land types were analyzed.The results indicate that:① Compared with the FAO P-M formula,SEBAL model estimation results yield a determination coefficient R² of 0.94;the root-mean-square error (RMSE) is 0.43 mm/d,and the relative error (MRE) is 8.62%.The inversion accuracy of the model is higher,which can provide a reasonable ET estimation for the study area.② The average daily ET in the Yongji Irrigation Area shows an unimodal trend during the growing season,with a maximum value of 4.56 mm/d in July and a minimum value of 1.87 mm/d in October,and there are obvious differences in spatial distribution.③ The daily ET of different land use types is as follows:water bodies>arable land>urban and rural land>grassland>wasteland.Overall,the estimation of regional ET based on the SEBAL model can provide a reference for the economical utilization of water resources in irrigation areas.…”
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Influence of flood control structures on the water level in the downstream of the Saigon – Dong Nai river system by I. M. Markova, Phan Khanh Khanh

“…To assess the impact of upstream reservoirs and flood control structures on the water level in the lower reaches of the SG – DN river, hydrological data of the river network were collected and a hydraulic model was developed based on a digital elevation model (DEM) using the software package Mike 11, Mike 21 and Mike Flood.Results. …”
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Bioretention Design Simulation for Efficient Urban Stormwater Reduction by Ega Fajar Wicaksono, Entin Hidayah, Cantika Almas Fildzah

“…In this approach, hydrological techniques use rainfall for a 2-year return period based on the typology of the study area. …”
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Impact of Precipitation and Flow Rate Changes on the Water Quality of a Coastal River by Hassan Pourfallah Koushali, Reza Mastouri, Mohammad Reza Khaledian

“…This paper aims to investigate the effects of natural variables, including precipitation and flow rate, on the quality of the Zarjoub River in Guilan province, Iran. The new hydrological insight in this study is a lack of national research focused on the dual effects of rainfall and flow rate on river water quality in coastal areas along the Anzali Wetland. …”
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Applicability of ERA5 Reanalysis Data in Simulating Water Level of Medium and Small-Scale Reservoirs:a Case Study of Changjiang Reservoir by CHEN Junlai, ZHANG Zhouwen, CHEN Weihua, HU Xubao

“…The water level in front of the reservoir is important observation data for medium and small-scale reservoir basins.The reanalysis of this data provides optional schemes for the simulation of water levels in medium and small-scale reservoirs,but its applicability still needs to be evaluated.This study took the Changjiang Reservoir Basin in Zhongshan City as an example to assess the accuracy of ERA5,ERA5-Land reanalysis precipitation,and potential evapotranspiration data under different time scales.Based on the three-source Xinanjiang model coupled with reservoir water management,this study set up different input scenarios and analyzed the applicability of ERA5,ERA5-Land precipitation,and potential evapotranspiration data in water level simulation of the reservoir.The results show that at the annual,monthly,and daily scales,the two reanalysis precipitation data in the study area are consistent with the observed precipitation,while the consistency of the reanalysis potential evapotranspiration data with the observed evaporation is weaker.In the seven scenarios of water level simulation,the rate-periodic NSE can all reach 0.6 or more,and there are differences in the input during the validation period.The adaptability of ERA5 reanalysis data is better than that of ERA5-Land,and the reanalysis potential evapotranspiration data can be used as an alternative input for the model evaporation data,but the reanalysis precipitation data is not suitable for direct use in the model input.This study can provide a reference for the application of ERA5 and ERA5-Land data in the simulation and forecasting of reservoir water levels with insufficient data and provide a feasible scheme for the construction of reliable hydrological models in medium and small-scale reservoir basins.…”
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Simulation and Strategy for Salinity Control Scheduling in Dongjiang Delta of Pearl River Basin in Severe Drought Year by LIN Zhongyuan, TANG Qi, WANG Fengen, XU Wei, HUANG Pengfei, ZOU Huazhi

