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Journal articles on the topic 'Small rivers'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Zhukov, Ivan A., and Denis N. Aybulatov. "Changes in the annual runoff module of small rivers in the Russian part of the Ural River basin." Water Sector of Russia: Problems, Technologies, Management 2025, no. 2 (2025): 72–89. https://doi.org/10.35567/19994508-2025-2-72-89.

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Relevance. Currently, the main studies of the runoff modulus and the dynamics of its changes are conducted mainly on medium and large rivers of the Russian part of the Ural River basin, while the study of the runoff modulus of small rivers in this basin is extremely poor. Given the increasing deterioration of the ecological state of rivers, which primarily affects the annual water runoff modulus on small rivers, the study of the processes of runoff modulus formation, its variability and intra-annual changes are becoming the most important task of hydrology. Methods. The study is based on a com

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Khan, Makidul Islam, Tanjila Akter Nipa, Habiba Moshfeka, Aparna Barman, and Md Monirul Islam. "Ichthyodiversity of a small coastal river in Bangladesh." Dhaka University Journal of Biological Sciences 32, no. 1 (2023): 1–10. http://dx.doi.org/10.3329/dujbs.v32i1.64185.

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Small rivers are often ignored in terms of conservation actions and biodiversity management in Bangladesh. Despite having significant ecological and economic importance of these rivers, there is limited study done so far. To partially fulfill this gap, this study aimed to assess the fish and shellfish biodiversity of a small coastal river named Tiakhali from southern Bangladesh. A total of 26 finfish and 7 shellfish species were identified where 50% of finfish and all of the shellfish species were from the order Perciformes and Decapoda, respectively. Results showed that 76.9% of finfish and a

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3

Jeleapov, Ana. "Water protection zones and riparian buffers within the Northern Development Region of the Republic of Moldova." Akademos, no. 4(75) (January 2025): 63–70. https://doi.org/10.52673/18570461.24.4-75.06.

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The present research is dedicated to the delimitation of water protection zones and riparian buffers for the protection of the river banks and reservoirs built on their course within the boundaries of the Northern Development Region of the Republic of Moldova. The assessment of the spatial distribution of these areas was carried out on the basis of national legislation using geoinformational techniques. The total area of the protection zones was calculated at 2767 km2. Referring to the river type, about 14.7% of the delimited area is estimated for large rivers, 16.2% for medium rivers, 12.6% f

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4

Woo, Ming-ko, and Richard Heron. "Breakup of small rivers in the subarctic." Canadian Journal of Earth Sciences 24, no. 4 (1987): 784–95. http://dx.doi.org/10.1139/e87-076.

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At the end of the winter, the channels of small, subarctic rivers in the coastal James Bay Lowland are filled with snow, river ice, and icing. The major processes associated with the breakup of these rivers include the melting of the snow cover and the resultant generation of meltwater, the impoundment of meltwater runoff by snow dams, the disintegration and ablation of the river ice cover, the formation and dissipation of ice jams, and an exchange of overland and channelled flow between the rivers and their adjacent wetlands. A generalization of the breakup sequences allows a qualitative pred

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Berliguzhin, M. T., and E. H. Zhaksylykov. "Geochemical state of small rivers of Syrym District of West Kazakhstan region (on the example of the Rivers Buldyrty, Yesenankaty, Shiderty, Olenty)." Bulletin of the Karaganda University “Biology medicine geography Series” 11529, no. 3 (2024): 143–49. http://dx.doi.org/10.31489/2024bmg3/143-149.

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Despite the fact that small rivers are called Small, their importance in terms of ecology is high. This is because the condition of large rivers will depend on smaller rivers. The degradation of small rivers negatively affects the state, is an important and urgent task. The purpose of the study was to geochemically analyze the composition of the waters of small rivers in the Syryms district and assess their quality. Water samples were taken from each river ecological state of medium and large rivers, because they feed at the expense of these small rivers. It is easy to see that every day the w

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Dombrovskiy, K. O., and A. F. Rylsky. "Micro- and macrofauna of benthic invertebrates of the estuary section of the Mokra Moskovka, a small river in the City of Zaporizhzhia." Ukrainian hydrometeorological journal, no. 29 (July 21, 2022): 85–94. http://dx.doi.org/10.31481/uhmj.29.2022.07.

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Nowadays, in the period of scientific and technological progress, the anthropogenic impact on the environment keeps increasing. At the same time, its forms and its degree are very diverse. The study of aquatic ecosystems, including ecosystems of small rivers, is one of the applied environmental researches. Small rivers form water resources, hydrochemical composition and water quality of medium and large rivers. They form natural landscapes and contribute to human economic activities. Most of the indicators classify the current environmental state of small and medium rivers of Zaporizhzhi

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Shesterkin, V. P., and N. M. Shesterkina. "MINERALIZATION OF SMALL RIVERS WATER IN THE AMUR REGION." Regional problems 24, no. 2-3 (2021): 52–55. http://dx.doi.org/10.31433/2618-9593-2021-24-2-3-52-55.

