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Artículos de revistas sobre el tema "River discharges"

Autor: Grafiati

Publicado: 25 de mayo de 2024

Última modificación: 31 de julio de 2025

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1

Klink, F. J. "An Alternative Approach to Achieve a Clean River Meuse." Water Science and Technology 29, no. 3 (1994): 121–23. http://dx.doi.org/10.2166/wst.1994.0079.

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The municipality of Rotterdam and two regional drinking-water companies jointly started an action programme in an attempt to reduce the sources of pollution in consultation with the dischargers. Rotterdam aims to reach written agreements with each relevant discharger in which the discharger is committed to reduce his discharge in order to improve the Meuse water quality. In exchange Rotterdam relinquishes legal claims upon the discharger. Results of the measured discharges are presented. The 8 major dischargers of Br, Cd, NH4 and P each contribute up to 79% of the total contaminant discharge i

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2

Brilly, M., K. Kavčič, M. Šraj, S. Rusjan, and A. Vidmar. "Climate change impact on flood hazard." Proceedings of the International Association of Hydrological Sciences 364 (September 16, 2014): 164–70. http://dx.doi.org/10.5194/piahs-364-164-2014.

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Abstract. Climate changes have a high impact on river discharges and therefore on floods. There are a few different methods we can use to predict discharge changes in the future. In this paper we used the complex HBV model for the Vipava River and simple correlation between discharge and precipitation data for the Soča River. The discharge prediction is based on the E-OBS precipitation data for three future time periods (2011–2040, 2041–2070 and 2071–2100). Estimated discharges for those three future periods are presented for both rivers. But a special situation occurs at the confluence where

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3

Ponomarev, Evgenii I., Tatiana V. Ponomareva, and Anatoly S. Prokushkin. "Intraseasonal Dynamics of River Discharge and Burned Forest Areas in Siberia." Water 11, no. 6 (2019): 1146. http://dx.doi.org/10.3390/w11061146.

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This study demonstrates the dependence between the forest burning rates and abnormal decrease in Siberian river discharges under the conditions of the permafrost zone. Our study area is in Central Siberia and Eastern Siberia/Yakutia. Four rivers (Podkamennaya Tunguska, Lower Tunguska, Aldan, and Viluy) were selected for the study. We analyzed the long-term and seasonal variation of river discharges (archive of The Global Runoff Data Centre for 1939–2015) together with the forest burning dynamics within the river basins (archive of Sukachev Institute of Forest for 1996–2015). We compared the di

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4

Lou, Hezhen, Pengfei Wang, Shengtian Yang, et al. "Combining and Comparing an Unmanned Aerial Vehicle and Multiple Remote Sensing Satellites to Calculate Long-Term River Discharge in an Ungauged Water Source Region on the Tibetan Plateau." Remote Sensing 12, no. 13 (2020): 2155. http://dx.doi.org/10.3390/rs12132155.

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Research into global water resources is challenged by the lack of ground-based hydrometric stations and limited data sharing. It is difficult to collect good quality, long-term information about river discharges in ungauged regions. Herein, an approach was developed to determine the river discharges of 24 rivers in ungauged regions on the Tibetan Plateau on a long-term scale. This method involved coupling the Manning–Strickler formula, and data from an unmanned aerial vehicle (UAV) and the Gaofen-2, SPOT-5, and Sentinel-2 satellites. We also compared the discharges calculated by using the thre

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5

Timuhins, Andrejs, Valērijs Rodinovs, and Māris Kļaviņš. "Wavelet analysis of the Baltic region river runoff longh-term trends and fluctuations." Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. 64, no. 5-6 (2010): 229–35. http://dx.doi.org/10.2478/v10046-011-0009-1.

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Wavelet analysis of the Baltic region river runoff longh-term trends and fluctuations The study of changes in river discharge and flood regime can provide important information on climate change and its impacts. Wavelet analysis offers new possibilities to study changes of river discharge patterns in regard to periodical processes on a background of climate change. In this study wavelet analysis was used to study long-term changes of river discharge in the Baltic region. Periodic oscillations of discharge intensity, and low- and high-water flow years are common for the major rivers in the East

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6

Shi, Xiaoqing, Tianling Qin, Hanjiang Nie, Baisha Weng, and Shan He. "Changes in Major Global River Discharges Directed into the Ocean." International Journal of Environmental Research and Public Health 16, no. 8 (2019): 1469. http://dx.doi.org/10.3390/ijerph16081469.

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Under the influence of global climate change, the discharges of major global rivers directed into the ocean have undergone significant changes. To study the trends and causes in discharge variation, we selected 40 large rivers and analyzed their annual discharges near their estuaries from 1960 to 2010. The method of runoff variation attribution analysis based on the Budyko hypothesis for large-scale basins was developed, in which influencing factors of human activities and glacial melting factors were added to the formula. The contribution rate of climate factors and human activities to change

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7

Chen, Y. C. "Flood discharge measurement of mountain rivers." Hydrology and Earth System Sciences Discussions 9, no. 11 (2012): 12655–90. http://dx.doi.org/10.5194/hessd-9-12655-2012.

