Water Quality Evaluation and Comparison of Provincial Assessment Sections Based on Evaluation Method by Entropy-Weighted Cloud Model by MA Congcong, LIU Dengfeng, HUANG Qiang, YANG Zhiyong, PAN Baozhu, LIN Mu

“…,Weihe River,Hanjiang River,and Danjiang River.Specifically,we evaluate the environmental quality of surface water in 40 cross-sections of the three rivers using the above two methods.The results reveal that the water quality in the study area is good,and the water quality in more than 70% of the sites reaches Class III.The seriously polluted cross-sections are mainly located in the tributaries of Weihe River,and the main pollutants are chemical oxygen demand (COD) and ammonia nitrogen.…”
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PROSPECTS AND CHALLENGES OF RESCUING THE SHRINKING LAKE CHAD THROUGH THE UNITED NATIONS’ GREEN CLIMATE FUND by DAIYABU HASSAN MUHAMMAD

“…The most viable plan is the idea of an inter-basin water transfer (IBWT), developed by the Italian Engineering Company Bonfica which involves diverting about 4% of the waters of the tributaries of River Bongi in the Democratic Republic of Congo (DRC) that discharge into the Atlantic Ocean through a series of canals and dams to River Chari (that feeds the Lake) in the Central African Republic (CAR). …”
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Study on River System Flood Forecasting Scheme for Longtan Hydropower Station Interval in Hongshui River by DU Yong, FU Yupeng, WEI Yongjiang, LI Zongtai

“…Longtan Hydropower Station is a flood control project in the Pearl River Basin,but there is currently a lack of a comprehensive river system flood forecasting scheme.In order to give full play to the flood control and storage function of Longtan Hydropower Station,tributary control stations such as Leigongtan,Moyang,Pinglihe,Pinghu,and Xianrenqiao are selected,and the key areas of concern are determined through the analysis of important sub-intervals.The river system flood forecasting scheme for the Longtan Hydropower Station interval is constructed by using the Xin'an River three-source runoff generation model,three-source lag routing convergence model,and Maskingen convergence algorithm.The research results show that the proportion of the maximum inflow flood volume of Longtan Hydropower Station is usually in uncontrolled intervals,followed by the tributaries in Guizhou Province (Mengjiang River,Bawang River,Caodu River,and Liudong River),which are the focus of flood forecasting.The total average relative peak flow error and the average relative flood volume error in the river system flood forecasting scheme are both 10%,and the average deterministic coefficients are above 0.75.The overall results are relatively accurate.Therefore,the river system flood forecasting scheme for the Longtan Hydropower Station interval can be applied to real-time flood operation forecasting,and it lays a solid foundation for further improving the “forecast,early warning,rehearsal,and contingency plan” capability.…”
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Design of a Water Quality Monitoring Network on the Zimkan River in Kermanshah by Iraj Jabbari

“…According to vulnerability of reaches, nine monitoring locations were suggested at three situations: the confluence of tributaries which are subjected to intense human interference; The effect of two main branches of Zimkan in where they are close together at the end of catchment; and before and after the entrance of the main pollutant that it is possible to measure amount of their pollution. …”
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Under the bridge: marking sites prove the presence of Eurasian otter Lutra lutra in the Poljanska Sora River valley, Slovenia by Rudi Kraševec, Aleksander Trajbarič, Urša Fležar

“…To confirm the presence of the species in the Slovenian Pre-Alps, we searched for otter scat – spraint, on six tributaries to the Poljanska Sora River of Polhograjsko hribovje, the Pre-Alpine mountains around Polhov Gradec. …”
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Copula-based Wetness-Dryness Encountering Analysis of Upstream Runoff in the Pearl River Delta by ZHANG Zhaoyi, HE Yanhu, LIN Zhuliang, CHEN Xiaohong

“…Study on the wetness-dryness encountering of the main tributaries of the Pearl River (i.e.,the West River (WR),North River (NR) and East River (ER)) under the changing environment,is conducive to the allocation and regulation of water resources in the Pearl River Delta(PRD) during the dry season to ensure the water supply security of the PRD city cluster.Based on the monthly average inflow of the WR,NR and ER,the Copula functions were used to construct the two-dimensional and three-dimensional joint distribution of the inflow of the three rivers at the annual,flood and dry period scales,and the laws of the wetness-dryness encountering of the three rivers were explored.The results show that the Frank Copula function can fit the two-dimensional and three-dimensional joint distribution of the upstream inflow better.The probability of synchronized wetness-dryness two-dimensional combinations of WR,NR and ER are higher when compared to that of the three-dimensional combination of wetness-dryness.The 3-dimensional wetness-dryness encounter combinations of “extreme dryness-extreme dryness-more dryness” and “extreme dryness-more dryness-more dryness” are more likely to happen in dry years.The upstream inflow under the 3-dimensional wetness-dryness encounter combinations of “extreme dryness-extreme dryness-more dryness” and “extreme dryness-more dryness-more dryness” are less during the dry season,which would pose greater challenge for the cities water supply in the PRD.…”
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An integrative approach to a revision of the freshwater mussel genus Songkhlanaia (Bivalvia, Unionidae), with the description of a new species by Ekgachai Jeratthitikul, Chirasak Sutcharit, Pongpun Prasankok