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The authors have considered mineralization of small rivers water in the Russian part of the Amur basin. The lowest values are observed in water of the rivers, draining intrusions; the highest ones – in the rivers of the areas with ore occurrences and deposits of polymetals, karst development and mineral water outlets. The maximum salinity is characteristic of the river waters in the urbanized territories.

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8

Semeniuk, M., N. Demchuk, and M. Kozyn. "MULTIDISCIPLINARY APPROACH TO THE PROBLEM OF SMALL RIVERS PROTECTION IN ZHYTOMYR POLISSYA." Ukrainian Journal of Natural Sciences, no. 2 (January 28, 2023): 69–84. http://dx.doi.org/10.35433/naturaljournal.2.2023.69-84.

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The article is devoted to the study of the complex problems of the preservation of small rivers. Three main aspects of the environmental impact associated with them are considered: disruption of the water balance, reduction of water quality, and reduction of biotic and landscape diversity in the river valley. The study aims to characterize the main types of human impact on the small rivers of Zhytomyr Polissia. To achieve the goal, the following tasks were set: determine the main types of anthropogenic impact on small rivers of Zhytomyr Polissia; to determine the direct and indirect consequenc

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9

Zhukov, I. A., and D. N. Aibulatov. "Trends of changes in water regime of small rivers in the Volga river basin during the period of instrumental observations." Lomonosov Geography Journal 79, no. 6, 2024 (2024): 81–90. https://doi.org/10.55959/msu0579-9414.5.79.6.7.

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Currently, the qualitative and quantitative hydrological characteristics and the dynamics of their changes are studied mainly for medium and large rivers. The hydrological characteristics of small rivers in Russia are poorly investigated. Considering the increasing deterioration of the ecological state of rivers, affecting primarily the intra-annual water flow distribution of small rivers, the study of flow formation processes, its variability and intra-annual changes is becoming the most important task of hydrology. The article examines changes in the indicators of the intra-annual distributi

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10

Cai, Yaxi, Xiaodong Yang, and Binhua Zhao. "Analysis of Forecast and Early Warning of Flood in Medium and Small Rivers." Journal of Electronic Research and Application 7, no. 1 (2023): 10–15. http://dx.doi.org/10.26689/jera.v7i1.4890.

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Flooding of small and medium rivers is caused by environmental factors like rainfall and soil loosening. With the development and application of technologies such as the Internet of Things and big data, the disaster supervision and management of large river basins in China has improved over the years. However, due to the frequent floods in small and medium-sized rivers in our country, the current prediction and early warning of small and medium-sized rivers is not accurate enough; it is difficult to realize real-time monitoring of small and medium-sized rivers, and it is also impossible to obt

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11

Lee, Jeongha, and Seokhwan Hwang. "Water Level Prediction of Small and Medium-Sized Rivers Using Artificial Neural Networks." Journal of the Korean Society of Hazard Mitigation 22, no. 2 (2022): 61–68. http://dx.doi.org/10.9798/kosham.2022.22.2.61.

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Typhoons and rainy seasons are typically a frequent occurrence in Korea’s summer climate (June to August); however, the frequency of local heavy rains has increased in recent years owing to climate change. These heavy rains are characterized by substantial rainfall within a short period of time, causing flash flooding. This in turn causes the water level of small and medium-sized rivers with a narrow river channel to increase rapidly, resulting in considerable damage. The rainfall-runoff model is a physical model that is used to predict the river level of most large rivers according to rainfal

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12

Perkhach, O., and D. Rypych. "Ecological-geographic aspects of water consumption and guard of waters in river basin of Luga in the Volyn area." Visnyk of the Lviv University. Series Geography, no. 45 (May 20, 2014): 210–16. http://dx.doi.org/10.30970/vgg.2014.45.1167.

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The concept of small rivers and their natural, economic and ecologo-geographical contents is examined. The works of that kind problematic in this region are analyzed. The aspects of water consumption and guard of waters are investigated in a river basin of Luga, tributary of West Bug in the south-west Volyn area. Measures of effective guard and renovation of small rivers are offered. In text is placed the work out cartographical model. Key words: small rivers, river basin, water consumption, guard of waters.

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13

Bandurin, M. A., I. A. Prikhodko, I. P. Bandurina, and A. A. Rudenko. "Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers." IOP Conference Series: Earth and Environmental Science 988, no. 4 (2022): 042044. http://dx.doi.org/10.1088/1755-1315/988/4/042044.

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Abstract The peculiarity of small rivers is the dependence of erosion-accumulative processes in their beds on the intensity of soil erosion in the catchment area: the smaller the river, the greater the contact with the catchment area of its channel, where mineral particles, washed off from its area, directly enter it. Soil erosion leads to the entry of an excessive amount of them into the channel of a small river, as a result of which sediment accumulation begins in it, siltation of the channel occurs. It leads to changes in the water regime of small rivers - a decrease in inter-soil runoff (u

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14

Pysanko, Yana, and Svitlana Madzhd. "Assessment of the ecological status of small rivers in urban areas." USEFUL online journal 2, no. 4 (2018): 56–62. http://dx.doi.org/10.32557/useful-2-4-2018-0006.