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Abstract. An efficient method that accounts for personal safety, accuracy and reliability for measuring flood discharge of mountain rivers is proposed. It is composed of new measurement method, tools, and techniques. Measuring flood discharge from mountain rivers by using conventional method is costly, time-consuming, and dangerous. Thus previous discharge measurements for mountainous areas were typically based on estimated precipitation, which alone cannot generate accurate measurements. This study applies a novel flood discharge measurement system composed of an Acoustic Doppler Profiler and

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8

He, Li. "Estimation of Flood Travel Time in River Network of the Middle Yellow River, China." Water 12, no. 6 (2020): 1550. http://dx.doi.org/10.3390/w12061550.

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The flood travel time (FTT) along the Longmen-Tongguan Reach, part of the stem channel of the Middle Yellow River, is shorter than 30 h, and estimating the FTT of different discharges propagating from Wubu Hydrology Station to Tongguan Hydrology Station is necessary. However, the propagation of floods in this river network, the main channel of the Wubu-Tongguan Reach and related tributaries, has rarely been analyzed due to the lack of geometry data. Thus, a one-dimensional (1D) dynamic model was selected to simulate the FTT along the WT reach. Firstly, the 1986 flood event was selected to cali

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9

Wrzesiński, Dariusz, and Leszek Sobkowiak. "Detection of changes in flow regime of rivers in Poland." Journal of Hydrology and Hydromechanics 66, no. 1 (2018): 55–64. http://dx.doi.org/10.1515/johh-2017-0045.

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Abstract The aim of this study is to detect changes in flow regime of rivers in Poland. On the basis of daily discharges recorded in 1951-2010 at 159 gauging stations located on 94 rivers regularities in the variability of the river flow characteristics in the multi-year period and in the annual cycle were identified and also their spatial uniformity was examined. In order to identify changes in the characteristics of river regime, similarities of empirical distribution functions of the 5-day sets (pentads) of discharges were analyzed and the percent shares of similar and dissimilar distributi

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10

Cai, Mingyong, Jixi Gao, Xuanmei Fan, Sihan Liu, Wenming Shen, and Chaoyang He. "Estimation of River Discharge Using Unmanned Aerial Vehicle (UAV) Based on Manning Formula for an Ungauged Alpine River in the Eastern Qilian Mountains." Water 14, no. 13 (2022): 2100. http://dx.doi.org/10.3390/w14132100.

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River discharge is crucial to water resources development and ecological protection. However, in some arid areas of northwest China, it is still difficult to measure discharge accurately. In this study, unmanned aerial vehicle (UAV) imagery has been used to estimate river discharge at two river sections in the upper reaches of the Shiyang River in the eastern part of the Qilian Mountains based on the Manning formula. The estimated discharges at those two sections are 1.16 m3/s and 3.11 m3/s, respectively. Taking the discharges measured by an acoustic Doppler current profiler (ADCP) as the refe

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11

Akhmedova, N. R., and V. A. Naumov. "Comparison of the minimum discharge of the Instruch river at the beginning of the 20th and 21st century." IOP Conference Series: Earth and Environmental Science 1229, no. 1 (2023): 012028. http://dx.doi.org/10.1088/1755-1315/1229/1/012028.

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Abstract The hydrological series of the minimum annual discharges of the Instruch River (hydrological gauging station Ulyanovo, Kaliningrad region) was studied. The values of the minimum discharge rates were processed in the Mathcad environment. The characteristics of the minimum discharges (average and minimum annual, minimum 5-, 10- and 30-day discharges) of the Instruch River in 1901-1912 and 2008-2020 are determined. A comparative analysis of the characteristics of the minimum annual discharges of the river Instruch for the indicated periods.

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12

Milanović Pešić, Ana, Dejana Jakovljević, Golub Ćulafić, and Milovan Milivojević. "Water regime variability of selected rivers on the Balkan peninsula: a comparative study of central Serbia and northern region of Montenegro." GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 17, no. 4 (2025): 35–43. https://doi.org/10.24057/2071-9388-2024-3404.

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River discharge and its variations are often the subject of research from different aspects. This study aims to examine the discharge variability of selected rivers in central Serbia and the northern part of Montenegro, which belong to the Danube River basin (Black Sea Drainage basin). In general, all these rivers have uneven water regimes, a large share of evaporation in the water balance during the year, and very low values in discharges in the summer. In this regard, an analysis of mean annual and monthly discharge changes in ten hydrological stations from nine rivers in the 1961–2020 perio

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13

Nickles, Cassandra, and Edward Beighley. "Leveraging River Network Topology and Regionalization to Expand SWOT-Derived River Discharge Time Series in the Mississippi River Basin." Remote Sensing 13, no. 8 (2021): 1590. http://dx.doi.org/10.3390/rs13081590.