“…Based on the river discharge, pondage, and salinity data of the Dongjiang Basin from 2021 to 2022, this paper analyzed the hydrological characteristics and the saltwater intrusion patterns in the Dongjiang Delta. …”
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Regularities of the Development of Coastal Processes on Water Reservoirs of Hydroelectric Power Plants of Belarus by V. E. Levkevich

“…On the basis of the law of conservation of mass and taking into account hydrological features of reservoirs, geological structure of relief and granulometric composition of soils forming the bank, balance mathematical models of development of the equilibrium coastline and the profile of the dynamic equilibrium of the banks that are subjected to processing are developed, criteria for the stability of slopes have been obtained.…”
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Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change by Tayebeh Kiani, Mohsen Pourbashir Hir

“…The Rivers and the Canals are a completely dynamic system and their morphological patterns has been changed continuously over the time, which sometimes lead to erosion and damage to coastal facilities and border displacement. Therefore, its hydrologic behavior should always be considered. Iran has several border rivers with its neighbors that its necessary be studied of wise “the bed change approach. …”
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The Ecological Model of Pastures Zoning of Kurdistan Province Emphasizing on the Climatic Elements of Temperature and Precipitation by Gholamali Mozafari, Farshad Safarpour

“…Pastures are renewable natural resources which provide the grass for the cattle need, adjust the weather and hydrological flows, provide water for aquifer, prevent soil erosion, control pollution, dispel food poisoning, and bring about soil formation through improving soil formation processes. …”
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A new index for extracting built-up land features using Landsat satellite imagery by Jellouli Amine, Chakouri Mohcine, El Hachimi Jaouad, Hajaj Soufiane, Jari Abdessamad, Adiri Zakaria

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New glacier thickness and bed topography maps for Svalbard by W. van Pelt, T. Frank

“…<p>Knowledge of the thickness, volume, and subglacial topography of glaciers is crucial for a range of glaciological, hydrological, and societal issues, including studies on climate-warming-induced glacier retreat and associated sea level rise. …”
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Runoff Prediction and Uncertainty Analysis for Xijiang River Basin Based on CMIP6 Climate Scenarios by WU Huiming, YAN Meng, ZHOU Shuai

“…Based on this, the Xin'anjiang hydrological model (XAJ) is built, and the particle swarm optimization (PSO) algorithm is employed to calibrate and validate the model parameters. …”
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Analysis of Runoff Change and Its Influencing Factors of Miju River Based on Morlet Wavelet Analysis by LI Hongyan, WANG Zhiping, YANG Hua, DONG Xiaohai

“…Since 2011,the annual runoff of the Miju River Basin has been relatively small for 8 consecutive years,and the Miju River is the largest major river into the Erhai Sea,with runoff area and natural runoff accounting for more than 40% of the total flow of the Erhai Sea.Therefore,analyzing the variation characteristics of the annual runoff of Miju River is of great significance to the study of the total water flowing into Erhai Sea.Based on the monitoring data such as flow,precipitation and evaporation of the Liancheng hydrologic station in the basin from 1954 to 2018,this paper studies the change law of runoff cycle and its influencing factors by wavelet analysis.The results show that:The natural annual runoff of Miju River basin in the nearly 65 a decreases with time,with an average annual runoff decrease of 14.35 million m³ per 10 a;The annual runoff is featured with periodic changes of about 9 a,14 a,19 a,and 54 a,which greatly affects the trend of abundance and dryness of annual runoff;There are multiple time scales nesting between the four-season runoff and annual runoff,and the first main period of the four-season and annual runoff is about 54 a;The change trend and fluctuation cycle of annual precipitation and annual runoff of Miju River are similar,with a positive correlation;The annual evaporation has various impact on the annual runoff;The influence of water consumption on runoff in the Miju River Basin is increasing,the conditions of the lower surface are changing more and more,and the relationship between precipitation and runoff varies accordingly,which is one of the main reasons for the significant decrease of runoff in the basin compared with that under same precipitation in the past.…”
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