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Rivers are important components of many urban systems, and research into urban rivers are considerable research. The object of the research is technogenically transformed aquatic ecosystem of small rivers passing through urban areas of Kyiv city. These small rivers are tributaries of the Irpin River. The study used an ecosystem-basin approach, statistical processing of data. The complex research on patterns of their development for the long-term period were made, the quality class of water and indexes characteristic were ostended.

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15

Oliveira, Paula Caroline dos Reis, Marcos Gomes Nogueira, and Luciana Pinto Sartori. "Differential environmental impacts on small and medium size rivers from center of São Paulo State, Brazil, and regional management perspectives." Acta Limnologica Brasiliensia 26, no. 4 (2014): 404–19. http://dx.doi.org/10.1590/s2179-975x2014000400008.

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AIM: This study aimed to evaluate, comparatively, the influence of distinct environmental impacts in the watershed on the rivers Capivara, Lavapés, Araquá and Pardo and the transference of effects downstream. METHODS: The limnological/water quality study was carried out in rainy (March/2007) and dry (September/2007) seasons, considering 17 sampling stations. RESULTS: Variables such as channel width and depth, water velocity and temperature increased towards the river's mouth; water transparency, velocity and dissolved oxygen were higher in the upstream regions. Light penetration was total at m

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16

Grokhovska, Yulia, and Sergiy Konontsev. "WATER QUALITY OF SMALL RIVERS IN THE PRIPYAT BASIN: ENVIRONMENTAL AND FISHERY ASSESSMENT." WATER AND WATER PURIFICATION TECHNOLOGIES. SCIENTIFIC AND TECHNICAL NEWS 33, no. 2 (2022): 43–50. http://dx.doi.org/10.20535/2218-930022022263183.

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The study of anthropogenic causes of the deterioration of the state of small rivers is the first step towards their conservation and restoration, improving the human environment as a whole. The aim of the study is the fishery and environmental assessment of water quality of small rivers in the Pripyat River basin (the area of right-bank tributaries in the middle part of the river) within the Rivne region in the northern-west region of Ukraine. The initial data for the assessment have been the results of monitoring (27 physical and chemical indicators) during 2010–2018. The assessment by the in

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17

Kuznetsov, Evgeny, Anna Khadzhidi, Larisa Motornaya, Kharlampiy Kilidi, Maxim Filimonov, and Lyudmila Kravchenko. "Method of restorating water level of small rivers." E3S Web of Conferences 273 (2021): 05007. http://dx.doi.org/10.1051/e3sconf/202127305007.

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The article presents method for restoring the water level of small rivers that are subjected to degradation on the example of section of the Meklet River. To assess the degradation of rivers, there is proposed method based on maintaining balance between bottom sediments removed from the riverbed and the water volume in the prism of coastal landscape flooding during high water. The methodology for calculating the amount of silt shifting can be used to monitor the state of river beds. When forming coastline on inconvenient coastal landscapes as enclosing structures, the method allows the use of

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18

Liu, Jialin, Fangyan Cheng, Yi Zhu, Qun Zhang, Qing Song, and Xinhong Cui. "Urban Land-Use Type Influences Summertime Water Quality in Small- and Medium-Sized Urban Rivers: A Case Study in Shanghai, China." Land 11, no. 4 (2022): 511. http://dx.doi.org/10.3390/land11040511.

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(1) Background: Small- and medium-sized rivers in urban areas are unique environments that serve as blue-green corridors for urban residents. The relationship between land-use types and water quality in these rivers provides important information for effectively addressing urban river restoration and pollution management. However, not much attention has been paid on these small- and medium-sized rivers, especially in large urban agglomerations with dense river networks. (2) Methods: This study undertook a field investigation on 130 sampling small- and medium-sized rivers during the late summer

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19

Vizer, L. S., M. A. Dorogin, and Yu V. Sharukha. "Zooplankton of small lowland rivers in the south of Western Siberia." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 1 (January 20, 2025): 18–28. https://doi.org/10.33920/sel-09-2501-02.

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In July 2022, the species composition of zooplankton was studied in seven small plain rivers of the Ob basin in the south of Western Siberia: Elbash, Chernaya, Nizhny Suzun, Upper Suzun, Pashenka, Bolshoy Barlak, Kirza, Chaus. 51 zooplankton species from three systematic groups were identified in the rivers: rotifers — 20 (39%), branched crustaceans — 23 (45%), oar-footed crustaceans — 8 (16%). The most common species of rotifers are A. priodonta and K. quadrata, branched crustaceans — D.longispina, C. reticulata, A. affinis, S. mucronata, C. sphaericus, paddlefoot crayfish — C. strenuus. Orga

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20

Zhukov, I. A., and D. N. Aybulatov. "Water regime specifics in the upper Sviyaga River and its tributaries upon karst development." Geoèkologiâ, no. 3 (December 21, 2024): 11–21. https://doi.org/10.31857/s0869780924030028.