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The upcoming Surface Water and Ocean Topography (SWOT) mission will measure rivers wider than 50–100 m using a 21-day orbit, providing river reach derived discharges that can inform applications like flood forecasting and large-scale hydrologic modelling. However, these discharges will not be uniform in time or coincident with those of neighboring reaches. It is often assumed discharge upstream and downstream of a river location are highly correlated in natural conditions and can be transferred using a scaling factor like the drainage area ratio between locations. Here, the applicability of th

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14

Xu, H., R. G. Taylor, and Y. Xu. "Quantifying uncertainty in the impacts of climate change on river discharge in sub-catchments of the Yangtze and Yellow River Basins, China." Hydrology and Earth System Sciences 15, no. 1 (2011): 333–44. http://dx.doi.org/10.5194/hess-15-333-2011.

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Abstract. Quantitative evaluations of the impacts of climate change on water resources are primarily constrained by uncertainty in climate projections from GCMs. In this study we assess uncertainty in the impacts of climate change on river discharge in two catchments of the Yangtze and Yellow River Basins that feature contrasting climate regimes (humid and semi-arid). Specifically we quantify uncertainty associated with GCM structure from a subset of CMIP3 AR4 GCMs (HadCM3, HadGEM1, CCSM3.0, IPSL, ECHAM5, CSIRO, CGCM3.1), SRES emissions scenarios (A1B, A2, B1, B2) and prescribed increases in g

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15

Xu, H., R. G. Taylor, and Y. Xu. "Quantifying uncertainty in the impacts of climate change on river discharge in sub-catchments of the River Yangtze and Yellow Basins, China." Hydrology and Earth System Sciences Discussions 7, no. 5 (2010): 6823–50. http://dx.doi.org/10.5194/hessd-7-6823-2010.

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Abstract. Quantitative evaluations of the impacts of climate change on water resources are primarily constrained by uncertainty in climate projections from GCMs. In this study we assess uncertainty in the impacts of climate change on river discharge in two catchments of the River Yangtze and Yellow Basins that feature contrasting climate regimes (humid and semi-arid). Specifically we quantify uncertainty associated with GCM structure from a subset of CMIP3 AR4 GCMs (HadCM3, HadGEM1, CCSM3.0, IPSL, ECHAM5, CSIRO, CGCM3.1), SRES emissions scenarios (A1B, A2, B1, B2) and prescribed increases in g

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16

Cahoon, Lawrence B. "El Niño–Southern Oscillation Effects on River Flows in the Lower Cape Fear River Watershed, North Carolina." Journal of North Carolina Academy of Science 128, no. 3-4 (2012): 74–80. http://dx.doi.org/10.7572/2167-5880-128.3.74.

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Abstract Well-known responses of regional precipitation in the southeastern United States to variation in the state of the El Niño-Southern Oscillation (ENSO) can yield similar regional responses of river discharge. Effects of ENSO on gaged river flows were examined in the lower Cape Fear River basin in southeastern North Carolina. Linear regression of monthly flows against sea surface temperatures (SST) in Niño Region 1 + 2 in the eastern equatorial Pacific identified significant effects of SST on flows, in several winter and spring months in the Black, Northeast Cape Fear, and main stem Cape

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17

Fortunato, Tatiana Candeia da Silva, Antônio Sergio Ferreira Mendonça, and José Antônio Tosta dos Reis. "Optimization Technique for Analyzing the Allocation of Point Sources of Effluents in Rivers Based on the Principle of Equity Between Discharges." Revista de Gestão Social e Ambiental 19, no. 7 (2025): e012814. https://doi.org/10.24857/rgsa.v19n7-035.

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Objective: The objective of this study is to present a methodological alternative for analyzing the optimal allocation of point sources of wastewater discharges into rivers, in order to meet the principle of equity regarding the treatment efficiency levels required for such discharges. Theoretical Framework: The theoretical framework is based on the combined application of water quality models, optimization techniques, self-purification processes, and wastewater discharge management. Method: The methodology adopted combines optimization techniques using a Genetic Algorithm with the QUAL-UFMG w

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18

Whitehead, Paul Geoffrey, Zineb Mimouni, Daniel Butterfield, et al. "A New Multibranch Model for Metals in River Systems: Impacts and Control of Tannery Wastes in Bangladesh." Sustainability 13, no. 6 (2021): 3556. http://dx.doi.org/10.3390/su13063556.

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A new multibranch Integrated Catchment (INCA) model INCA-Metals has been developed to simulate the impact of tannery discharges on river systems. The model accounts for the key chemical reaction kinetic processes operating as well as sedimentation, resuspension, dilution, mixing and redistribution of pollutants in rivers downstream of tannery discharge points and for mine discharges or acid rock drainage sites. The model is dynamic and simulates the daily behaviour of hydrology and eight metals, including cadmium, mercury, copper, zinc, lead, arsenic, manganese and chromium, as well as cyanide

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19

Zou, Shan, Abuduwaili Jilili, Weili Duan, Philippe Maeyer, and Tim de Voorde. "Human and Natural Impacts on the Water Resources in the Syr Darya River Basin, Central Asia." Sustainability 11, no. 11 (2019): 3084. http://dx.doi.org/10.3390/su11113084.