“…Furthermore, based on the current data, these three species are recognized as endemic and are restricted to disjunct biogeographic areas in Indochina: S. tamodienica in the Songkhla Lake Basin in southern Thailand, S. moreleti in the Tonle Sap and Lower Mekong basins, and S. songkhramensis sp. nov. in the Songkhram Basin and its nearby tributaries of the Middle Mekong Basin.…”
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Karyotype uniformity in populations of the endemic Hemiancistrus fuliginosus (Loricariidae: Hypostomini) collected in the upper and middle Uruguai River by Jocicléia Thums Konerat, Vanessa Bueno, Ana Luiza de Brito Portela-Castro, Isabel Cristina Martins-Santos, Vladimir Pavan Margarido

“…In this study, cytogenetics analyzes in four populations of H. fuliginosus from tributaries of the Uruguai Riverrevealed 2n = 56 chromosomes (30m + 18sm + 6st + 2a) for all populations. …”
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Harpacticoid assemblages (Copepoda: Harpacticoida) in the hyporheic zone of four streams in central Slovenia by Nataša Mori, Anton Brancelj

“…The sampling was conducted in 2002 at 12 locations distributed at a distance of approximately 1 km along each stream including tributaries, at a depth of 30–60 cm in the wetted channel (three sites per location) and depths from 65 to 160 cm on the stream banks (one site per location) using a Bou-Rouch pump. …”
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A Hidden Markov Model Applied to the Daily Spring Precipitation over the Danube Basin by Constantin Mares, Ileana Mares, Heike Huebener, Mihaela Mihailescu, Ulrich Cubasch, Petre Stanciu

“…The stations are situated in localities crossed by the Danube or situated on the principal tributaries. The number of hidden states has been determined by means of BIC values. …”
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Supervisory Monitoring Technology System for Key Drinking Water Sources in Guangdong-Hong Kong-Macao Greater Bay Area by CUI Fan, KOU Xinyue, FENG Youbin, XIE Yuning, HE Yingqing, ZHENG Ning

“…In order to resolve the contradiction between the high demand for water resources,water ecology and water environment in the Guangdong-Hong Kong-Macao Greater Bay Area (GBA) and the insufficient supervision capabilities in the water conservancy industry,and achieve the transformation from passive management to active management of key drinking water sources in the GBA,this paper carries out supervisory monitoring of key drinking water sources through remote sensing macro monitoring,UAV cruise monitoring,fixed-point monitoring and other intelligent monitoring technology system.The results show that:①After application of a supervisory monitoring technology system for key drinking water sources,the full-coverage,dynamic and quasi-real-time monitoring of 35 key water sources in the GBA is realized,and the risk sources and water problems can be identified efficiently.②For identifying five suspected risk sources in water source areas,namely construction projects,key river (reservoir) tributaries,temporary shipping stops,material stacking places,agricultural production activities by remote sensing macro monitoring and UAV cruise monitoring,the accuracy rate is 65.7%.③For the chlorophyll a and COD_Mnmonitoring of the water source of main Guangzhou-Dongguan-Huizhou Dongjiangbei River by remote sensing macro monitoring and artificial fixed-point monitoring during the same period,the monitoring results of the two technical means are in good agreement.Therefore,with application of the technology system in supervision and management of key drinking water sources,the smart water conservancy supervision and business management are deeply integrated,and the effective technical means for supervision and management are available.…”
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Spatial and Temporal Distribution of Sand Mining in Poyang Lake and Its Impact on Lake Basin Morphology Based on Remote Sensing Images by LIU Jiahao