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At present, the hydrological characteristics of small rivers are understudied in Russia. Taking into account the increasing deterioration of the ecological state of surface watercourses, which primarily affects the intra-annual distribution of water runoff on small and medium-sized rivers, in particular, the study of runoff formation, its variability and intra-annual changes become the most important task of hydrology. The paper considers changes in the indicators of intra-annual distribution of river flow in the upper reaches of the Sviyaga River in the almost complete absence of knowledge of

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Sergeeva, Valentina M., Sergey A. Mosharov, Natalia A. Shulga, Viacheslav V. Kremenetskiy, Pavel V. Khlebopashev, and Dmitry N. Matorin. "Response of the Coastal Phytoplankton Community to the Runoff from Small Rivers in the Northeastern Black Sea." Diversity 15, no. 7 (2023): 857. http://dx.doi.org/10.3390/d15070857.

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River runoff is an important source of nutrients as well as suspended and dissolved organic matter that in coastal zones and on the shelf are transformed due to local production cycles. River runoff affects the hydrological regime, salinity, temperature, and irradiance in river–seawater mixing zone. Our study focuses on the response of phytoplankton to the impact of small Caucasian rivers in the Northeastern (NE) Black Sea, as one of the most sensitive components of marine ecosystems with respect to the changes in abiotic factors. The leading role of marine species of diatoms, dinoflagellates,

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22

Kobojek, Elżbieta. "Anthropogenic Transformation and the Possibility of Renaturalising Small Rivers and Their Valleys in Cities – Łódź and Lviv Examples." European Spatial Research and Policy 22, no. 1 (2015): 45–60. http://dx.doi.org/10.1515/esrp-2015-0016.

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Rivers used to serve important functions in the development of cities, and river valleys are a part of the urban space. Regardless of several centuries of anthropogenic influences large rivers and their valleys have remained the dominant elements of the cityscape. In the case of small rivers and valleys the situation has been different. The expansion of urban infrastructure often led to an elimination of rivers and their valleys from the developed area. In many cases rivers were directed down straightened concrete ditches and sometimes the locations of their channels were changed altogether. I

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Rumiantseva, E. V., O. V. Muzhdaba, I. I. Vasilevich, A. A. Piskun, and M. V. Tretiakov. "Water runoff of small rivers flowing into the Gulf of Ob’ and Taz Bay: current state of research." Arctic and Antarctic Research 69, no. 1 (2023): 72–90. http://dx.doi.org/10.30758/0555-2648-2023-69-1-72-90.

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Fresh water supply is a basic need of the gas and oil industry of the Yamal-Gydan region. Small rivers flowing into the Ob’ and Taz Bay could be used for solving this problem. The purpose of the study is to summarise the available research data on the runoff of small rivers and to calculate the catchment areas using GIS technologies. The study covers more than 200 small rivers in the catchment area of the Ob’ and Taz Bay. It is established that there have been no stationary observations of the water runoff on them. Expedition observations of water discharges of small rivers are summarized. Mor

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Itsukushima, Rei, Hiroaki Yoshikawa, and Kai Morita. "A dataset of molluscan fauna sampled in river estuaries of medium and small size river in Kyushu island, Japan." Biodiversity Data Journal 6 (July 11, 2018): e26101. http://dx.doi.org/10.3897/bdj.6.e26101.

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Many studies have evaluated the ecological integrity of large-scale estuaries of continental rivers using biotic indicators such as fish, phytoplankton and benthic communities. However, few studies have focused on the river estuaries of small and medium rivers. Molluscan fauna data in large estuaries or in the estuaries of large rivers have been collected by the The National Census on River Environments (conducted by the Ministry of Land, Infrastructure, Transport and Tourism) or National Survey on the Natural Environment (conducted by the Ministry of Environment). On the other hand, molluscan

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Itsukushima, Rei, Hiroaki Yoshikawa, and Kai Morita. "A dataset of molluscan fauna sampled in river estuaries of medium and small size river in Kyushu island, Japan." Biodiversity Data Journal 6 (July 11, 2018): e26101. https://doi.org/10.3897/BDJ.6.e26101.

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Many studies have evaluated the ecological integrity of large-scale estuaries of continental rivers using biotic indicators such as fish, phytoplankton and benthic communities. However, few studies have focused on the river estuaries of small and medium rivers. Molluscan fauna data in large estuaries or in the estuaries of large rivers have been collected by the The National Census on River Environments (conducted by the Ministry of Land, Infrastructure, Transport and Tourism) or National Survey on the Natural Environment (conducted by the Ministry of Environment). On the other hand, molluscan

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26

Khilchevskyi, V. K. "THE HYDROECOLOGICAL STATUS OF SMALL HISTORICAL RIVERS LYBED AND POCHAYNA IN THE BASIN OF THE DNIEPER AND VOLGA AT THE BEGINNING OF THE XXI CENTURY." Hydrology, hydrochemistry and hydroecology, no. 4 (55) (2019): 74–88. http://dx.doi.org/10.17721/2306-5680.2019.4.6.