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Water resources are increasingly under stress in Central Asia because downstream countries are highly dependent on upstream countries. Water is essential for irrigation and is becoming scarcer due to climate change and human activities. Based on 20 hydrological stations, this study firstly analyzed the annual and seasonal spatial–temporal changes of the river discharges, precipitation, and temperature in the Syr Darya River Basin and then the possible relationships between these factors were detected. Finally, the potential reasons for the river discharge variations have been discussed. The re

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20

Mancy, Khalil H. "The Control of Pollution from River Discharges in the Mediterranean." Water Science and Technology 18, no. 9 (1986): 229–42. http://dx.doi.org/10.2166/wst.1986.0094.

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The pollution burden of river discharges in the Mediterranean far exceeds all other sources, e.g. land based sources. The main contributors are the Rhone, Po and Ebro. Contributions from the River Nile are expected to be much less than those from rivers in the European continent. Recent Nile management schemes and irrigation projects in Egypt are posing direct impacts on the Mediterranean. This includes the erosion of the Nile Delta and off-shore pollution due to wastewater discharges. In view of the prevailing circulation patterns in the Mediterranean, these impacts are dominant in the South

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21

Paprotny, Dominik, and Oswaldo Morales-Nápoles. "Estimating extreme river discharges in Europe through a Bayesian network." Hydrology and Earth System Sciences 21, no. 6 (2017): 2615–36. http://dx.doi.org/10.5194/hess-21-2615-2017.

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Abstract. Large-scale hydrological modelling of flood hazards requires adequate extreme discharge data. In practise, models based on physics are applied alongside those utilizing only statistical analysis. The former require enormous computational power, while the latter are mostly limited in accuracy and spatial coverage. In this paper we introduce an alternate, statistical approach based on Bayesian networks (BNs), a graphical model for dependent random variables. We use a non-parametric BN to describe the joint distribution of extreme discharges in European rivers and variables representing

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22

Hasrudin, La Ode, Irwan Lakawa, Catrin Sudardjat, and Sufrianto Sufrianto. "Analysis of Langkolome River Flood, Wambona Village, Muna Regency (Case Study: Langkolome River, Wambona Village, Muna Regency)." Sultra Civil Engineering Journal 4, no. 1 (2023): 31–42. http://dx.doi.org/10.54297/sciej.v4i1.460.

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Rivers are natural channels on the surface of the earth to drain water, apart from that, of course, interactions between discharges, other factors such as human activities along rivers give different characteristics of river formation. the largest portion comes from land clearing activities around the Langkolome river body located in Wambona Village, South Wakorumba District, Muna Regency. Based on the results of the calculation of the flood discharge of the Langkolome River in Wambona Village from 10 years of rainfall data, namely Q10 = 128,773 m3/sec, Q25 = 244,067 m3/sec. The capacity of th

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23

Overeem, Irina, Benjamin Hudson, Ethan Welty, et al. "River inundation suggests ice-sheet runoff retention." Journal of Glaciology 61, no. 228 (2015): 776–88. http://dx.doi.org/10.3189/2015jog15j012.

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AbstractThe Greenland ice sheet is experiencing dramatic melt that is likely to continue with rapid Arctic warming. However, the proportion of meltwater stored before reaching the global ocean remains difficult to quantify. We use NASA MODIS surface reflectance data to estimate river discharge from two West Greenland rivers – the Watson River near Kangerlussuaq and the Naujat Kuat River near Nuuk – over the summers of 2000–12. By comparison with in situ river discharge observations, ‘inundation–discharge’ relations were constructed for both rivers. MODIS-based total annual discharges agree wel

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24

Phan, Thi Thanh Hang, Kengo Sunada, Satoru Oishi, and Yasushi Sakamoto. "River discharge in the Kone River basin (Central Vietnam) under climate change by applying the BTOPMC distributed hydrological model." Journal of Water and Climate Change 1, no. 4 (2010): 269–79. http://dx.doi.org/10.2166/wcc.2010.046.

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The impact of climate change on local discharge variability is investigated in the Kone River basin located in Central Vietnam. In this study, historical and predicted river discharge trends are discussed. The predicted discharge is simulated using the BTOPMC model based on the A1B scenario as a scientific basis for socioeconomic development and integrated water resource management in the Kone River basin, during the period 2011–2034. During the period 1979–2007, annual discharge in the Kone River basin trended upwards slightly. However, both maximum and minimum discharges declined. The result

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25

Gaidukova, Ekaterina, Vagif Mirzoev, Rafael Lukas, and Natalia Victorova. "On the issue of forecasting the runoff of mountain rivers in Uzbekistan." E3S Web of Conferences 510 (2024): 03026. http://dx.doi.org/10.1051/e3sconf/202451003026.

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The article discusses the possibility of using dynamic models in the form of first- and second-order differential equations for forecasting water discharges in rivers of Uzbekistan. The models were tested on two small mountain catchments, which differ in the conditions for the formation of river runoff. Verification forecasts of average daily water discharges for five years are made. It was found that water discharges of the Akdarya River are predicted effectively with a daily lead time using both a first-order model and a second-order model. The listed models do not give satisfactory results

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26

Mmonwuba, N. C., Anaduaka Mmaduabuchi, Ohamadike Azubuike, Nweke Nzube Theophilus, and Chioke Chukwuemelie. "The Effect of Industrial Waste Effluent on Waterquality: A Case Study of Otamiri River, Owerri, Imo State." Journal of Engineering Research and Reports 24, no. 4 (2023): 15–25. http://dx.doi.org/10.9734/jerr/2023/v24i4810.