“…The results show that: ① sand mining vessels were mainly distributed in the north lake part of Poyang Lake from 2000 to 2006, and the number of sand mining vessels plummeted in 2008 due to the impact of the banning policy, and 2016 was the peak of sand mining activities, in which the policy regulation is the main factor for the change of spatio-temporal distribution and number and scale of sand mining vessels in Poyang Lake from 2000 to 2021; ② the human sand mining activities have affected to a certain extent the hydrological sediment balance of Poyang Lake to a certain extent; ③ sand mining activities led to a decrease in the beach area in the inlet channel of Poyang Lake and Songmen Mountain area, while the net increase in the beach area in the southeast area of Tangyin was about 7.95 km², mainly due to siltation caused by the spreading of sediments from inlet tributaries of the lake. This study not only assesses the effectiveness of the regulation of sand mining activities in Poyang Lake in recent years, but also provides a reference for the regulation of sand mining activities in similar waters and the assessment of its effectiveness.…”
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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

“…Regarding limans, we would mention the largest one – Babadag, grafted into the valley of the two Northern Dobrogea rivers, Taiţa and Teliţa, situated on the western side of the Razim-Sinoie lagoon (the largest lacustrine complex in Romania); Taşaul, initially located at the mouth of the Casimcea River, flows into the Black Sea; Techirghiol, after the conflence of the two tributaries, Urlichioi (Derea) and Biruinţa; Tatlageac, at the end of the Dulceşti (Tatlageac) Valley, and Mangalia, in the Albeşti Valley. …”
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Study on Irrigation Water Quality in the Rift Valley Areas of Awash River Basin, Ethiopia by Zeyede Aregahegn, Mulate Zerihun

“…This study aimed to evaluate the water quality of the Awash River and its tributaries in the basin used for irrigation purposes. …”
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A human geography analysis of the evolution of the urban morphology of ancient Foshan city from the perspective of Cantonese trading culture by Shaobin Wang, Ye Hou, Weihui Zhang, Cheng Liao, Rongyi Wang

“…The study reveals that since the Northern Song Dynasty, the river area has decreased, while the number of tributaries has increased and extended further inland. …”
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Seasonal Variations of Phosphorus Species in the Overlying and Pore Waters of the Tuohe River, China by Qing Xu, Xiaoping Yu, Yafei Guo, Tianlong Deng, Yu-Wei Chen, Nelson Belzile

“…Overlying sediment and pore waters were collected in summer and winter at upstream (Jintang) and downstream (Neijiang) sites of the Tuohe River, which is one of the five largest tributaries of the Yangtze River in China. Phosphorus species, including soluble reactive phosphorus (SRP), soluble unreactive phosphorus (SUP), and total dissolved phosphorus (TDP), and some diagenetic constituents including dissolved Fe(II), Mn(II), and sulfide in overlying and pore waters, were measured systematically. …”
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Trade in floodplain medieval settlements of the Lower Kama region in the XII–XIV centuries (based on the finds of metal mirrors) by Rudenko Konstantin A., Kazakov Evgeniy P.

“…The basis for this study was a collection of fragments of metal mirrors found on the settlements, located in the floodplain of the Kama River and its tributaries. These are the settlements on Semenovsky Island, settlements – Komintern III, Laishevo, Murzikha. …”
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MINERALOGICAL AND GEOCHEMICAL FEATURES OF HEAVY CONCENTRATES FROM CREEKS OF THE NORTHWESTERN END OF THE OKHOTSK TERRANE (KHABAROVSK KRAI) by М.А. Pavlova, D.I. Smirnov, D.А. Guskov, S.V. Petrov, M.A. Rassomakhin, A.Yu. Nefyodova

“…The work presents the mineralogical and geochemical features of heavy concentrates from eight gold-bearing tributaries of the Anmandykan 2nd Creek in Khabarovsk krai: West otvilok, East otvilok, Somnitelny, Smezhny, Perevalny, Sobol, Vstrechny and Khvory. …”
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Spatiotemporal Variation Characteristics of Water Pollution and the Cause of Pollution Formation in a Heavily Polluted River in the Upper Hai River by Chunfang Meng, Xiaoyu Song, Kening Tian, Bingxiao Ye, Tianxiu Si

“…Data of 15 water quality parameters were analyzed during 1980–2018 at 19 monitoring sites in the mainstream and major tributaries of the Xinxiang Section of the Wei River (XSWR). …”
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Ectoparasites in Ornamental Shrimps Neocaridina denticulata and Neocaridina palmata from Purbalingga Fish Market Aquariums by Srimurni Kusmintarsih Endang, Hassan Alsheikh Mahmoud Hanan, Husein Sastranegara Moh., Syakuri Hamdan, Nuryanto Agus

“…The Neocaridina genus is one of the atyidae families that inhabit lakes, tributaries, ponds, rivers, and streams. Two species of Neocaridina have become popular in the Indonesian aquarium, namely N. denticulata and N. palmata. …”
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