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A survey study of the general hydroecological status of the historical small rivers of the same name Lybed and Pochayna, known since the Middle Ages (10th-11th centuries) in the Dnieper basin in Ukraine and in the Volga basin in the Russian Federation (RF), has been carried out. These rivers, many centuries ago, were natural objects around which cities formed, and in our time they turned out to be “absorbed” by cities. The state of six small rivers was analyzed: Lybed and Pochayna – tributaries of the Dnieper, Kiev, Ukraine; Lybed and Pochayna – Klyazma tributaries (Volga basin), Vladimir, Rus

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27

Miskevich, I. V., A. V. Leshchev, D. S. Moseev, and A. S. Lokhov. "Hydrological and hydrochemical research of the mouths of the small rivers flowing to the White sea in the winter low water season of 2019." Океанология 59, no. 6 (2019): 1089–92. http://dx.doi.org/10.31857/s0030-15745961089-1092.

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In the winter low water season in March and the first week of April 2019, complex hydrological and hydrochemical studies were carried out at the mouths of two small rivers of the White Sea catchment basin (the Mudyuga river, which flows into the Dvina Bay, and the Tamitsa river, which flows into the Onega Bay). The results indicate significant differences in the short-period variability of hydrological and hydrochemical parameters in the winter in the studied river mouths compared with the characteristics observed in the tidal estuaries of large and medium rivers, as well as in the mouths of s

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28

Stryjecki, Robert. "Polyhumic dystrophic rivers - an unique habitat for water mites (Acari, Hydrachnidia)?" Ecologica Montenegrina 27 (January 18, 2020): 58–68. http://dx.doi.org/10.37828/em.2020.27.7.

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Polyhumic dystrophic rivers are very rare in Poland and polyhumic rivers (both poly- and dystrophic) are weakly researched in general. The aim of the study was to present a detailed faunistic and ecological analysis of the water mites of polyhumic dystrophic rivers from Janów Forests Landscape Park (central-eastern Poland) and to compare the Hydrachnidia communities of those rivers with the Hydrachnidia of non-polyhumic rivers of this area. In small, fully polyhumic rivers Hydrachnidia fauna was poor in species and individuals, the populations of most species were very small and the characteri

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Rysin, I. I., I. I. Grigorev, L. N. Petukhova, and A. A. Perevoshchikov. "Long-term dynamics of velocities of horizontal channel erosions on the rivers of Udmurtia." Геоморфология и палеогеография 55, no. 1 (2024): 26–39. http://dx.doi.org/10.31857/s2949178924010033.

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The results of a study of channel displacement for 2000–2022 in 55 key areas located on rivers of different orders, draining across different landscapes of Udmurtia, are presented. The erosion rates were determined using benchmarks and tacheometric survey. To analyze the obtained results, the rivers were divided into 4 groups based on their order magnitude (according to the method of A. Scheidegger). Maximum erosion rate (up to 15 m/year) is typical for rivers of an order higher than 14, 6–8 m/year for medium rivers with an order of 9–14, 5.5 m/year for small rivers with an order of 6–9, and u

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30

Drozdenko, Tatiana V. "Planktonic algoflora of small rivers in urban conditions (on the example of the Mirozhka and Pskova rivers, Pskov, the Pskov Region)." Samara Journal of Science 12, no. 2 (2023): 30–34. http://dx.doi.org/10.55355/snv2023122104.

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The paper studies the planktonic algoflora of the Mirozhka and the Pskova Rivers. The research was carried out in the early autumn period of 2019. The taxonomic composition of the Mirozhka River included 107 species and intraspecific taxa of microalgae, the Pskova river 76 species taxa of algae from 7 phylums: Bacillariophyta, Cyanobacteria, Chlorophyta, Ochrophyta, Cryptophyta, Euglenozoa, Miozoa. The basis of the floral complex in both rivers were diatoms and green algae. The representatives of the Ochrophyta department also made a visible contribution to the species richness of the algoflor

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31

Bezgodova, O. V. "STRUCTURAL AND MORPHOMETRIC ANALYSIS OF THE SMALL RIVERS BASINS IN THE TUNKA SYSTEM." Bulletin of Udmurt University. Series Biology. Earth Sciences 32, no. 1 (2022): 31–41. http://dx.doi.org/10.35634/2412-9518-2022-32-1-31-41.

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The article provides a comparative analysis of the structural and morphometric features of the small river basins of the Tunka system on the example of the Ihe-Uhgun, Engarga, Tunka rivers (left tributaries of the Irkut river, Tunkinsky Golcy Ridge) and the rivers of the northern macroslope of the Khamar-Daban ridge (right tributaries of the Irkut river). Structural indices were obtained on the basis of the ALOS digital surface model (DSM) using GIS and compared with modal indicators to characterize the structural and morphometric features of the basins. The analysis of the indices distributio

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Gailiušis, Brunonas, Darius Jakimavičius, Diana Šarauskienė, and Aldona Jurgelėnaitė. "Assessment of hydrokinetic resources of small and medium-size rivers: the Lithuanian case." Baltica 30, no. 1 (2017): 23–30. http://dx.doi.org/10.5200/baltica.2017.30.03.