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The study assessed the impact of effluent discharges on the quality of Otamiri River in Imo state, Nigeria. Six water samples were collected at discharge points where the industries discharge their effluents and abattoir. Samples that were collected upstream and downstream were analyzed in the field and in the lab using standard procedures. The source of pollution is attributable to industrial and abattoir activities whose effluent discharges impact the quality of Otamiri River. Therefore, without any treatments, the River cannot be used for any residential purposes in its current condition. I

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Souza Filho, EE. "Evaluation of the Upper Paraná River discharge controlled by reservoirs." Brazilian Journal of Biology 69, no. 2 suppl (2009): 707–16. http://dx.doi.org/10.1590/s1519-69842009000300024.

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The building of large dams in the Upper Paraná River basin altered the discharge regime at the Porto São José River section. The discharge regime has been altered since 1972, but the changes intensified after the Porto Primavera damming, in late 1998. Considering that discharge control affects the relationship between channel and floodplain, this work aimed to evaluate the intensity of the discharge control that resulted from the operation of the Porto Primavera Dam. To achieve this objective, statistical analyses were carried out based on the Porto São José Fluviometric Station historical ser

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Ushakov, M. V. "SIMULATION OF THE AUTUMN-WINTER RUNOFF OF THE ANADYR RIVER." Ecology. Economy. Informatics.System analysis and mathematical modeling of ecological and economic systems 1, no. 6 (2021): 63–65. http://dx.doi.org/10.23885/2500-395x-2021-1-6-63-65.

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. Runoff during the autumn-winter low-water period is of great importance in the life of river ecosystems. In this work, the goal is to construct a mathematical model of the curves of daily water discharge during the autumn-winter low-water period (September-April) on the Anadyr River near the village Snezhny (catchment area 106 000 km2 ). Anadyr River is the largest waterway of the Chukotka. The river is used by public utilities, river transport in summer and road transport in winter. Pacific salmon spawn in this river every year. The conditions for the survival of salmon eggs in winter are i

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Price, Amina E., Paul Humphries, Ben Gawne, and Martin C. Thoms. "Effects of discharge regulation on slackwater characteristics at multiple scales in a lowland river." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 2 (2013): 253–62. http://dx.doi.org/10.1139/cjfas-2012-0164.

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The spatial and temporal dynamics of physical habitat in rivers is driven by the interaction between channel morphology and discharge. However, little is known about how altered discharge affects the dynamics of habitat patches such as slackwaters. This study investigated the influence of discharge on the availability, stability, quality, and diversity of slackwaters in a southeastern Australian lowland river. The area, spatial configuration, permanence, and within-patch characteristics of slackwaters of two reaches in a regulated section and two reaches in a largely unregulated section of the

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Kuznietsov, P. M., and O. O. Biedunkova. "Study of temperature impact of discharges and balance of biogenic elements in the water of the Styr river in the impact zone of the Rivne NPP." Nuclear Power and the Environment 28, no. 3 (2023): 49–58. http://dx.doi.org/10.31717/2311-8253.23.3.6.

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Regardless of the type of cooling cycle, all nuclear power plants (NPPs) have a cooling water discharge with residual heat energy. Significant volumes of water are circulated in the cooling system of an NPP, which is withdrawn and discharged into a natural water body, thus transferring heat from the power plant to the water body. Changes in the content and balance of biogenic substances in surface waters under the influence of water discharges from an NPP can be considered as important indicators of water and environmental reactions to heat emissions from an NPP. The study aims to determine th

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Banasik, Kazimierz, Ewa Kaznowska, Beata Letkiewicz, and Michał Wasilewicz. "ANALYSIS OF SELECTED HYDROLOGICAL CHARACTERISTICS OF TWO SMALL LOWLAND CATCHMENTS." Acta Scientiarum Polonorum Formatio Circumiectus 21, no. 1 (2022): 33–47. http://dx.doi.org/10.15576/asp.fc/2022.21.1.33.

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Aim of the study: i. Comparison of characteristic discharges (mean and mean of annual minimum, i.e. mean low discharge) of small lowland river between two periods (1963-1990 and 1991-2020) estimated on the base of field measurements. ii. Comparison of specific discharges of two small catchments of various size in the period 1991-2020. iii. Evaluation of local indirect methods for estimation of mean and mean low discharge applied for the two small catchments. Material and methods: Since 1962, hydrological investigations have been conducted in a small lowland catchment of the Zagożdżonka River.

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32

Gnjato, Slobodan, Tatjana Popov, Dragutin Adžić, Marko Ivanišević, Goran Trbić, and Davorin Bajić. "Influence of climate change on river discharges over the Sava River watershed in Bosnia and Herzegovina." Időjárás 125, no. 3 (2021): 449–62. http://dx.doi.org/10.28974/idojaras.2021.3.5.

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The paper examines changes in air temperature, precipitation, and river discharges on seasonal and annual scale over the Sava River watershed in Bosnia & Herzegovina during the period 1961–2016. Based upon data gathered from 11 meteorological stations and 3 hydrological stations, hydroclimatic variables trends were established by utilizing the nonparametric Mann-Kendall test and the nonparametric Sen’s slope estimator. The results show significant positive seasonal and annual trends (expect for autumn, during which upward trends were insignificant) in air temperature, whereas both positive

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33

Ngo-Duc, T., T. Oki, and S. Kanae. "A variable streamflow velocity method for global river routing model: model description and preliminary results." Hydrology and Earth System Sciences Discussions 4, no. 6 (2007): 4389–414. http://dx.doi.org/10.5194/hessd-4-4389-2007.

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Abstract. This paper presents an attempt of simulating daily fluctuations of river discharge at global scale. Total Runoff Integrating Pathways (TRIP) is a global river routing model which can help to isolate the river basins, inter-basin transport of water through river channels, as well as collect and route runoff to the river mouths for all the major rivers. In the previous version of TRIP (TRIP 1.0), a simple approach of constant river flow velocity is used. In general, that approach is sufficient to model mean long-term discharges. However, to model short-term fluctuations, more sophistic

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Osadchiev, Alexander, and Evgeniya Korshenko. "Small river plumes off the northeastern coast of the Black Sea under average climatic and flooding discharge conditions." Ocean Science 13, no. 3 (2017): 465–82. http://dx.doi.org/10.5194/os-13-465-2017.

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Abstract. This study focuses on the impact of discharges of small rivers on the delivery and fate of fluvial water and suspended matter at the northeastern part of the Black Sea under different local precipitation conditions. Several dozens of mountainous rivers flow into the sea at the study region, and most of them, except for several of the largest, have little annual runoff and affect adjacent coastal waters to a limited extent under average climatic conditions. However, the discharges of these small rivers are characterized by a quick response to precipitation events and can significantly

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Spanou, M., and D. Chen. "Integrated management of the Upper Mersey river basin using the SMILE object-oriented software system." Water Science and Technology 46, no. 6-7 (2002): 105–12. http://dx.doi.org/10.2166/wst.2002.0669.

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This paper presents the application of the object-oriented framework SMILE to the management of flows and water quality in the Upper Mersey river catchment. The design river flows are those exceeded for 95% of the time, and are estimated applying alternative methods. The influence of compensation reservoirs, surface-water abstractions, and continuous discharges on low river flows is quantified. The annual licensed abstraction volumes are further reviewed. The monitored river water quality is classified using the River Ecosystem scheme. The compliance of the sewage treatment works and trade eff

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Rasouli, Hafizullah, Rijan B. Kayastha, Bikas C. Bhattarai, Ahuti Shrestha, Hedayatullah Arian, and Richard Armstrong. "Estimation of Discharge From Upper Kabul River Basin, Afghanistan Using the Snowmelt Runoff Model." Journal of Hydrology and Meteorology 9, no. 1 (2016): 85–94. http://dx.doi.org/10.3126/jhm.v9i1.15584.

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In this study, we estimated discharge from Upper Kabul River basin in the Hindu Kush Mountain (Paghman range) in Afghanistan. The Upper Kabul River basin covers an area of 1633.8km2 with a maximum elevation of 4522 m and minimum elevation of 1877 m. The Kabul River is one of the main rivers in Afghanistan and sustains a significant flow of water in summer months due to the melting of snow. In this study, daily discharge from Upper Kabul River basin, west of Kabul basin, for 2009 and 2011 is estimated by using Snowmelt Runoff Model (SRM) (Version 1.12, 2009), originally developed my J. Martinec

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Fulton, John W., Isaac E. Anderson, C. L. Chiu, et al. "QCam: sUAS-Based Doppler Radar for Measuring River Discharge." Remote Sensing 12, no. 20 (2020): 3317. http://dx.doi.org/10.3390/rs12203317.

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The U.S. Geological Survey is actively investigating remote sensing of surface velocity and river discharge (discharge) from satellite-, high altitude-, small, unmanned aircraft systems- (sUAS or drone), and permanent (fixed) deployments. This initiative is important in ungaged basins and river reaches that lack the infrastructure to deploy conventional streamgaging equipment. By coupling alternative discharge algorithms with sensors capable of measuring surface velocity, streamgage networks can be established in regions where data collection was previously impractical or impossible. To differ

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Kurhanevych, L. P., and M. Z. Shipka. "GEOECOLOGICAL STATE OF THE FLOODPLAIN AND CHANNEL COMPLEX OF THE POLTVA RIVER BASIN (VISTULA RIVER BASIN REGION)." Hydrology, hydrochemistry and hydroecology, no. 1 (56) (2020): 64–70. http://dx.doi.org/10.17721/2306-5680.2020.1.7.