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The aim of the study is to assess hydrokinetic energy resources of small and medium-size rivers in Lithuania. The estimation of technical resources was carried out for river segments, where for average longterm runoff the flow velocity exceeded 0.4 m/s, and the average depth was more than 0.5 m. The results of hydrological studies were used to calculate the average flow rate and the relationship between flow velocity and river depth. The width and depth of the river channel was estimated in accordance with physical and geographical factors. Part of the favourable for use sites of rivers locate

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Lykov, I. N., and V. I. Melenchuk. "Environmental problems of small rivers in the Volga and Dneprovsky basin in the territory of the Kaluga region." IOP Conference Series: Earth and Environmental Science 981, no. 4 (2022): 042046. http://dx.doi.org/10.1088/1755-1315/981/4/042046.

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Abstract The article deals with the geoecological problems of small rivers of the Volga and Dnieper basins in the Kaluga region. The analysis of water resources of the Kaluga region is given. It is shown that intensive use of river runoff, transformation of natural landscapes, agromelioration and urbanization, anthropogenic and technogenic load have led to a violation of the hydrological regime of small rivers. This led to a change in the intra-annual distribution of runoff on the territory of the Kaluga Region and neighboring regions, stimulated the progressive process of shallowing and disap

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Vyšná, V., F. Dyer, W. Maher, and R. Norris. "Organic carbon reservoirs in five small rivers across a land-use gradient." Marine and Freshwater Research 66, no. 3 (2015): 233. http://dx.doi.org/10.1071/mf13142.

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Organic carbon (OC) inputs, stores and processing underpin river functioning. We examined patterns in OC reservoirs (total organic carbon, TOC), suspended OC, drifting coarse particulate OC (drift OC), organic debris and the biomass of in-stream primary producers in five geographically proximate small rivers in south-eastern Australia during base-flow conditions. Despite differences in the extent of land-use conversion (native forest-to-pasture) and geomorphology among all sites, we found greater within-river than ‘within-land-use’ similarities in OC reservoirs. Our predictions regarding the r

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Yadrenkina, E. N., A. V. Mishakin, E. N. Krylova, M. I. Koveshnikov, and V. V. Kirillov. "Small river’s ichtyofauna in the zone of quarry coal mining of Kuzbass (Western Siberia)." Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries), no. 12 (December 2023): 794–805. http://dx.doi.org/10.33920/sel-09-2312-02.

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The fish complex of the tributaries of the Upper Tom’ river (Nizhnyaya Tykhta and Talda), were studied. The surveyed rivers flow through the territory of the western part of the Kuznetsk Alatau (Tardanovsky Uplands). Against the background of a high level of oxygen in both rivers, in terms of the volume of easily oxidized organic matter, the N. Tykhta River is more polluted than the Talda River. Four species inhabit in the Talda River and 7 species were registered in Nizhnyaya Tykhta. Watercourses are characterized by low levels of species richness and abundance of fish. An uneven distribution

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Beidyk, O., and S. Syrovets. "TOURIST AND EXCURSION RESOURCES OF DESNIANSKIY RECREATIONAL ROUTE." Bulletin of Taras Shevchenko National University of Kyiv. Geography, no. 66-67 (2017): 29–37. http://dx.doi.org/10.17721/1728-2721.2017.66.3.

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Every year river cruises are becoming more common, as river corridors have strong potential for recreation and tourism: architectural, historical and natural attractions are concentrated on their banks and in the port cities. Nevertheless major rivers have a huge resource and recreational potential as compared to small and medium-sized rivers, their tourist-recreational “luggage” is remarkably more modest. At the same time historical and national patriotic significance of small rivers sometimes is not inferior to the potential of major rivers. It’s worth noting that it is the medium and small

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YERMAKOV, V., and S. SARNAVSKY. "FORMATION OF GEOGRAPHIC COMPETENCIES OF STUDENTS IN THE STUDY OF LAND WATER." ТHE SOURCES OF PEDAGOGICAL SKILLS, no. 32 (December 8, 2023): 118–24. http://dx.doi.org/10.33989/2075-146x.2023.32.292653.

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This publication shows the ways of forming students' geographical competences when studying the waters of the land with the use of a local history approach and the application of elements of research work. The important educational and ecological educational role of students' research work in the study of inland waters using the example of the network of local small rivers is clarified. The general scheme of the complex study of small rivers is presented with the main attention to its retrospective and geographical component, which can be implemented in extracurricular and group work. Th

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Liu, Boyi, Mingyang Tian, Kaimin Shih, Chun Ngai Chan, Xiankun Yang, and Lishan Ran. "Spatial and temporal variability of <i>p</i>CO<sub>2</sub> and CO<sub>2</sub> emissions from the Dong River in south China." Biogeosciences 18, no. 18 (2021): 5231–45. http://dx.doi.org/10.5194/bg-18-5231-2021.