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In accordance with the water management zoning of the territory of Ukraine, the Poltva river basin belongs to the Vistula river basin region. The evaluation methodology of the channel and floodplain river complex state was proposed by Himko R. V. (2005). According to this methodology, the parameters (23 indicators), characterizing river state by points scale (5 quality classes), were defined. The research included three steps. During the preparatory stage cartographic materials were investigated and the coastal protection zones were highlighted. The fieldwork stage included: visual assessment

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Wen, Junbo, Mengdie Ju, Zichen Jia, et al. "A Computational Tool to Track Sewage Flow Discharge into Rivers Based on Coupled HEC-RAS and DREAM." Water 16, no. 1 (2023): 51. http://dx.doi.org/10.3390/w16010051.

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Worldwide abatement of untreated sewage discharge into surface water is a challenging task. Sewage discharging into surface waters has a detrimental impact on water quality. This paper presents a MATLAB (R2018b) framework designed to identify sewage flow discharges into rivers from an inverse problem-solving perspective. The computational tool integrates a hydrodynamic model using the Hydrologic Engineering Center’s River Analysis System (HEC-RAS 5.0.0) and an open-source toolbox for Differential Evolution Adaptive Metropolis (DREAM) as the inverse problem method. The proposed framework can ef

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Guiamel, Ismail Adal, and Han Soo Lee. "Watershed Modelling of the Mindanao River Basin in the Philippines Using the SWAT for Water Resource Management." Civil Engineering Journal 6, no. 4 (2020): 626–48. http://dx.doi.org/10.28991/cej-2020-03091496.

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This study aims to simulate the watershed of the Mindanao River Basin (MRB) to enhance water resource management for potential hydropower applications to meet the power demand in Mindanao with an average growth of 3.8% annually. The soil and water assessment tool (SWAT) model was used with inputs for geospatial datasets and weather records at four meteorological stations from DOST-PAGASA. To overcome the lack of precipitation data in the MRB, the precipitation records were investigated by comparing the records with the global gridded precipitation datasets from the NCDC-CPC and the GPCC. Then,

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Orešić, Danijel, Valentina Curman, and Vedran Majcen. "Discharge regimes of the Bregana and Breganica rivers in Croatia." Hrvatski geografski glasnik/Croatian Geographical Bulletin 86, no. 1 (2024): 5–38. http://dx.doi.org/10.21861/hgg.2024.86.01.01.

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The Bregana River is the 16.5 km long main right tributary of the Sava River on the border of Croatia and Slovenia. There are two hydrological stations on the Bregana River and one more on its main tributary, the Breganica River. The Bregana River drainage basin is mostly hilly and mountainous, sparsely populated, wooded, and humid, with a relatively developed stream network. The annual discharge change and the characteristics of the discharge regimes were analysed on the three hydrological stations between 1981 and 2020. No trend was recognised in mean annual discharges, but all three station

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Wu, Xinyu, Xuyue Hu, and Xiang Zhang. "Experimental Study on Neck Cutoff in Meandering River under Variable Discharges." Water 15, no. 5 (2023): 841. http://dx.doi.org/10.3390/w15050841.

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Neck cutoff is a sudden phenomenon that occurs during the evolution of meandering rivers, but its process and mechanism remain unclear. In this investigation, the neck-narrowing process before cutoff, the formation of a new river, and the appropriate conditions for cutoff under constant and variable discharges were studied using experimental methods in a laboratory flume. The results indicated that bank erosion upstream and downstream of the neck was the main factor that triggered cutoff, regardless of whether the discharge changed. The sinuosity of the model river was approximately 7, the rat

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Świeca, Andrzej, Waldemar Kociuba, and Teresa Brzezińska-Wójcik. "Hydroclimatic and Geological Conditions of the Variability of Fluvial Transport Rate in the Upper Part of the Wieprz River Catchment." Quaestiones Geographicae 34, no. 1 (2015): 5–14. http://dx.doi.org/10.1515/quageo-2015-0001.

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Abstract The article summarises the results of observations conducted in the periods 1989-1992, 1998-2000, and 2001- 2003 in the catchment of the Roztocze section of the Wieprz River with an area of 404 km2. The presented results of the study on fluvial transport document the response of an upland river to variable hydro-climatic conditions. Fluvial transport rate in periods extreme in hydrological terms was compared. In the conditions of low water stages (1989- 1992) and mean annual discharges lower than the mean multiannual by 19%, the Wieprz River discharged an average of 13300 tonnes of so

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Trošelj, Joško, Han Soo Lee, and Lena Hobohm. "Enhancing a Real-Time Flash Flood Predictive Accuracy Approach for the Development of Early Warning Systems: Hydrological Ensemble Hindcasts and Parameterizations." Sustainability 15, no. 18 (2023): 13897. http://dx.doi.org/10.3390/su151813897.

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This study marks a significant step toward the future development of river discharges forecasted in real time for flash flood early warning system (EWS) disaster prevention frameworks in the Chugoku region of Japan, and presumably worldwide. To reduce the disaster impacts with EWSs, accurate integrated hydrometeorological real-time models for predicting extreme river water levels and discharges are needed, but they are not satisfactorily accurate due to large uncertainties. This study evaluates two calibration methods with 7 and 5 parameters using the hydrological Cell Distributed Runoff Model

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Kazem, Fatima H., Jaafar S. Maatooq, and Mohammed S. Wahad. "Evaluation of Hydraulic Structures for Agricultural Discharge Optimization." Civil Engineering Journal 10, no. 5 (2024): 1513–24. http://dx.doi.org/10.28991/cej-2024-010-05-010.

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The objective of the research was to evaluate the hydraulic structures on the Al-Gharraf River in southern Iraq and their ability to achieve the required discharge for agricultural areas that depend on them. Al-Gharraf head regulator discharges unstable volumes of water, ranging from 280 m3/s in winter to 100 m3/s in summer. The research aimed to determine whether the operational discharges are achievable for the offtakes branching from the Al-Gharraf River when the river's discharge ranges from 60% to 100% of the operational discharge. The researchers utilized a simulation of the irrigation c

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Martic-Bursac, Natasa, Ljiljana Stricevic, Milena Nikolic, and Radomir Ivanovic. "Statistical analysis of average, high and low waters of the Toplica River." Glasnik Srpskog geografskog drustva 96, no. 1 (2016): 26–45. http://dx.doi.org/10.2298/gsgd1601026m.

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The river Toplica springs on the east slopes of Kopaonik. It is the biggest left tributary of the Juzna Morava, in which it empties at the town of Korvingrad. It is 130 km long and the surface of its river-basin amounts to 2180 km?. This study estimates the probability of average, minimum and maximum discharge occurrence on the hydrological profile Pepeljevac on the Toplica River in the period 1951-2014. Pearson type III distribution was used for quantifying average, minimum and maximum annual discharge. Results of the study point out to significant fluctuations in the river Toplica discharge

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Сидорчук, А. Ю., О. К. Борисова, and А. В. Панин. "PALEOHYDROLOGY OF RIVERS IN THE DON RIVER BASIN." Гидросфера. Опасные процессы и явления 2, no. 5 (2024): 172–90. http://dx.doi.org/10.34753/hs.2023.5.2.172.

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На основе морфометрии палеорусел реконструирован гидрологический режим крупных меандрирующих рек, существовавших в бассейне реки Дон 18–14 тыс. лет назад. Для палеогидрологических реконструкций применялся метод морфометрических зависимостей, полученных на основе гидравлической геометрии речных русел – связи между шириной русла и средним максимальным расходом воды и отношения между максимальным расходом половодья и площадью водосбора. Реконструированные палеовеличины максимального суточного слоя поверхностного стока в период снеготаяния составили на севере бассейна р. Дон, в перигляциальной лес

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Jardine, C. G. "Public Evaluation of Fish Tainting from Pulp and Paper Mill Discharges." Water Science and Technology 25, no. 2 (1992): 57–64. http://dx.doi.org/10.2166/wst.1992.0035.

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As part of the Remedial Action Plan (RAP) programs for the St. Lawrence and Spanish Rivers in Ontario, Canada, tainting evaluations were conducted using members of the Public Advisory Committees (PACs) and the RAP teams. Triangle test sensory evaluations were conducted on caged rainbow trout (Salmo gairdneri) exposed insitu upstream and downstream of the pulp and paper mill diffuser outfalls In the St. Lawrence River only, evaluations were conducted on indigenous yellow perch (Perca flavescens) caught upstream and downstream of the mill discharge . In both locations, the odour of the flesh fro

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Petrovszki, J., G. Timár, and G. Molnár. "Is sinuosity a function of slope and bankfull discharge? – A case study of the meandering rivers in the Pannonian Basin." Hydrology and Earth System Sciences Discussions 11, no. 11 (2014): 12271–90. http://dx.doi.org/10.5194/hessd-11-12271-2014.

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Abstract. Pre-regulation channel sinuosities of the meandering rivers of the Pannonian Basin are analysed in order to define a mathematical model to estimate the influence of the bankfull discharge and the channel slope on them. As a primary database, data triplets of slope, discharge and sinuosity values were extracted from historical and modern datasets and pre-regulation historical topographic maps. Channel slope values were systematically modified to estimate figures valid before the river regulation works. The bankfull discharges were estimated from the average discharges using a robust y

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Roy, Suvendu, and Biswaranjan Mistri. "Estimation of Peak Flood Discharge for an Ungauged River: A Case Study of the Kunur River, West Bengal." Geography Journal 2013 (December 28, 2013): 1–11. http://dx.doi.org/10.1155/2013/214140.

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Due to unavailability of sufficient discharge data for many rivers, hydrologists have used indirect methods for deriving flood discharge amount, that is, application of channel geometry and hydrological models, for the estimation of peak discharge in the selected ungauged river basin(s) in their research/project works. This paper has studied the estimation of peak flood discharge of the Kunur River Basin, a major tributary of the Ajay River in the lower Gangetic plain. To achieve this objective, field measurements, GIS technique, and several channel geometry equations are adopted. Three import

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