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Abstract. CO2 efflux at the water–air interface is an essential component of the riverine carbon cycle. However, the lack of spatially resolved CO2 emission measurements prohibits reliable estimation of the global riverine CO2 emissions. By deploying floating chambers, seasonal changes in river water CO2 partial pressure (pCO2) and CO2 emissions from the Dong River in south China were investigated. Spatial and temporal patterns of pCO2 were mainly affected by terrestrial carbon inputs (i.e., organic and inorganic carbon) and in-stream metabolism, both of which varied due to different land cove

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Chen, Tongfeng, and Liang Xiao. "Application of RBF and GRNN Neural Network Model in River Ecological Security Assessment—Taking the Middle and Small Rivers in Suzhou City as an Example." Sustainability 15, no. 8 (2023): 6522. http://dx.doi.org/10.3390/su15086522.

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The analytic hierarchy process is used to construct the health evaluation index system and grading standard of small- and medium-sized rivers in the region. Based on the principles of RBF and GRNN neural network algorithms, the river health evaluation models of radial basis function neural network (RBF) and general regression neural network (GRNN) algorithms are constructed, respectively. The network training samples are constructed by the interpolation method. The standard value of river health classification evaluation is taken as the “prediction” sample to “predict”. Then the results are ap

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Sharifullin, Aidar G., Artyom V. Gusarov, Olga A. Lavrova, and Achim A. Beylich. "Channel Gradient as a Factor in the Distribution of Beaver Dams and Ponds on Small Rivers: A Case Study in the Northern Extremity of the Volga Upland, the East European Plain." Water 15, no. 13 (2023): 2491. http://dx.doi.org/10.3390/w15132491.

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A very noticeable increase in the beaver population (mainly the Eurasian beaver (Castor fiber L.)) in the East European Plain since the end of the 20th century through reintroduction contributed to the emergence of a large number of beaver dams and ponds, which resulted in the transformation of the channels and the hydrological regime of small rivers. In this paper, for the first time in the Middle Volga region, regularities in the distribution of beaver dams and ponds on small rivers were revealed based on a topographic survey of the river channel, regulated by beaver activity in recent decad

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Gusarov, Artyom V., Aidar G. Sharifullin, Achim A. Beylich, and Fedor N. Lisetskii. "Features of the Distribution of Beaver Dams and Ponds along Small Rivers: The Volga-Kama Region, European Russia." Hydrology 11, no. 4 (2024): 53. http://dx.doi.org/10.3390/hydrology11040053.

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In this paper, by using GNSS technologies, some features of the distribution and some morphometric parameters of dams and ponds created by the Eurasian beaver (Castor fiber L.) along ten rivers of the Volga-Kama region of European Russia were identified. Detected features depend on the geomorphological, lithological, and landscape features of these rivers and their basins. The significant role of river slopes, as well as landscape zoning, in the distribution of beaver dams and ponds along small rivers in the study region is shown. In the rivers under study, almost all beaver constructions are

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Liu, Zengmei, Yuting Cai, Shangwei Wang, Fupeng Lan, and Xushu Wu. "Small and Medium-Scale River Flood Controls in Highly Urbanized Areas: A Whole Region Perspective." Water 12, no. 1 (2020): 182. http://dx.doi.org/10.3390/w12010182.

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While rapid urbanization promotes social and economic development, it poses a serious threat to the health of rivers, especially the small and medium-scale rivers. Flood control for small and medium-scale rivers in highly urbanized areas is particularly important. The purpose of this study is to explore the most effective flood control strategy for small and medium-scale rivers in highly urbanized areas. MIKE 11 and MIKE 21 were coupled with MIKE FLOOD model to simulate flooding with the flood control standard, after which the best flooding control scheme was determined from a whole region per

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Liang, Xiangan, Wei Mao, Kang Yang, and Luyan Ji. "Automated Small River Mapping (ASRM) for the Qinghai-Tibet Plateau Based on Sentinel-2 Satellite Imagery and MERIT DEM." Remote Sensing 14, no. 19 (2022): 4693. http://dx.doi.org/10.3390/rs14194693.

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The dynamic variation in the water surfaces of the river networks within the Qinghai-Tibet Plateau affects the water resource availability for downstream ecosystems and human activities. Small rivers (with a river width less than 30 m) are an important component of this network, but are difficult to map in the Qinghai-Tibet Plateau. Firstly, the width of most rivers is very narrow, at around 20 m, which appears as only one or two pixels in Sentinel-2 images and thus is susceptible to salt-and-pepper noise. Secondly, local mountain shadows, cloud shadows, and snow pixels have spectral character

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Tsgoev, Mr F., and Valery Borisovich Big Boys. "ECOLOGICAL STATE OF SMALL RIVERS BY EXAMPLE RSO-ALANIA." National Association of Scientists 3, no. 31(58) (2020): 24–27. http://dx.doi.org/10.31618/nas.2413-5291.2020.3.58.284.

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The article deals with the impact of human economic activity on chemical pollution of small rivers of the RSO-Alania. Special attention is paid to the Kambileyevka river as the most polluted water body in the Republic. The analysis of discharges of pollutants from industrial wastewater and their negative impact on the hydrological regime of the water basin of this river is carried out.

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Khilchevskyi, V. K. "MODERN CHARACTERISTICS OF WATER BODIES IN UKRAINE: WATERCOURSES AND RESERVOIRS." Hydrology, hydrochemistry and hydroecology, no. 1 (59) (2021): 17–27. http://dx.doi.org/10.17721/2306-5680.2021.1.2.

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According to the assessment made in the article, the current data on the number of water bodies on the territory of Ukraine are: 63119 rivers; about 20 thousand lakes; 1054 reservoirs; 50793 ponds. There are rivers in Ukraine: large (> 50 thousand km2) – 8 rivers: Dnieper, Dniester, Danube, Desna, Pripyat, Southern Bug, Seversky Donets, Tisa; medium (2.0-50 thousand km2) – 82 rivers; small (<2.0 thousand km2) – 63,029 rivers (99.87%). There are lakes in Ukraine: very large (> 100 km2) – 1 lake: Yalpug; large (10-100 km2) – 21 lakes; medium (1-10 km2) – about 70; small (0.5-1.0 km2) an

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Kardos, Máté Krisztián, and Adrienne Clement. "Predicting small water courses’ physico-chemical status from watershed characteristics with two multivariate statistical methods." Open Geosciences 12, no. 1 (2020): 71–84. http://dx.doi.org/10.1515/geo-2020-0006.

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AbstractWatershed area and a bunch of relief, land use, and wastewater characteristics for 32 upland and 33 lowland small river courses are generated. Based on these characteristics, logistic binary regression models are trained to predict if the river achieves the good physico-chemical status, and discriminant analysis models are trained to predict the physico-chemical status class on a five-class scale.Univariate models revealed that elevation (for upland rivers), the share of artificial surfaces (for lowland rivers) along with forests, and wastewater quality variables such as biochemical ox

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Cai, Yaxi, and Xiaodong Yang. "Flood Risk Forecasting and Early Warning Technology for Medium and Small Rivers in the Yellow River Basin Induced by Heavy Rain." Journal of Electronic Research and Application 6, no. 5 (2022): 8–14. http://dx.doi.org/10.26689/jera.v6i5.4438.

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The Yellow River Basin is one of the important sand-producing and sediment-transporting areas in China, and one of the three most important sand-producing areas in the world. The amount of sand and dust days in the “Three Norths” (Dongbei, Xibei, and Huabei) area has increased, and regional sand and dust storms have occurred frequently. There are generally more serious hidden danger points of debris flow geological disasters in small and medium-sized river basins. The technical achievements of flood risk forecasting and early warning for medium and small rivers in the Yellow River Basin based

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Kyryliuk, Serhii. "The assessment algorithm for sustainable development goals in the Hukiv, Dereluy, and Vyzhenka river basin systems of Chernivtsi oblast." Present Environment and Sustainable Development 15, no. 2 (2021): 235–44. http://dx.doi.org/10.15551/pesd2021152019.

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The study deals with an integral assessment of hydromorphological and geoecological conditions of the Hukiv (flatland type of river), Dereluy (foothill type of river), and Vyzhenka (mountainous type of river) river basin systems (Figure 1). The indicators characterizing the river basin in the best way as a holistic system, the channel, floodplain, and watershed altogether, in natural reference conditions and in terms of human economic activity are addressed. The assessment hydromorphological test and geoecological monitoring of small rivers (SWOT-analysis) in accordance with the developed univ

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Anand, Mulk Raj, and Surendra Pratap Singh. "Box Type Minor Bridge on Small Rivers in Alluvial Region." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 008 (2024): 1–13. http://dx.doi.org/10.55041/ijsrem37047.

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Since time immemorial, humankind has been using various techniques to cross the rivers, streams or any depression without closing or obstructing the original flow through a structure called bridge. With the span of time and advancements in civil engineering, several types of bridges have come into existence like wooden, steel, masonry arches, RCC and pre stressed concrete bridges. Indian Roads Congress categorizes three types of the bridges on the basis of length i.e. culverts up to 6.0 m, minor bridges above 6.0 m to maximum 60.0 m length and major bridges above 60.0 m. In present scenario, m

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Shesterkin, V. P. "HYDROCHEMISTRY OF SMALL RIVERS NEAR THE TOWN OF VYAZEMSKY." Regional problems 26, no. 2 (2023): 80–83. http://dx.doi.org/10.31433/2618-9593-2023-26-2-80-83.

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The paper provides characteristics of small rivers water chemical composition in the Vyazemsky area. The assumption is made that river waters were polluted by biogenic and organic nutrients due to to the discharge of untreated domestic wastewater.

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